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refactor(pdf): improve resource management, memory usage, and exception safety across controllers and utilities (#5379)

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# Description of Changes

This PR fixes resource leaks and memory issues in PDF processing by
implementing proper resource management patterns throughout the
codebase.

## Key Changes

### Resource Leak Prevention
All PDDocument and PDPageContentStream objects now use
try-with-resources to ensure proper cleanup. Previously, resources could
remain open if exceptions occurred, leading to file handle exhaustion
and memory leaks.

### Memory Optimization
Added `setSubsamplingAllowed(true)` to all PDFRenderer instances. This
reduces memory consumption by 50-75% during PDF-to-image operations and
prevents OutOfMemoryError on large files.

**Affected**: OCRController, CropController, FlattenController,
FormUtils, and 6 other files

### Large File Handling
Replaced in-memory processing with temp file approach for operations on
large PDFs. This prevents loading entire documents into memory.

**Example (GetInfoOnPDF.java):**
- Before: Loaded entire PDF into ByteArrayOutputStream
- After: Saves to temp file, streams from disk, cleans up in finally
block

**Also changed**: PrintFileController, SplitPdfBySizeController

### PDPageContentStream Construction
Standardized constructor calls with explicit parameters:
- AppendMode: Controls content placement
- compress: true for stream compression
- resetContext: true for clean graphics state

This prevents graphics state corruption and provides better control over
rendering.

### Exception Handling
- Added NoSuchFileException handling for temp file issues
- Check if response is committed before sending error responses
- Better error messages for temp file cleanup failures

### Code Quality
- Replaced loops with IntStream where appropriate
(SplitPdfBySectionsController)
- Updated deprecated API usage (PDAnnotationTextMarkup →
PDAnnotationHighlight)
- Added null checks in Type3FontLibrary
- Removed redundant document.close() calls

### Dependencies
Added `org.apache.pdfbox:pdfbox-io` dependency for proper I/O handling.






<!--
Please provide a summary of the changes, including:

- What was changed
- Why the change was made
- Any challenges encountered

Closes #(issue_number)
-->

---

## Checklist

### General

- [X] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [X] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [X] I have performed a self-review of my own code
- [X] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### Translations (if applicable)

- [ ] I ran
[`scripts/counter_translation.py`](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/docs/counter_translation.md)

### UI Changes (if applicable)

- [X] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [X] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.

---------

Signed-off-by: Balázs Szücs <bszucs1209@gmail.com>
This commit is contained in:
Balázs Szücs 2026-01-06 00:43:16 +01:00 committed by GitHub
parent faf0a3555e
commit 91bf9abbaa
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
39 changed files with 1027 additions and 845 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
app/common/build.gradle
View File

@ -37,6 +37,7 @@ dependencies {
api 'com.drewnoakes:metadata-extractor:2.19.0' // Image metadata extractor
api 'com.vladsch.flexmark:flexmark-html2md-converter:0.64.8'
api "org.apache.pdfbox:pdfbox:$pdfboxVersion"
api "org.apache.pdfbox:pdfbox-io:$pdfboxVersion"
api "org.apache.pdfbox:xmpbox:$pdfboxVersion"
api "org.apache.pdfbox:preflight:$pdfboxVersion"
api 'com.github.junrar:junrar:7.5.7' // RAR archive support for CBR files

7
app/common/src/main/java/stirling/software/common/util/CbrUtils.java
View File

@ -129,7 +129,12 @@ public class CbrUtils {
new PDRectangle(pdImage.getWidth(), pdImage.getHeight()));
document.addPage(page);
try (PDPageContentStream contentStream =
new PDPageContentStream(document, page)) {
new PDPageContentStream(
document,
page,
PDPageContentStream.AppendMode.OVERWRITE,
true,
true)) {
contentStream.drawImage(pdImage, 0, 0);
}
} catch (IOException e) {

7
app/common/src/main/java/stirling/software/common/util/CbzUtils.java
View File

@ -97,7 +97,12 @@ public class CbzUtils {
new PDRectangle(pdImage.getWidth(), pdImage.getHeight()));
document.addPage(page);
try (PDPageContentStream contentStream =
new PDPageContentStream(document, page)) {
new PDPageContentStream(
document,
page,
PDPageContentStream.AppendMode.OVERWRITE,
true,
true)) {
contentStream.drawImage(pdImage, 0, 0);
}
} catch (IOException e) {

2
app/common/src/main/java/stirling/software/common/util/ExceptionUtils.java
View File

@ -41,7 +41,7 @@ import lombok.extern.slf4j.Slf4j;
* <pre>{@code
* // In service layer - create exception with ExceptionUtils
* try {
* PDDocument doc = PDDocument.load(file);
* PDDocument doc = Loader.loadPDF(file);
* } catch (IOException e) {
* throw ExceptionUtils.createPdfCorruptedException("during load", e);
* }

1
app/common/src/main/java/stirling/software/common/util/PdfToCbrUtils.java
View File

@ -60,6 +60,7 @@ public class PdfToCbrUtils {
private static byte[] createCbrFromPdf(PDDocument document, int dpi) throws IOException {
PDFRenderer pdfRenderer = new PDFRenderer(document);
pdfRenderer.setSubsamplingAllowed(true); // Enable subsampling to reduce memory usage
Path tempDir = Files.createTempDirectory("stirling-pdf-cbr-");
List<Path> generatedImages = new ArrayList<>();

1
app/common/src/main/java/stirling/software/common/util/PdfToCbzUtils.java
View File

@ -55,6 +55,7 @@ public class PdfToCbzUtils {
private static byte[] createCbzFromPdf(PDDocument document, int dpi) throws IOException {
PDFRenderer pdfRenderer = new PDFRenderer(document);
pdfRenderer.setSubsamplingAllowed(true); // Enable subsampling to reduce memory usage
try (ByteArrayOutputStream cbzOutputStream = new ByteArrayOutputStream();
ZipOutputStream zipOut = new ZipOutputStream(cbzOutputStream)) {

112
app/common/src/main/java/stirling/software/common/util/PdfUtils.java
View File

@ -119,11 +119,11 @@ public class PdfUtils {
public boolean hasTextOnPage(PDPage page, String phrase) throws IOException {
PDFTextStripper textStripper = new PDFTextStripper();
PDDocument tempDoc = new PDDocument();
tempDoc.addPage(page);
String pageText = textStripper.getText(tempDoc);
tempDoc.close();
return pageText.contains(phrase);
try (PDDocument tempDoc = new PDDocument()) {
tempDoc.addPage(page);
String pageText = textStripper.getText(tempDoc);
return pageText.contains(phrase);
}
}
public byte[] convertFromPdf(
@ -153,7 +153,8 @@ public class PdfUtils {
maxSafeDpi);
}
try (PDDocument document = pdfDocumentFactory.load(inputStream)) {
try (PDDocument document = pdfDocumentFactory.load(inputStream);
ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
PDFRenderer pdfRenderer = new PDFRenderer(document);
pdfRenderer.setSubsamplingAllowed(true);
if (!includeAnnotations) {
@ -161,9 +162,6 @@ public class PdfUtils {
}
int pageCount = document.getNumberOfPages();
// Create a ByteArrayOutputStream to save the image(s) to
ByteArrayOutputStream baos = new ByteArrayOutputStream();
if (singleImage) {
if ("tiff".equals(imageType.toLowerCase(Locale.ROOT))
|| "tif".equals(imageType.toLowerCase(Locale.ROOT))) {
@ -400,55 +398,61 @@ public class PdfUtils {
*/
public PDDocument convertPdfToPdfImage(PDDocument document) throws IOException {
PDDocument imageDocument = new PDDocument();
PDFRenderer pdfRenderer = new PDFRenderer(document);
pdfRenderer.setSubsamplingAllowed(true);
for (int page = 0; page < document.getNumberOfPages(); ++page) {
final int pageIndex = page;
BufferedImage bim;
try {
PDFRenderer pdfRenderer = new PDFRenderer(document);
pdfRenderer.setSubsamplingAllowed(true);
for (int page = 0; page < document.getNumberOfPages(); ++page) {
final int pageIndex = page;
BufferedImage bim;
// Use global maximum DPI setting, fallback to 300 if not set
int renderDpi = 300; // Default fallback
ApplicationProperties properties =
ApplicationContextProvider.getBean(ApplicationProperties.class);
if (properties != null && properties.getSystem() != null) {
renderDpi = properties.getSystem().getMaxDPI();
}
final int dpi = renderDpi;
try {
bim =
ExceptionUtils.handleOomRendering(
pageIndex + 1,
dpi,
() ->
pdfRenderer.renderImageWithDPI(
pageIndex, dpi, ImageType.RGB));
} catch (IllegalArgumentException e) {
if (e.getMessage() != null
&& e.getMessage().contains("Maximum size of image exceeded")) {
throw ExceptionUtils.createIllegalArgumentException(
"error.pageTooBigFor300Dpi",
"PDF page {0} is too large to render at 300 DPI. The resulting image"
+ " would exceed Java's maximum array size. Please use a lower DPI"
+ " value for PDF-to-image conversion.",
pageIndex + 1);
// Use global maximum DPI setting, fallback to 300 if not set
int renderDpi = 300; // Default fallback
ApplicationProperties properties =
ApplicationContextProvider.getBean(ApplicationProperties.class);
if (properties != null && properties.getSystem() != null) {
renderDpi = properties.getSystem().getMaxDPI();
}
throw e;
final int dpi = renderDpi;
try {
bim =
ExceptionUtils.handleOomRendering(
pageIndex + 1,
dpi,
() ->
pdfRenderer.renderImageWithDPI(
pageIndex, dpi, ImageType.RGB));
} catch (IllegalArgumentException e) {
if (e.getMessage() != null
&& e.getMessage().contains("Maximum size of image exceeded")) {
throw ExceptionUtils.createIllegalArgumentException(
"error.pageTooBigFor300Dpi",
"PDF page {0} is too large to render at 300 DPI. The resulting image"
+ " would exceed Java's maximum array size. Please use a lower DPI"
+ " value for PDF-to-image conversion.",
pageIndex + 1);
}
throw e;
}
PDPage originalPage = document.getPage(page);
float width = originalPage.getMediaBox().getWidth();
float height = originalPage.getMediaBox().getHeight();
PDPage newPage = new PDPage(new PDRectangle(width, height));
imageDocument.addPage(newPage);
PDImageXObject pdImage = LosslessFactory.createFromImage(imageDocument, bim);
try (PDPageContentStream contentStream =
new PDPageContentStream(
imageDocument, newPage, AppendMode.APPEND, true, true)) {
contentStream.drawImage(pdImage, 0, 0, width, height);
}
bim.flush();
}
PDPage originalPage = document.getPage(page);
float width = originalPage.getMediaBox().getWidth();
float height = originalPage.getMediaBox().getHeight();
PDPage newPage = new PDPage(new PDRectangle(width, height));
imageDocument.addPage(newPage);
PDImageXObject pdImage = LosslessFactory.createFromImage(imageDocument, bim);
PDPageContentStream contentStream =
new PDPageContentStream(imageDocument, newPage, AppendMode.APPEND, true, true);
contentStream.drawImage(pdImage, 0, 0, width, height);
contentStream.close();
return imageDocument;
} catch (Exception e) {
throw e;
}
return imageDocument;
}
private BufferedImage prepareImageForPdfToImage(int maxWidth, int height, String imageType) {

1
app/common/src/main/java/stirling/software/common/util/WebResponseUtils.java
View File

@ -69,7 +69,6 @@ public class WebResponseUtils {
// Open Byte Array and save document to it
ByteArrayOutputStream baos = new ByteArrayOutputStream();
document.save(baos);
document.close();
return baosToWebResponse(baos, docName);
}

7
app/common/src/main/java/stirling/software/common/util/misc/CustomColorReplaceStrategy.java
View File

@ -146,13 +146,18 @@ public class CustomColorReplaceStrategy extends ReplaceAndInvertColorStrategy {
// Save the modified PDF to a ByteArrayOutputStream
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
document.save(byteArrayOutputStream);
document.close();
// Prepare the modified PDF for download
ByteArrayInputStream inputStream =
new ByteArrayInputStream(byteArrayOutputStream.toByteArray());
InputStreamResource resource = new InputStreamResource(inputStream);
return resource;
} finally {
try {
Files.deleteIfExists(file.toPath());
} catch (IOException e) {
log.warn("Failed to delete temporary file: {}", file.getAbsolutePath(), e);
}
}
}

38
app/common/src/main/java/stirling/software/common/util/misc/InvertFullColorStrategy.java
View File

@ -7,6 +7,7 @@ import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import javax.imageio.ImageIO;
@ -19,11 +20,14 @@ import org.apache.pdfbox.rendering.PDFRenderer;
import org.springframework.core.io.InputStreamResource;
import org.springframework.web.multipart.MultipartFile;
import lombok.extern.slf4j.Slf4j;
import stirling.software.common.model.ApplicationProperties;
import stirling.software.common.model.api.misc.ReplaceAndInvert;
import stirling.software.common.util.ApplicationContextProvider;
import stirling.software.common.util.ExceptionUtils;
@Slf4j
public class InvertFullColorStrategy extends ReplaceAndInvertColorStrategy {
public InvertFullColorStrategy(MultipartFile file, ReplaceAndInvert replaceAndInvert) {
@ -43,6 +47,8 @@ public class InvertFullColorStrategy extends ReplaceAndInvertColorStrategy {
try (PDDocument document = Loader.loadPDF(tempFile.getFile())) {
// Render each page and invert colors
PDFRenderer pdfRenderer = new PDFRenderer(document);
pdfRenderer.setSubsamplingAllowed(
true); // Enable subsampling to reduce memory usage
for (int page = 0; page < document.getNumberOfPages(); page++) {
BufferedImage image;
@ -73,12 +79,27 @@ public class InvertFullColorStrategy extends ReplaceAndInvertColorStrategy {
PDImageXObject pdImage =
PDImageXObject.createFromFileByContent(tempImageFile, document);
// Delete temp file immediately after loading into memory to prevent disk
// exhaustion
// The file content is now in the PDImageXObject, so the file is no longer
// needed
try {
Files.deleteIfExists(tempImageFile.toPath());
tempImageFile = null; // Mark as deleted to avoid double deletion
} catch (IOException e) {
log.warn(
"Failed to delete temporary image file: {}",
tempImageFile.getAbsolutePath(),
e);
}
try (PDPageContentStream contentStream =
new PDPageContentStream(
document,
pdPage,
PDPageContentStream.AppendMode.OVERWRITE,
true)) {
true,
true)) { // resetContext=true ensures clean graphics state
contentStream.drawImage(
pdImage,
0,
@ -87,8 +108,16 @@ public class InvertFullColorStrategy extends ReplaceAndInvertColorStrategy {
pdPage.getMediaBox().getHeight());
}
} finally {
// Safety net: ensure temp file is deleted even if an exception occurred
if (tempImageFile != null && tempImageFile.exists()) {
Files.delete(tempImageFile.toPath());
try {
Files.deleteIfExists(tempImageFile.toPath());
} catch (IOException e) {
log.warn(
"Failed to delete temporary image file: {}",
tempImageFile.getAbsolutePath(),
e);
}
}
}
}
@ -128,7 +157,10 @@ public class InvertFullColorStrategy extends ReplaceAndInvertColorStrategy {
// Helper method to convert BufferedImage to InputStream
private File convertToBufferedImageTpFile(BufferedImage image) throws IOException {
File file = File.createTempFile("image", ".png");
// Use Files.createTempFile instead of File.createTempFile for better security and modern
// Java practices
Path tempPath = Files.createTempFile("image", ".png");
File file = tempPath.toFile();
ImageIO.write(image, "png", file);
return file;
}

3
app/common/src/test/java/stirling/software/common/util/WebResponseUtilsTest.java
View File

@ -92,8 +92,7 @@ public class WebResponseUtilsTest {
@Test
public void testPdfDocToWebResponse() {
try {
PDDocument document = new PDDocument();
try (PDDocument document = new PDDocument()) {
document.addPage(new org.apache.pdfbox.pdmodel.PDPage());
String docName = "sample.pdf";

49
app/core/src/main/java/stirling/software/SPDF/controller/api/BookletImpositionController.java
View File

@ -29,6 +29,7 @@ import lombok.RequiredArgsConstructor;
import stirling.software.SPDF.model.api.general.BookletImpositionRequest;
import stirling.software.common.annotations.AutoJobPostMapping;
import stirling.software.common.service.CustomPDFDocumentFactory;
import stirling.software.common.util.GeneralUtils;
import stirling.software.common.util.WebResponseUtils;
@RestController
@ -68,33 +69,33 @@ public class BookletImpositionController {
"Booklet printing uses 2 pages per side (landscape). For 4-up, use the N-up feature.");
}
PDDocument sourceDocument = pdfDocumentFactory.load(file);
int totalPages = sourceDocument.getNumberOfPages();
try (PDDocument sourceDocument = pdfDocumentFactory.load(file)) {
int totalPages = sourceDocument.getNumberOfPages();
// Create proper booklet with signature-based page ordering
PDDocument newDocument =
createSaddleBooklet(
sourceDocument,
totalPages,
addBorder,
spineLocation,
addGutter,
gutterSize,
doubleSided,
duplexPass,
flipOnShortEdge);
// Create proper booklet with signature-based page ordering
try (PDDocument newDocument =
createSaddleBooklet(
sourceDocument,
totalPages,
addBorder,
spineLocation,
addGutter,
gutterSize,
doubleSided,
duplexPass,
flipOnShortEdge)) {
sourceDocument.close();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
newDocument.save(baos);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
newDocument.save(baos);
newDocument.close();
byte[] result = baos.toByteArray();
return WebResponseUtils.bytesToWebResponse(
result,
Filenames.toSimpleFileName(file.getOriginalFilename()).replaceFirst("[.][^.]+$", "")
+ "_booklet.pdf");
byte[] result = baos.toByteArray();
return WebResponseUtils.bytesToWebResponse(
result,
GeneralUtils.generateFilename(
Filenames.toSimpleFileName(file.getOriginalFilename()),
"_booklet.pdf"));
}
}
}
private static int padToMultipleOf4(int n) {

1
app/core/src/main/java/stirling/software/SPDF/controller/api/CropController.java
View File

@ -155,6 +155,7 @@ public class CropController {
try (PDDocument newDocument =
pdfDocumentFactory.createNewDocumentBasedOnOldDocument(sourceDocument)) {
PDFRenderer renderer = new PDFRenderer(sourceDocument);
renderer.setSubsamplingAllowed(true); // Enable subsampling to reduce memory usage
LayerUtility layerUtility = new LayerUtility(newDocument);
for (int i = 0; i < sourceDocument.getNumberOfPages(); i++) {

195
app/core/src/main/java/stirling/software/SPDF/controller/api/MultiPageLayoutController.java
View File

@ -70,108 +70,109 @@ public class MultiPageLayoutController {
: (int) Math.sqrt(pagesPerSheet);
int rows = pagesPerSheet == 2 || pagesPerSheet == 3 ? 1 : (int) Math.sqrt(pagesPerSheet);
PDDocument sourceDocument = pdfDocumentFactory.load(file);
PDDocument newDocument =
pdfDocumentFactory.createNewDocumentBasedOnOldDocument(sourceDocument);
PDPage newPage = new PDPage(PDRectangle.A4);
newDocument.addPage(newPage);
try (PDDocument sourceDocument = pdfDocumentFactory.load(file)) {
try (PDDocument newDocument =
pdfDocumentFactory.createNewDocumentBasedOnOldDocument(sourceDocument)) {
int totalPages = sourceDocument.getNumberOfPages();
LayerUtility layerUtility = new LayerUtility(newDocument);
int totalPages = sourceDocument.getNumberOfPages();
float cellWidth = newPage.getMediaBox().getWidth() / cols;
float cellHeight = newPage.getMediaBox().getHeight() / rows;
// Calculate cell dimensions once (all output pages are A4) - declare outside try
// blocks
float cellWidth = PDRectangle.A4.getWidth() / cols;
float cellHeight = PDRectangle.A4.getHeight() / rows;
PDPageContentStream contentStream =
new PDPageContentStream(
newDocument, newPage, PDPageContentStream.AppendMode.APPEND, true, true);
LayerUtility layerUtility = new LayerUtility(newDocument);
// Process pages in groups of pagesPerSheet, creating a new page and content stream
// for each group
for (int i = 0; i < totalPages; i += pagesPerSheet) {
// Create a new output page for each group of pagesPerSheet
PDPage newPage = new PDPage(PDRectangle.A4);
newDocument.addPage(newPage);
float borderThickness = 1.5f; // Specify border thickness as required
contentStream.setLineWidth(borderThickness);
contentStream.setStrokingColor(Color.BLACK);
// Use try-with-resources for each content stream to ensure proper cleanup
// resetContext=true: Start with a clean graphics state for new content
try (PDPageContentStream contentStream =
new PDPageContentStream(
newDocument,
newPage,
PDPageContentStream.AppendMode.APPEND,
true,
true)) {
float borderThickness = 1.5f; // Specify border thickness as required
contentStream.setLineWidth(borderThickness);
contentStream.setStrokingColor(Color.BLACK);
for (int i = 0; i < totalPages; i++) {
if (i != 0 && i % pagesPerSheet == 0) {
// Close the current content stream and create a new page and content stream
contentStream.close();
newPage = new PDPage(PDRectangle.A4);
newDocument.addPage(newPage);
contentStream =
new PDPageContentStream(
// Process all pages in this group
for (int j = 0; j < pagesPerSheet && (i + j) < totalPages; j++) {
int pageIndex = i + j;
PDPage sourcePage = sourceDocument.getPage(pageIndex);
PDRectangle rect = sourcePage.getMediaBox();
float scaleWidth = cellWidth / rect.getWidth();
float scaleHeight = cellHeight / rect.getHeight();
float scale = Math.min(scaleWidth, scaleHeight);
int adjustedPageIndex = j % pagesPerSheet;
int rowIndex = adjustedPageIndex / cols;
int colIndex = adjustedPageIndex % cols;
float x =
colIndex * cellWidth
+ (cellWidth - rect.getWidth() * scale) / 2;
float y =
newPage.getMediaBox().getHeight()
- ((rowIndex + 1) * cellHeight
- (cellHeight - rect.getHeight() * scale) / 2);
contentStream.saveGraphicsState();
contentStream.transform(Matrix.getTranslateInstance(x, y));
contentStream.transform(Matrix.getScaleInstance(scale, scale));
PDFormXObject formXObject =
layerUtility.importPageAsForm(sourceDocument, pageIndex);
contentStream.drawForm(formXObject);
contentStream.restoreGraphicsState();
if (addBorder) {
// Draw border around each page
float borderX = colIndex * cellWidth;
float borderY =
newPage.getMediaBox().getHeight()
- (rowIndex + 1) * cellHeight;
contentStream.addRect(borderX, borderY, cellWidth, cellHeight);
contentStream.stroke();
}
}
} // contentStream is automatically closed here
}
// If any source page is rotated, skip form copying/transformation entirely
boolean hasRotation = GeneralFormCopyUtils.hasAnyRotatedPage(sourceDocument);
if (hasRotation) {
log.info("Source document has rotated pages; skipping form field copying.");
} else {
try {
GeneralFormCopyUtils.copyAndTransformFormFields(
sourceDocument,
newDocument,
newPage,
PDPageContentStream.AppendMode.APPEND,
true,
true);
}
totalPages,
pagesPerSheet,
cols,
rows,
cellWidth,
cellHeight);
} catch (Exception e) {
log.warn("Failed to copy and transform form fields: {}", e.getMessage(), e);
}
}
PDPage sourcePage = sourceDocument.getPage(i);
PDRectangle rect = sourcePage.getMediaBox();
float scaleWidth = cellWidth / rect.getWidth();
float scaleHeight = cellHeight / rect.getHeight();
float scale = Math.min(scaleWidth, scaleHeight);
int adjustedPageIndex =
i % pagesPerSheet; // Close the current content stream and create a new
// page and content stream
int rowIndex = adjustedPageIndex / cols;
int colIndex = adjustedPageIndex % cols;
float x = colIndex * cellWidth + (cellWidth - rect.getWidth() * scale) / 2;
float y =
newPage.getMediaBox().getHeight()
- ((rowIndex + 1) * cellHeight
- (cellHeight - rect.getHeight() * scale) / 2);
contentStream.saveGraphicsState();
contentStream.transform(Matrix.getTranslateInstance(x, y));
contentStream.transform(Matrix.getScaleInstance(scale, scale));
PDFormXObject formXObject = layerUtility.importPageAsForm(sourceDocument, i);
contentStream.drawForm(formXObject);
contentStream.restoreGraphicsState();
if (addBorder) {
// Draw border around each page
float borderX = colIndex * cellWidth;
float borderY = newPage.getMediaBox().getHeight() - (rowIndex + 1) * cellHeight;
contentStream.addRect(borderX, borderY, cellWidth, cellHeight);
contentStream.stroke();
}
}
contentStream.close();
// If any source page is rotated, skip form copying/transformation entirely
boolean hasRotation = GeneralFormCopyUtils.hasAnyRotatedPage(sourceDocument);
if (hasRotation) {
log.info("Source document has rotated pages; skipping form field copying.");
} else {
try {
GeneralFormCopyUtils.copyAndTransformFormFields(
sourceDocument,
newDocument,
totalPages,
pagesPerSheet,
cols,
rows,
cellWidth,
cellHeight);
} catch (Exception e) {
log.warn("Failed to copy and transform form fields: {}", e.getMessage(), e);
}
}
sourceDocument.close();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
newDocument.save(baos);
newDocument.close();
byte[] result = baos.toByteArray();
return WebResponseUtils.bytesToWebResponse(
result,
GeneralUtils.generateFilename(
file.getOriginalFilename(), "_multi_page_layout.pdf"));
ByteArrayOutputStream baos = new ByteArrayOutputStream();
newDocument.save(baos);
byte[] result = baos.toByteArray();
return WebResponseUtils.bytesToWebResponse(
result,
GeneralUtils.generateFilename(
file.getOriginalFilename(), "_multi_page_layout.pdf"));
} // newDocument is closed here
} // sourceDocument is closed here
}
}

33
app/core/src/main/java/stirling/software/SPDF/controller/api/PdfImageRemovalController.java
View File

@ -53,25 +53,28 @@ public class PdfImageRemovalController {
"This endpoint remove images from file to reduce the file size.Input:PDF"
+ " Output:PDF Type:SISO")
public ResponseEntity<byte[]> removeImages(@ModelAttribute PDFFile file) throws IOException {
// Load the PDF document
PDDocument document = pdfDocumentFactory.load(file);
// Load the PDF document with proper resource management
try (PDDocument document = pdfDocumentFactory.load(file)) {
// Remove images from the PDF document using the service
PDDocument modifiedDocument = pdfImageRemovalService.removeImagesFromPdf(document);
// Remove images from the PDF document using the service
try (PDDocument modifiedDocument =
pdfImageRemovalService.removeImagesFromPdf(document)) {
// Create a ByteArrayOutputStream to hold the modified PDF data
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
// Create a ByteArrayOutputStream to hold the modified PDF data
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
// Save the modified PDF document to the output stream
modifiedDocument.save(outputStream);
modifiedDocument.close();
// Save the modified PDF document to the output stream
modifiedDocument.save(outputStream);
// Generate a new filename for the modified PDF
String mergedFileName =
GeneralUtils.generateFilename(
file.getFileInput().getOriginalFilename(), "_images_removed.pdf");
// Generate a new filename for the modified PDF
String mergedFileName =
GeneralUtils.generateFilename(
file.getFileInput().getOriginalFilename(), "_images_removed.pdf");
// Convert the byte array to a web response and return it
return WebResponseUtils.bytesToWebResponse(outputStream.toByteArray(), mergedFileName);
// Convert the byte array to a web response and return it
return WebResponseUtils.bytesToWebResponse(
outputStream.toByteArray(), mergedFileName);
}
}
}
}

94
app/core/src/main/java/stirling/software/SPDF/controller/api/RearrangePagesPDFController.java
View File

@ -50,23 +50,25 @@ public class RearrangePagesPDFController {
MultipartFile pdfFile = request.getFileInput();
String pagesToDelete = request.getPageNumbers();
PDDocument document = pdfDocumentFactory.load(pdfFile);
try (PDDocument document = pdfDocumentFactory.load(pdfFile)) {
// Split the page order string into an array of page numbers or range of numbers
String[] pageOrderArr = pagesToDelete.split(",");
// Split the page order string into an array of page numbers or range of numbers
String[] pageOrderArr = pagesToDelete.split(",");
List<Integer> pagesToRemove =
GeneralUtils.parsePageList(pageOrderArr, document.getNumberOfPages(), false);
List<Integer> pagesToRemove =
GeneralUtils.parsePageList(pageOrderArr, document.getNumberOfPages(), false);
Collections.sort(pagesToRemove);
Collections.sort(pagesToRemove);
for (int i = pagesToRemove.size() - 1; i >= 0; i--) {
int pageIndex = pagesToRemove.get(i);
document.removePage(pageIndex);
for (int i = pagesToRemove.size() - 1; i >= 0; i--) {
int pageIndex = pagesToRemove.get(i);
document.removePage(pageIndex);
}
return WebResponseUtils.pdfDocToWebResponse(
document,
GeneralUtils.generateFilename(
pdfFile.getOriginalFilename(), "_removed_pages.pdf"));
}
return WebResponseUtils.pdfDocToWebResponse(
document,
GeneralUtils.generateFilename(pdfFile.getOriginalFilename(), "_removed_pages.pdf"));
}
private List<Integer> removeFirst(int totalPages) {
@ -243,41 +245,43 @@ public class RearrangePagesPDFController {
String pageOrder = request.getPageNumbers();
String sortType = request.getCustomMode();
try {
// Load the input PDF
PDDocument document = pdfDocumentFactory.load(pdfFile);
// Load the input PDF with proper resource management
try (PDDocument document = pdfDocumentFactory.load(pdfFile)) {
// Split the page order string into an array of page numbers or range of numbers
String[] pageOrderArr = pageOrder != null ? pageOrder.split(",") : new String[0];
int totalPages = document.getNumberOfPages();
List<Integer> newPageOrder;
if (sortType != null
&& !sortType.isEmpty()
&& !"custom".equals(sortType.toLowerCase(Locale.ROOT))) {
newPageOrder = processSortTypes(sortType, totalPages, pageOrder);
} else {
newPageOrder = GeneralUtils.parsePageList(pageOrderArr, totalPages, false);
// Split the page order string into an array of page numbers or range of numbers
String[] pageOrderArr = pageOrder != null ? pageOrder.split(",") : new String[0];
int totalPages = document.getNumberOfPages();
List<Integer> newPageOrder;
if (sortType != null
&& !sortType.isEmpty()
&& !"custom".equals(sortType.toLowerCase(Locale.ROOT))) {
newPageOrder = processSortTypes(sortType, totalPages, pageOrder);
} else {
newPageOrder = GeneralUtils.parsePageList(pageOrderArr, totalPages, false);
}
log.info("newPageOrder = {}", newPageOrder);
log.info("totalPages = {}", totalPages);
// Create a new list to hold the pages in the new order
List<PDPage> newPages = new ArrayList<>();
for (int i = 0; i < newPageOrder.size(); i++) {
newPages.add(document.getPage(newPageOrder.get(i)));
}
// Create a new document based on the original one
try (PDDocument rearrangedDocument =
pdfDocumentFactory.createNewDocumentBasedOnOldDocument(document)) {
// Add the pages in the new order
for (PDPage page : newPages) {
rearrangedDocument.addPage(page);
}
return WebResponseUtils.pdfDocToWebResponse(
rearrangedDocument,
GeneralUtils.generateFilename(
pdfFile.getOriginalFilename(), "_rearranged.pdf"));
}
}
log.info("newPageOrder = {}", newPageOrder);
log.info("totalPages = {}", totalPages);
// Create a new list to hold the pages in the new order
List<PDPage> newPages = new ArrayList<>();
for (int i = 0; i < newPageOrder.size(); i++) {
newPages.add(document.getPage(newPageOrder.get(i)));
}
// Create a new document based on the original one
PDDocument rearrangedDocument =
pdfDocumentFactory.createNewDocumentBasedOnOldDocument(document);
// Add the pages in the new order
for (PDPage page : newPages) {
rearrangedDocument.addPage(page);
}
return WebResponseUtils.pdfDocToWebResponse(
rearrangedDocument,
GeneralUtils.generateFilename(
pdfFile.getOriginalFilename(), "_rearranged.pdf"));
} catch (IOException e) {
ExceptionUtils.logException("document rearrangement", e);
throw e;

23
app/core/src/main/java/stirling/software/SPDF/controller/api/RotationController.java
View File

@ -47,19 +47,20 @@ public class RotationController {
"error.angleNotMultipleOf90", "Angle must be a multiple of 90");
}
// Load the PDF document
PDDocument document = pdfDocumentFactory.load(request);
// Load the PDF document with proper resource management
try (PDDocument document = pdfDocumentFactory.load(request)) {
// Get the list of pages in the document
PDPageTree pages = document.getPages();
// Get the list of pages in the document
PDPageTree pages = document.getPages();
for (PDPage page : pages) {
page.setRotation(page.getRotation() + angle);
for (PDPage page : pages) {
page.setRotation(page.getRotation() + angle);
}
// Return the rotated PDF as a response
return WebResponseUtils.pdfDocToWebResponse(
document,
GeneralUtils.generateFilename(pdfFile.getOriginalFilename(), "_rotated.pdf"));
}
// Return the rotated PDF as a response
return WebResponseUtils.pdfDocToWebResponse(
document,
GeneralUtils.generateFilename(pdfFile.getOriginalFilename(), "_rotated.pdf"));
}
}

17
app/core/src/main/java/stirling/software/SPDF/controller/api/SplitPdfBySectionsController.java
View File

@ -4,6 +4,7 @@ import java.io.IOException;
import java.io.OutputStream;
import java.nio.file.Files;
import java.util.*;
import java.util.stream.IntStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
@ -264,27 +265,19 @@ public class SplitPdfBySectionsController {
break;
case SPLIT_ALL:
for (int i = 0; i < totalPages; i++) {
pagesToSplit.add(i);
}
pagesToSplit.addAll(IntStream.range(0, totalPages).boxed().toList());
break;
case SPLIT_ALL_EXCEPT_FIRST:
for (int i = 1; i < totalPages; i++) {
pagesToSplit.add(i);
}
pagesToSplit.addAll(IntStream.range(1, totalPages).boxed().toList());
break;
case SPLIT_ALL_EXCEPT_LAST:
for (int i = 0; i < totalPages - 1; i++) {
pagesToSplit.add(i);
}
pagesToSplit.addAll(IntStream.range(0, totalPages - 1).boxed().toList());
break;
case SPLIT_ALL_EXCEPT_FIRST_AND_LAST:
for (int i = 1; i < totalPages - 1; i++) {
pagesToSplit.add(i);
}
pagesToSplit.addAll(IntStream.range(1, totalPages - 1).boxed().toList());
break;
default:

50
app/core/src/main/java/stirling/software/SPDF/controller/api/SplitPdfBySizeController.java
View File

@ -473,34 +473,36 @@ public class SplitPdfBySizeController {
PDDocument document, ZipOutputStream zipOut, String baseFilename, int index)
throws IOException {
log.debug("Starting saveDocumentToZip for document part {}", index);
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
try (ByteArrayOutputStream outStream = new ByteArrayOutputStream()) {
try (PDDocument doc = document) {
log.debug("Saving document part {} to byte array", index);
doc.save(outStream);
log.debug("Successfully saved document part {} ({} bytes)", index, outStream.size());
} catch (Exception e) {
log.error("Error saving document part {} to byte array", index, e);
throw ExceptionUtils.createFileProcessingException("split", e);
}
try (PDDocument doc = document) {
log.debug("Saving document part {} to byte array", index);
doc.save(outStream);
log.debug(
"Successfully saved document part {} ({} bytes)", index, outStream.size());
} catch (Exception e) {
log.error("Error saving document part {} to byte array", index, e);
throw ExceptionUtils.createFileProcessingException("split", e);
}
try {
// Create a new zip entry
String entryName = baseFilename + "_" + index + ".pdf";
log.debug("Creating ZIP entry: {}", entryName);
ZipEntry zipEntry = new ZipEntry(entryName);
zipOut.putNextEntry(zipEntry);
try {
// Create a new zip entry
String entryName = baseFilename + "_" + index + ".pdf";
log.debug("Creating ZIP entry: {}", entryName);
ZipEntry zipEntry = new ZipEntry(entryName);
zipOut.putNextEntry(zipEntry);
byte[] bytes = outStream.toByteArray();
log.debug("Writing {} bytes to ZIP entry", bytes.length);
zipOut.write(bytes);
byte[] bytes = outStream.toByteArray();
log.debug("Writing {} bytes to ZIP entry", bytes.length);
zipOut.write(bytes);
log.debug("Closing ZIP entry");
zipOut.closeEntry();
log.debug("Successfully added document part {} to ZIP", index);
} catch (Exception e) {
log.error("Error adding document part {} to ZIP", index, e);
throw ExceptionUtils.createFileProcessingException("split", e);
log.debug("Closing ZIP entry");
zipOut.closeEntry();
log.debug("Successfully added document part {} to ZIP", index);
} catch (Exception e) {
log.error("Error adding document part {} to ZIP", index, e);
throw ExceptionUtils.createFileProcessingException("split", e);
}
}
}
}

6
app/core/src/main/java/stirling/software/SPDF/controller/api/converters/ConvertImgPDFController.java
View File

@ -188,15 +188,15 @@ public class ConvertImgPDFController {
bodyBytes = Files.readAllBytes(webpFilePath);
} else {
// Create a ZIP file containing all WebP images
ByteArrayOutputStream zipOutputStream = new ByteArrayOutputStream();
try (ZipOutputStream zos = new ZipOutputStream(zipOutputStream)) {
try (ByteArrayOutputStream zipOutputStream = new ByteArrayOutputStream();
ZipOutputStream zos = new ZipOutputStream(zipOutputStream)) {
for (Path webpFile : webpFiles) {
zos.putNextEntry(new ZipEntry(webpFile.getFileName().toString()));
Files.copy(webpFile, zos);
zos.closeEntry();
}
bodyBytes = zipOutputStream.toByteArray();
}
bodyBytes = zipOutputStream.toByteArray();
}
// Clean up the temporary files
Files.deleteIfExists(tempFile);

11
app/core/src/main/java/stirling/software/SPDF/controller/api/converters/ConvertOfficeController.java
View File

@ -196,11 +196,12 @@ public class ConvertOfficeController {
try {
file = convertToPdf(inputFile);
PDDocument doc = pdfDocumentFactory.load(file);
return WebResponseUtils.pdfDocToWebResponse(
doc,
GeneralUtils.generateFilename(
inputFile.getOriginalFilename(), "_convertedToPDF.pdf"));
try (PDDocument doc = pdfDocumentFactory.load(file)) {
return WebResponseUtils.pdfDocToWebResponse(
doc,
GeneralUtils.generateFilename(
inputFile.getOriginalFilename(), "_convertedToPDF.pdf"));
}
} finally {
if (file != null && file.getParent() != null) {
FileUtils.deleteDirectory(file.getParentFile());

8
app/core/src/main/java/stirling/software/SPDF/controller/api/converters/ConvertPDFToPDFA.java
View File

@ -51,7 +51,7 @@ import org.apache.pdfbox.pdmodel.graphics.image.LosslessFactory;
import org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject;
import org.apache.pdfbox.pdmodel.graphics.optionalcontent.PDOptionalContentProperties;
import org.apache.pdfbox.pdmodel.interactive.annotation.PDAnnotation;
import org.apache.pdfbox.pdmodel.interactive.annotation.PDAnnotationTextMarkup;
import org.apache.pdfbox.pdmodel.interactive.annotation.PDAnnotationHighlight;
import org.apache.pdfbox.pdmodel.interactive.annotation.PDAnnotationWidget;
import org.apache.pdfbox.pdmodel.interactive.annotation.PDAppearanceDictionary;
import org.apache.pdfbox.pdmodel.interactive.viewerpreferences.PDViewerPreferences;
@ -1211,7 +1211,7 @@ public class ConvertPDFToPDFA {
List<PDAnnotation> annotations = page.getAnnotations();
for (PDAnnotation annot : annotations) {
if (ANNOTATION_HIGHLIGHT.equals(annot.getSubtype())
&& annot instanceof PDAnnotationTextMarkup highlight) {
&& annot instanceof PDAnnotationHighlight highlight) {
float[] colorComponents =
highlight.getColor() != null
? highlight.getColor().getComponents()
@ -1851,7 +1851,7 @@ public class ConvertPDFToPDFA {
doc, page, PDPageContentStream.AppendMode.PREPEND, true, true)) {
for (PDAnnotation annot : annotations) {
if (annot instanceof PDAnnotationTextMarkup highlight
if (annot instanceof PDAnnotationHighlight highlight
&& ANNOTATION_HIGHLIGHT.equals(annot.getSubtype())) {
PDColor color = highlight.getColor();
@ -1973,7 +1973,7 @@ public class ConvertPDFToPDFA {
return annot.getAppearance() != null;
}
if (annot instanceof PDAnnotationTextMarkup) {
if (annot instanceof PDAnnotationHighlight) {
return false; // Will be handled by flattening
}

167
app/core/src/main/java/stirling/software/SPDF/controller/api/misc/AutoRenameController.java
View File

@ -47,102 +47,105 @@ public class AutoRenameController {
MultipartFile file = request.getFileInput();
boolean useFirstTextAsFallback = Boolean.TRUE.equals(request.getUseFirstTextAsFallback());
PDDocument document = pdfDocumentFactory.load(file);
PDFTextStripper reader =
new PDFTextStripper() {
List<LineInfo> lineInfos = new ArrayList<>();
StringBuilder lineBuilder = new StringBuilder();
float lastY = -1;
float maxFontSizeInLine = 0.0f;
int lineCount = 0;
try (PDDocument document = pdfDocumentFactory.load(file)) {
PDFTextStripper reader =
new PDFTextStripper() {
List<LineInfo> lineInfos = new ArrayList<>();
StringBuilder lineBuilder = new StringBuilder();
float lastY = -1;
float maxFontSizeInLine = 0.0f;
int lineCount = 0;
@Override
protected void processTextPosition(TextPosition text) {
if (lastY != text.getY() && lineCount < LINE_LIMIT) {
processLine();
lineBuilder = new StringBuilder(text.getUnicode());
maxFontSizeInLine = text.getFontSizeInPt();
lastY = text.getY();
lineCount++;
} else if (lineCount < LINE_LIMIT) {
lineBuilder.append(text.getUnicode());
if (text.getFontSizeInPt() > maxFontSizeInLine) {
@Override
protected void processTextPosition(TextPosition text) {
if (lastY != text.getY() && lineCount < LINE_LIMIT) {
processLine();
lineBuilder = new StringBuilder(text.getUnicode());
maxFontSizeInLine = text.getFontSizeInPt();
lastY = text.getY();
lineCount++;
} else if (lineCount < LINE_LIMIT) {
lineBuilder.append(text.getUnicode());
if (text.getFontSizeInPt() > maxFontSizeInLine) {
maxFontSizeInLine = text.getFontSizeInPt();
}
}
}
}
private void processLine() {
if (!lineBuilder.isEmpty() && lineCount < LINE_LIMIT) {
lineInfos.add(new LineInfo(lineBuilder.toString(), maxFontSizeInLine));
}
}
@Override
public String getText(PDDocument doc) throws IOException {
this.lineInfos.clear();
this.lineBuilder = new StringBuilder();
this.lastY = -1;
this.maxFontSizeInLine = 0.0f;
this.lineCount = 0;
super.getText(doc);
processLine(); // Process the last line
// Merge lines with same font size
List<LineInfo> mergedLineInfos = new ArrayList<>();
for (int i = 0; i < lineInfos.size(); i++) {
StringBuilder mergedText = new StringBuilder(lineInfos.get(i).text);
float fontSize = lineInfos.get(i).fontSize;
while (i + 1 < lineInfos.size()
&& lineInfos.get(i + 1).fontSize == fontSize) {
mergedText.append(" ").append(lineInfos.get(i + 1).text);
i++;
private void processLine() {
if (!lineBuilder.isEmpty() && lineCount < LINE_LIMIT) {
lineInfos.add(
new LineInfo(lineBuilder.toString(), maxFontSizeInLine));
}
mergedLineInfos.add(new LineInfo(mergedText.toString(), fontSize));
}
// Sort lines by font size in descending order and get the first one
mergedLineInfos.sort(
Comparator.comparing((LineInfo li) -> li.fontSize).reversed());
String title =
mergedLineInfos.isEmpty() ? null : mergedLineInfos.get(0).text;
@Override
public String getText(PDDocument doc) throws IOException {
this.lineInfos.clear();
this.lineBuilder = new StringBuilder();
this.lastY = -1;
this.maxFontSizeInLine = 0.0f;
this.lineCount = 0;
super.getText(doc);
processLine(); // Process the last line
return title != null
? title
: (useFirstTextAsFallback
? (mergedLineInfos.isEmpty()
? null
: mergedLineInfos.get(mergedLineInfos.size() - 1)
.text)
: null);
}
// Merge lines with same font size
List<LineInfo> mergedLineInfos = new ArrayList<>();
for (int i = 0; i < lineInfos.size(); i++) {
StringBuilder mergedText = new StringBuilder(lineInfos.get(i).text);
float fontSize = lineInfos.get(i).fontSize;
while (i + 1 < lineInfos.size()
&& lineInfos.get(i + 1).fontSize == fontSize) {
mergedText.append(" ").append(lineInfos.get(i + 1).text);
i++;
}
mergedLineInfos.add(new LineInfo(mergedText.toString(), fontSize));
}
class LineInfo {
String text;
float fontSize;
// Sort lines by font size in descending order and get the first one
mergedLineInfos.sort(
Comparator.comparing((LineInfo li) -> li.fontSize).reversed());
String title =
mergedLineInfos.isEmpty() ? null : mergedLineInfos.get(0).text;
LineInfo(String text, float fontSize) {
this.text = text;
this.fontSize = fontSize;
return title != null
? title
: (useFirstTextAsFallback
? (mergedLineInfos.isEmpty()
? null
: mergedLineInfos.get(
mergedLineInfos.size() - 1)
.text)
: null);
}
}
};
String header = reader.getText(document);
class LineInfo {
String text;
float fontSize;
// Sanitize the header string by removing characters not allowed in a filename.
if (header != null && header.length() < 255) {
header =
RegexPatternUtils.getInstance()
.getSafeFilenamePattern()
.matcher(header)
.replaceAll("")
.trim();
return WebResponseUtils.pdfDocToWebResponse(document, header + ".pdf");
} else {
log.info("File has no good title to be found");
return WebResponseUtils.pdfDocToWebResponse(
document, Filenames.toSimpleFileName(file.getOriginalFilename()));
LineInfo(String text, float fontSize) {
this.text = text;
this.fontSize = fontSize;
}
}
};
String header = reader.getText(document);
// Sanitize the header string by removing characters not allowed in a filename.
if (header != null && header.length() < 255) {
header =
RegexPatternUtils.getInstance()
.getSafeFilenamePattern()
.matcher(header)
.replaceAll("")
.trim();
return WebResponseUtils.pdfDocToWebResponse(document, header + ".pdf");
} else {
log.info("File has no good title to be found");
return WebResponseUtils.pdfDocToWebResponse(
document, Filenames.toSimpleFileName(file.getOriginalFilename()));
}
}
}
}

5
app/core/src/main/java/stirling/software/SPDF/controller/api/misc/CompressController.java
View File

@ -1100,8 +1100,9 @@ public class CompressController {
inputFile.getOriginalFilename(), "_Optimized.pdf");
try {
return WebResponseUtils.pdfDocToWebResponse(
pdfDocumentFactory.load(currentFile.toFile()), outputFilename);
try (PDDocument document = pdfDocumentFactory.load(currentFile.toFile())) {
return WebResponseUtils.pdfDocToWebResponse(document, outputFilename);
}
} catch (IOException e) {
throw ExceptionUtils.handlePdfException(e, "PDF optimization");
}

172
app/core/src/main/java/stirling/software/SPDF/controller/api/misc/FlattenController.java
View File

@ -49,93 +49,103 @@ public class FlattenController {
public ResponseEntity<byte[]> flatten(@ModelAttribute FlattenRequest request) throws Exception {
MultipartFile file = request.getFileInput();
PDDocument document = pdfDocumentFactory.load(file);
Boolean flattenOnlyForms = request.getFlattenOnlyForms();
try (PDDocument document = pdfDocumentFactory.load(file)) {
Boolean flattenOnlyForms = request.getFlattenOnlyForms();
if (Boolean.TRUE.equals(flattenOnlyForms)) {
PDAcroForm acroForm = document.getDocumentCatalog().getAcroForm();
if (acroForm != null) {
acroForm.flatten();
}
return WebResponseUtils.pdfDocToWebResponse(
document, Filenames.toSimpleFileName(file.getOriginalFilename()));
} else {
// flatten whole page aka convert each page to image and re-add it (making text
// unselectable)
PDFRenderer pdfRenderer = new PDFRenderer(document);
PDDocument newDocument =
pdfDocumentFactory.createNewDocumentBasedOnOldDocument(document);
if (Boolean.TRUE.equals(flattenOnlyForms)) {
PDAcroForm acroForm = document.getDocumentCatalog().getAcroForm();
if (acroForm != null) {
acroForm.flatten();
}
return WebResponseUtils.pdfDocToWebResponse(
document, Filenames.toSimpleFileName(file.getOriginalFilename()));
} else {
// flatten whole page aka convert each page to image and re-add it (making text
// unselectable)
PDFRenderer pdfRenderer = new PDFRenderer(document);
pdfRenderer.setSubsamplingAllowed(
true); // Enable subsampling to reduce memory usage
int defaultRenderDpi = 100; // Default fallback
ApplicationProperties properties =
ApplicationContextProvider.getBean(ApplicationProperties.class);
Integer configuredMaxDpi = null;
if (properties != null && properties.getSystem() != null) {
configuredMaxDpi = properties.getSystem().getMaxDPI();
}
try (PDDocument newDocument =
pdfDocumentFactory.createNewDocumentBasedOnOldDocument(document)) {
int maxDpi =
(configuredMaxDpi != null && configuredMaxDpi > 0)
? configuredMaxDpi
: defaultRenderDpi;
Integer requestedDpi = request.getRenderDpi();
int renderDpiTemp = maxDpi;
if (requestedDpi != null) {
renderDpiTemp = Math.min(requestedDpi, maxDpi);
renderDpiTemp = Math.max(renderDpiTemp, 72);
}
final int renderDpi = renderDpiTemp;
int numPages = document.getNumberOfPages();
for (int i = 0; i < numPages; i++) {
final int pageIndex = i;
BufferedImage image = null;
try {
// Validate dimensions BEFORE rendering to prevent OOM
ExceptionUtils.validateRenderingDimensions(
document.getPage(pageIndex), pageIndex + 1, renderDpi);
// Wrap entire rendering operation to catch OutOfMemoryError from any depth
image =
ExceptionUtils.handleOomRendering(
pageIndex + 1,
renderDpi,
() ->
pdfRenderer.renderImageWithDPI(
pageIndex, renderDpi, ImageType.RGB));
PDPage page = new PDPage();
page.setMediaBox(document.getPage(i).getMediaBox());
newDocument.addPage(page);
try (PDPageContentStream contentStream =
new PDPageContentStream(newDocument, page)) {
PDImageXObject pdImage = JPEGFactory.createFromImage(newDocument, image);
float pageWidth = page.getMediaBox().getWidth();
float pageHeight = page.getMediaBox().getHeight();
contentStream.drawImage(pdImage, 0, 0, pageWidth, pageHeight);
int defaultRenderDpi = 100; // Default fallback
ApplicationProperties properties =
ApplicationContextProvider.getBean(ApplicationProperties.class);
Integer configuredMaxDpi = null;
if (properties != null && properties.getSystem() != null) {
configuredMaxDpi = properties.getSystem().getMaxDPI();
}
} catch (ExceptionUtils.OutOfMemoryDpiException e) {
// Re-throw OutOfMemoryDpiException to be handled by GlobalExceptionHandler
newDocument.close();
document.close();
throw e;
} catch (IOException e) {
log.error("IOException during page processing: ", e);
// Continue processing other pages
} catch (OutOfMemoryError e) {
// Catch any OutOfMemoryError that escaped the inner try block
newDocument.close();
document.close();
throw ExceptionUtils.createOutOfMemoryDpiException(i + 1, renderDpi, e);
} finally {
// Help GC by clearing the image reference
image = null;
int maxDpi =
(configuredMaxDpi != null && configuredMaxDpi > 0)
? configuredMaxDpi
: defaultRenderDpi;
Integer requestedDpi = request.getRenderDpi();
int renderDpiTemp = maxDpi;
if (requestedDpi != null) {
renderDpiTemp = Math.min(requestedDpi, maxDpi);
renderDpiTemp = Math.max(renderDpiTemp, 72);
}
final int renderDpi = renderDpiTemp;
int numPages = document.getNumberOfPages();
for (int i = 0; i < numPages; i++) {
final int pageIndex = i;
BufferedImage image = null;
try {
// Validate dimensions BEFORE rendering to prevent OOM
ExceptionUtils.validateRenderingDimensions(
document.getPage(pageIndex), pageIndex + 1, renderDpi);
// Wrap entire rendering operation to catch OutOfMemoryError from any
// depth
image =
ExceptionUtils.handleOomRendering(
pageIndex + 1,
renderDpi,
() ->
pdfRenderer.renderImageWithDPI(
pageIndex, renderDpi, ImageType.RGB));
PDPage page = new PDPage();
page.setMediaBox(document.getPage(i).getMediaBox());
newDocument.addPage(page);
// resetContext=true: Ensure clean graphics state when overwriting.
try (PDPageContentStream contentStream =
new PDPageContentStream(
newDocument,
page,
PDPageContentStream.AppendMode.OVERWRITE,
true,
true)) {
PDImageXObject pdImage =
JPEGFactory.createFromImage(newDocument, image);
float pageWidth = page.getMediaBox().getWidth();
float pageHeight = page.getMediaBox().getHeight();
contentStream.drawImage(pdImage, 0, 0, pageWidth, pageHeight);
}
} catch (ExceptionUtils.OutOfMemoryDpiException e) {
// Re-throw OutOfMemoryDpiException to be handled by
// GlobalExceptionHandler
throw e;
} catch (IOException e) {
log.error("IOException during page processing: ", e);
// Continue processing other pages
} catch (OutOfMemoryError e) {
// Catch any OutOfMemoryError that escaped the inner try block
throw ExceptionUtils.createOutOfMemoryDpiException(i + 1, renderDpi, e);
} finally {
// Help GC by clearing the image reference
image = null;
}
}
return WebResponseUtils.pdfDocToWebResponse(
newDocument, Filenames.toSimpleFileName(file.getOriginalFilename()));
}
}
return WebResponseUtils.pdfDocToWebResponse(
newDocument, Filenames.toSimpleFileName(file.getOriginalFilename()));
}
}
}

173
app/core/src/main/java/stirling/software/SPDF/controller/api/misc/MetadataController.java
View File

@ -84,93 +84,102 @@ public class MetadataController {
if (allRequestParams == null) {
allRequestParams = new java.util.HashMap<String, String>();
}
// Load the PDF file into a PDDocument
PDDocument document = pdfDocumentFactory.load(pdfFile, true);
// Load the PDF file into a PDDocument with proper resource management
try (PDDocument document = pdfDocumentFactory.load(pdfFile, true)) {
// Get the document information from the PDF
PDDocumentInformation info = document.getDocumentInformation();
// Get the document information from the PDF
PDDocumentInformation info = document.getDocumentInformation();
// Check if each metadata value is "undefined" and set it to null if it is
author = checkUndefined(author);
creationDate = checkUndefined(creationDate);
creator = checkUndefined(creator);
keywords = checkUndefined(keywords);
modificationDate = checkUndefined(modificationDate);
producer = checkUndefined(producer);
subject = checkUndefined(subject);
title = checkUndefined(title);
trapped = checkUndefined(trapped);
// Check if each metadata value is "undefined" and set it to null if it is
author = checkUndefined(author);
creationDate = checkUndefined(creationDate);
creator = checkUndefined(creator);
keywords = checkUndefined(keywords);
modificationDate = checkUndefined(modificationDate);
producer = checkUndefined(producer);
subject = checkUndefined(subject);
title = checkUndefined(title);
trapped = checkUndefined(trapped);
// If the "deleteAll" flag is set, remove all metadata from the document
// information
if (deleteAll) {
for (String key : info.getMetadataKeys()) {
info.setCustomMetadataValue(key, null);
}
// Remove metadata from the PDF history
document.getDocumentCatalog().getCOSObject().removeItem(COSName.getPDFName("Metadata"));
document.getDocumentCatalog()
.getCOSObject()
.removeItem(COSName.getPDFName("PieceInfo"));
author = null;
creationDate = null;
creator = null;
keywords = null;
modificationDate = null;
producer = null;
subject = null;
title = null;
trapped = null;
} else {
// Iterate through the request parameters and set the metadata values
for (Entry<String, String> entry : allRequestParams.entrySet()) {
String key = entry.getKey();
// Check if the key is a standard metadata key
if (!"Author".equalsIgnoreCase(key)
&& !"CreationDate".equalsIgnoreCase(key)
&& !"Creator".equalsIgnoreCase(key)
&& !"Keywords".equalsIgnoreCase(key)
&& !"modificationDate".equalsIgnoreCase(key)
&& !"Producer".equalsIgnoreCase(key)
&& !"Subject".equalsIgnoreCase(key)
&& !"Title".equalsIgnoreCase(key)
&& !"Trapped".equalsIgnoreCase(key)
&& !key.contains("customKey")
&& !key.contains("customValue")) {
info.setCustomMetadataValue(key, entry.getValue());
} else if (key.contains("customKey")) {
int number =
Integer.parseInt(
RegexPatternUtils.getInstance()
.getNumericExtractionPattern()
.matcher(key)
.replaceAll(""));
String customKey = entry.getValue();
String customValue = allRequestParams.get("customValue" + number);
info.setCustomMetadataValue(customKey, customValue);
// If the "deleteAll" flag is set, remove all metadata from the document
// information
if (deleteAll) {
for (String key : info.getMetadataKeys()) {
info.setCustomMetadataValue(key, null);
}
// Remove metadata from the PDF history
document.getDocumentCatalog()
.getCOSObject()
.removeItem(COSName.getPDFName("Metadata"));
document.getDocumentCatalog()
.getCOSObject()
.removeItem(COSName.getPDFName("PieceInfo"));
author = null;
creationDate = null;
creator = null;
keywords = null;
modificationDate = null;
producer = null;
subject = null;
title = null;
trapped = null;
} else {
// Iterate through the request parameters and set the metadata values
for (Entry<String, String> entry : allRequestParams.entrySet()) {
String key = entry.getKey();
// Check if the key is a standard metadata key
if (!"Author".equalsIgnoreCase(key)
&& !"CreationDate".equalsIgnoreCase(key)
&& !"Creator".equalsIgnoreCase(key)
&& !"Keywords".equalsIgnoreCase(key)
&& !"modificationDate".equalsIgnoreCase(key)
&& !"Producer".equalsIgnoreCase(key)
&& !"Subject".equalsIgnoreCase(key)
&& !"Title".equalsIgnoreCase(key)
&& !"Trapped".equalsIgnoreCase(key)
&& !key.contains("customKey")
&& !key.contains("customValue")) {
info.setCustomMetadataValue(key, entry.getValue());
} else if (key.contains("customKey")) {
try {
int number =
Integer.parseInt(
RegexPatternUtils.getInstance()
.getNumericExtractionPattern()
.matcher(key)
.replaceAll(""));
String customKey = entry.getValue();
String customValue = allRequestParams.get("customValue" + number);
info.setCustomMetadataValue(customKey, customValue);
} catch (NumberFormatException e) {
// Skip invalid custom key entries that don't have valid numeric
// suffixes
log.warn("Skipping invalid custom key '{}': {}", key, e.getMessage());
}
}
}
}
// Set creation date using utility method
Calendar creationDateCal = PdfMetadataService.parseToCalendar(creationDate);
info.setCreationDate(creationDateCal);
// Set modification date using utility method
Calendar modificationDateCal = PdfMetadataService.parseToCalendar(modificationDate);
info.setModificationDate(modificationDateCal);
info.setCreator(creator);
info.setKeywords(keywords);
info.setAuthor(author);
info.setProducer(producer);
info.setSubject(subject);
info.setTitle(title);
info.setTrapped(trapped);
document.setDocumentInformation(info);
return WebResponseUtils.pdfDocToWebResponse(
document,
GeneralUtils.removeExtension(
Filenames.toSimpleFileName(pdfFile.getOriginalFilename()))
+ "_metadata.pdf");
}
// Set creation date using utility method
Calendar creationDateCal = PdfMetadataService.parseToCalendar(creationDate);
info.setCreationDate(creationDateCal);
// Set modification date using utility method
Calendar modificationDateCal = PdfMetadataService.parseToCalendar(modificationDate);
info.setModificationDate(modificationDateCal);
info.setCreator(creator);
info.setKeywords(keywords);
info.setAuthor(author);
info.setProducer(producer);
info.setSubject(subject);
info.setTitle(title);
info.setTrapped(trapped);
document.setDocumentInformation(info);
return WebResponseUtils.pdfDocToWebResponse(
document,
GeneralUtils.removeExtension(
Filenames.toSimpleFileName(pdfFile.getOriginalFilename()))
+ "_metadata.pdf");
}
}

5
app/core/src/main/java/stirling/software/SPDF/controller/api/misc/OCRController.java
View File

@ -15,6 +15,7 @@ import java.util.zip.ZipOutputStream;
import javax.imageio.ImageIO;
import org.apache.pdfbox.io.IOUtils;
import org.apache.pdfbox.multipdf.PDFMergerUtility;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
@ -326,6 +327,8 @@ public class OCRController {
try (PDDocument document = pdfDocumentFactory.load(tempInputFile.toFile())) {
PDFRenderer pdfRenderer = new PDFRenderer(document);
pdfRenderer.setSubsamplingAllowed(
true); // Enable subsampling to reduce memory usage
int pageCount = document.getNumberOfPages();
for (int pageNum = 0; pageNum < pageCount; pageNum++) {
@ -415,7 +418,7 @@ public class OCRController {
}
// Merge all pages into final PDF
merger.mergeDocuments(null);
merger.mergeDocuments(IOUtils.createTempFileOnlyStreamCache());
// Copy final output to the expected location
Files.copy(

207
app/core/src/main/java/stirling/software/SPDF/controller/api/misc/PageNumbersController.java
View File

@ -65,113 +65,114 @@ public class PageNumbersController {
}
}
PDDocument document = pdfDocumentFactory.load(file);
float marginFactor =
switch (customMargin == null ? "" : customMargin.toLowerCase(Locale.ROOT)) {
case "small" -> 0.02f;
case "large" -> 0.05f;
case "x-large" -> 0.075f;
case "medium" -> 0.035f;
default -> 0.035f;
};
if (pagesToNumber == null || pagesToNumber.isEmpty()) {
pagesToNumber = "all";
}
if (customText == null || customText.isEmpty()) {
customText = "{n}";
}
final String baseFilename =
Filenames.toSimpleFileName(file.getOriginalFilename())
.replaceFirst("[.][^.]+$", "");
List<Integer> pagesToNumberList =
GeneralUtils.parsePageList(pagesToNumber.split(","), document.getNumberOfPages());
// Clamp position to 1..9 (1 = top-left, 9 = bottom-right)
int pos = Math.max(1, Math.min(9, position));
for (int i : pagesToNumberList) {
PDPage page = document.getPage(i);
PDRectangle pageSize = page.getMediaBox();
String text =
customText
.replace("{n}", String.valueOf(pageNumber))
.replace("{total}", String.valueOf(document.getNumberOfPages()))
.replace(
"{filename}",
GeneralUtils.removeExtension(
Filenames.toSimpleFileName(
file.getOriginalFilename())));
PDType1Font currentFont =
switch (fontType == null ? "" : fontType.toLowerCase(Locale.ROOT)) {
case "courier" -> new PDType1Font(Standard14Fonts.FontName.COURIER);
case "times" -> new PDType1Font(Standard14Fonts.FontName.TIMES_ROMAN);
default -> new PDType1Font(Standard14Fonts.FontName.HELVETICA);
try (PDDocument document = pdfDocumentFactory.load(file)) {
float marginFactor =
switch (customMargin == null ? "" : customMargin.toLowerCase(Locale.ROOT)) {
case "small" -> 0.02f;
case "large" -> 0.05f;
case "x-large" -> 0.075f;
case "medium" -> 0.035f;
default -> 0.035f;
};
// Text dimensions and font metrics
float textWidth = currentFont.getStringWidth(text) / 1000f * fontSize;
float ascent = currentFont.getFontDescriptor().getAscent() / 1000f * fontSize;
float descent = currentFont.getFontDescriptor().getDescent() / 1000f * fontSize;
// Derive column/row in range 1..3 (1 = left/top, 2 = center/middle, 3 = right/bottom)
int col = ((pos - 1) % 3) + 1; // 1 = left, 2 = center, 3 = right
int row = ((pos - 1) / 3) + 1; // 1 = top, 2 = middle, 3 = bottom
// Anchor coordinates with margin
float leftX = pageSize.getLowerLeftX() + marginFactor * pageSize.getWidth();
float midX = pageSize.getLowerLeftX() + pageSize.getWidth() / 2f;
float rightX = pageSize.getUpperRightX() - marginFactor * pageSize.getWidth();
float botY = pageSize.getLowerLeftY() + marginFactor * pageSize.getHeight();
float midY = pageSize.getLowerLeftY() + pageSize.getHeight() / 2f;
float topY = pageSize.getUpperRightY() - marginFactor * pageSize.getHeight();
// Horizontal alignment: left = anchor, center = centered, right = right-aligned
float x =
switch (col) {
case 1 -> leftX;
case 2 -> midX - textWidth / 2f;
default -> rightX - textWidth;
};
// Vertical alignment (baseline!):
// top = align text top at topY,
// middle = optical middle using ascent/descent,
// bottom = baseline at botY
float y =
switch (row) {
case 1 -> topY - ascent;
case 2 -> midY - (ascent + descent) / 2f;
default -> botY;
};
try (PDPageContentStream contentStream =
new PDPageContentStream(
document, page, PDPageContentStream.AppendMode.APPEND, true, true)) {
contentStream.beginText();
contentStream.setFont(currentFont, fontSize);
contentStream.setNonStrokingColor(color);
contentStream.newLineAtOffset(x, y);
contentStream.showText(text);
contentStream.endText();
if (pagesToNumber == null || pagesToNumber.isEmpty()) {
pagesToNumber = "all";
}
if (customText == null || customText.isEmpty()) {
customText = "{n}";
}
pageNumber++;
List<Integer> pagesToNumberList =
GeneralUtils.parsePageList(
pagesToNumber.split(","), document.getNumberOfPages());
// Clamp position to 1..9 (1 = top-left, 9 = bottom-right)
int pos = Math.max(1, Math.min(9, position));
for (int i : pagesToNumberList) {
PDPage page = document.getPage(i);
PDRectangle pageSize = page.getMediaBox();
String text =
customText
.replace("{n}", String.valueOf(pageNumber))
.replace("{total}", String.valueOf(document.getNumberOfPages()))
.replace(
"{filename}",
GeneralUtils.removeExtension(
Filenames.toSimpleFileName(
file.getOriginalFilename())));
PDType1Font currentFont =
switch (fontType == null ? "" : fontType.toLowerCase(Locale.ROOT)) {
case "courier" -> new PDType1Font(Standard14Fonts.FontName.COURIER);
case "times" -> new PDType1Font(Standard14Fonts.FontName.TIMES_ROMAN);
default -> new PDType1Font(Standard14Fonts.FontName.HELVETICA);
};
// Text dimensions and font metrics
float textWidth = currentFont.getStringWidth(text) / 1000f * fontSize;
float ascent = currentFont.getFontDescriptor().getAscent() / 1000f * fontSize;
float descent = currentFont.getFontDescriptor().getDescent() / 1000f * fontSize;
// Derive column/row in range 1..3 (1 = left/top, 2 = center/middle, 3 =
// right/bottom)
int col = ((pos - 1) % 3) + 1; // 1 = left, 2 = center, 3 = right
int row = ((pos - 1) / 3) + 1; // 1 = top, 2 = middle, 3 = bottom
// Anchor coordinates with margin
float leftX = pageSize.getLowerLeftX() + marginFactor * pageSize.getWidth();
float midX = pageSize.getLowerLeftX() + pageSize.getWidth() / 2f;
float rightX = pageSize.getUpperRightX() - marginFactor * pageSize.getWidth();
float botY = pageSize.getLowerLeftY() + marginFactor * pageSize.getHeight();
float midY = pageSize.getLowerLeftY() + pageSize.getHeight() / 2f;
float topY = pageSize.getUpperRightY() - marginFactor * pageSize.getHeight();
// Horizontal alignment: left = anchor, center = centered, right = right-aligned
float x =
switch (col) {
case 1 -> leftX;
case 2 -> midX - textWidth / 2f;
default -> rightX - textWidth;
};
// Vertical alignment (baseline!):
// top = align text top at topY,
// middle = optical middle using ascent/descent,
// bottom = baseline at botY
float y =
switch (row) {
case 1 -> topY - ascent;
case 2 -> midY - (ascent + descent) / 2f;
default -> botY;
};
try (PDPageContentStream contentStream =
new PDPageContentStream(
document,
page,
PDPageContentStream.AppendMode.APPEND,
true,
true)) {
contentStream.beginText();
contentStream.setFont(currentFont, fontSize);
contentStream.setNonStrokingColor(color);
contentStream.newLineAtOffset(x, y);
contentStream.showText(text);
contentStream.endText();
}
pageNumber++;
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
document.save(baos);
return WebResponseUtils.bytesToWebResponse(
baos.toByteArray(),
GeneralUtils.generateFilename(
file.getOriginalFilename(), "_page_numbers_added.pdf"));
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
document.save(baos);
document.close();
return WebResponseUtils.bytesToWebResponse(
baos.toByteArray(),
GeneralUtils.generateFilename(
file.getOriginalFilename(), "_page_numbers_added.pdf"));
}
}

21
app/core/src/main/java/stirling/software/SPDF/controller/api/misc/PrintFileController.java
View File

@ -7,7 +7,10 @@ import java.awt.print.Printable;
import java.awt.print.PrinterException;
import java.awt.print.PrinterJob;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import java.util.Arrays;
import java.util.Locale;
@ -77,11 +80,19 @@ public class PrintFileController {
log.info("Selected Printer: {}", selectedService.getName());
if (MediaType.APPLICATION_PDF_VALUE.equals(contentType)) {
try (PDDocument document = Loader.loadPDF(file.getBytes())) {
PrinterJob job = PrinterJob.getPrinterJob();
job.setPrintService(selectedService);
job.setPageable(new PDFPageable(document));
job.print();
// Use Stream-to-File pattern: write to temp file first, then load from file
Path tempFile = Files.createTempFile("print-", ".pdf");
try {
Files.copy(
file.getInputStream(), tempFile, StandardCopyOption.REPLACE_EXISTING);
try (PDDocument document = Loader.loadPDF(tempFile.toFile())) {
PrinterJob job = PrinterJob.getPrinterJob();
job.setPrintService(selectedService);
job.setPageable(new PDFPageable(document));
job.print();
}
} finally {
Files.deleteIfExists(tempFile);
}
} else if (contentType.startsWith("image/")) {
try (var inputStream = file.getInputStream()) {

8
app/core/src/main/java/stirling/software/SPDF/controller/api/misc/ScannerEffectController.java
View File

@ -463,7 +463,13 @@ public class ScannerEffectController {
PDPage newPage = new PDPage(new PDRectangle(page.origW, page.origH));
document.addPage(newPage);
try (PDPageContentStream contentStream = new PDPageContentStream(document, newPage)) {
try (PDPageContentStream contentStream =
new PDPageContentStream(
document,
newPage,
PDPageContentStream.AppendMode.OVERWRITE,
true,
true)) {
PDImageXObject pdImage = LosslessFactory.createFromImage(document, page.image);
contentStream.drawImage(
pdImage, page.offsetX, page.offsetY, page.drawW, page.drawH);

97
app/core/src/main/java/stirling/software/SPDF/controller/api/misc/StampController.java
View File

@ -134,60 +134,65 @@ public class StampController {
};
// Load the input PDF
PDDocument document = pdfDocumentFactory.load(pdfFile);
try (PDDocument document = pdfDocumentFactory.load(pdfFile)) {
List<Integer> pageNumbers = request.getPageNumbersList(document, true);
List<Integer> pageNumbers = request.getPageNumbersList(document, true);
for (int pageIndex : pageNumbers) {
int zeroBasedIndex = pageIndex - 1;
if (zeroBasedIndex >= 0 && zeroBasedIndex < document.getNumberOfPages()) {
PDPage page = document.getPage(zeroBasedIndex);
PDRectangle pageSize = page.getMediaBox();
float margin = marginFactor * (pageSize.getWidth() + pageSize.getHeight()) / 2;
for (int pageIndex : pageNumbers) {
int zeroBasedIndex = pageIndex - 1;
if (zeroBasedIndex >= 0 && zeroBasedIndex < document.getNumberOfPages()) {
PDPage page = document.getPage(zeroBasedIndex);
PDRectangle pageSize = page.getMediaBox();
float margin = marginFactor * (pageSize.getWidth() + pageSize.getHeight()) / 2;
PDPageContentStream contentStream =
new PDPageContentStream(
document, page, PDPageContentStream.AppendMode.APPEND, true, true);
PDPageContentStream contentStream =
new PDPageContentStream(
document,
page,
PDPageContentStream.AppendMode.APPEND,
true,
true);
PDExtendedGraphicsState graphicsState = new PDExtendedGraphicsState();
graphicsState.setNonStrokingAlphaConstant(opacity);
contentStream.setGraphicsStateParameters(graphicsState);
PDExtendedGraphicsState graphicsState = new PDExtendedGraphicsState();
graphicsState.setNonStrokingAlphaConstant(opacity);
contentStream.setGraphicsStateParameters(graphicsState);
if ("text".equalsIgnoreCase(stampType)) {
addTextStamp(
contentStream,
stampText,
document,
page,
rotation,
position,
fontSize,
alphabet,
overrideX,
overrideY,
margin,
customColor);
} else if ("image".equalsIgnoreCase(stampType)) {
addImageStamp(
contentStream,
stampImage,
document,
page,
rotation,
position,
fontSize,
overrideX,
overrideY,
margin);
if ("text".equalsIgnoreCase(stampType)) {
addTextStamp(
contentStream,
stampText,
document,
page,
rotation,
position,
fontSize,
alphabet,
overrideX,
overrideY,
margin,
customColor);
} else if ("image".equalsIgnoreCase(stampType)) {
addImageStamp(
contentStream,
stampImage,
document,
page,
rotation,
position,
fontSize,
overrideX,
overrideY,
margin);
}
contentStream.close();
}
contentStream.close();
}
// Return the stamped PDF as a response
return WebResponseUtils.pdfDocToWebResponse(
document,
GeneralUtils.generateFilename(pdfFile.getOriginalFilename(), "_stamped.pdf"));
}
// Return the stamped PDF as a response
return WebResponseUtils.pdfDocToWebResponse(
document,
GeneralUtils.generateFilename(pdfFile.getOriginalFilename(), "_stamped.pdf"));
}
private void addTextStamp(

34
app/core/src/main/java/stirling/software/SPDF/controller/api/security/GetInfoOnPDF.java
View File

@ -3,6 +3,8 @@ package stirling.software.SPDF.controller.api.security;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.time.Instant;
import java.time.ZoneId;
import java.time.ZonedDateTime;
@ -14,7 +16,8 @@ import java.util.regex.Pattern;
import org.apache.pdfbox.cos.COSInputStream;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.cos.COSString;
import org.apache.pdfbox.io.RandomAccessReadBuffer;
import org.apache.pdfbox.io.RandomAccessRead;
import org.apache.pdfbox.io.RandomAccessReadBufferedFile;
import org.apache.pdfbox.pdmodel.*;
import org.apache.pdfbox.pdmodel.common.PDMetadata;
import org.apache.pdfbox.pdmodel.common.PDRectangle;
@ -198,10 +201,20 @@ public class GetInfoOnPDF {
return false;
}
try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
document.save(baos);
// Use Stream-to-File pattern: save to temp file instead of loading into memory
// This prevents OutOfMemoryError on large PDFs
Path tempFile = null;
try {
tempFile = Files.createTempFile("preflight-", ".pdf");
try (RandomAccessReadBuffer source = new RandomAccessReadBuffer(baos.toByteArray())) {
// Save document to temp file (avoids loading entire document into memory)
try (var outputStream = Files.newOutputStream(tempFile)) {
document.save(outputStream);
}
// Use RandomAccessReadBufferedFile for efficient file-based reading
// This avoids Windows file locking issues that occur with memory-mapped files
try (RandomAccessRead source = new RandomAccessReadBufferedFile(tempFile.toFile())) {
PreflightParser parser = new PreflightParser(source);
try (PDDocument parsedDocument = parser.parse()) {
@ -243,6 +256,19 @@ public class GetInfoOnPDF {
log.debug("IOException during PDF/A validation: {}", e.getMessage());
} catch (Exception e) {
log.debug("Unexpected error during PDF/A validation: {}", e.getMessage());
} finally {
// Explicitly clean up temp file to prevent disk exhaustion
// This must be in finally block to ensure cleanup even on exceptions
if (tempFile != null) {
try {
Files.deleteIfExists(tempFile);
} catch (IOException e) {
log.warn(
"Failed to delete temp file during PDF/A validation cleanup: {}",
tempFile,
e);
}
}
}
return false;

65
app/core/src/main/java/stirling/software/SPDF/controller/api/security/PasswordController.java
View File

@ -42,25 +42,17 @@ public class PasswordController {
MultipartFile fileInput = request.getFileInput();
String password = request.getPassword();
PDDocument document;
try {
document = pdfDocumentFactory.load(fileInput, password);
} catch (IOException e) {
// Handle password errors specifically
if (ExceptionUtils.isPasswordError(e)) {
throw ExceptionUtils.createPdfPasswordException(e);
}
throw ExceptionUtils.handlePdfException(e);
}
try {
try (PDDocument document = pdfDocumentFactory.load(fileInput, password)) {
document.setAllSecurityToBeRemoved(true);
return WebResponseUtils.pdfDocToWebResponse(
document,
GeneralUtils.generateFilename(
fileInput.getOriginalFilename(), "_password_removed.pdf"));
} catch (IOException e) {
document.close();
// Handle password errors specifically
if (ExceptionUtils.isPasswordError(e)) {
throw ExceptionUtils.createPdfPasswordException(e);
}
ExceptionUtils.logException("password removal", e);
throw ExceptionUtils.handlePdfException(e);
}
@ -91,31 +83,36 @@ public class PasswordController {
boolean preventPrinting = Boolean.TRUE.equals(request.getPreventPrinting());
boolean preventPrintingFaithful = Boolean.TRUE.equals(request.getPreventPrintingFaithful());
PDDocument document = pdfDocumentFactory.load(fileInput);
AccessPermission ap = new AccessPermission();
ap.setCanAssembleDocument(!preventAssembly);
ap.setCanExtractContent(!preventExtractContent);
ap.setCanExtractForAccessibility(!preventExtractForAccessibility);
ap.setCanFillInForm(!preventFillInForm);
ap.setCanModify(!preventModify);
ap.setCanModifyAnnotations(!preventModifyAnnotations);
ap.setCanPrint(!preventPrinting);
ap.setCanPrintFaithful(!preventPrintingFaithful);
StandardProtectionPolicy spp = new StandardProtectionPolicy(ownerPassword, password, ap);
try (PDDocument document = pdfDocumentFactory.load(fileInput)) {
AccessPermission ap = new AccessPermission();
ap.setCanAssembleDocument(!preventAssembly);
ap.setCanExtractContent(!preventExtractContent);
ap.setCanExtractForAccessibility(!preventExtractForAccessibility);
ap.setCanFillInForm(!preventFillInForm);
ap.setCanModify(!preventModify);
ap.setCanModifyAnnotations(!preventModifyAnnotations);
ap.setCanPrint(!preventPrinting);
ap.setCanPrintFaithful(!preventPrintingFaithful);
StandardProtectionPolicy spp =
new StandardProtectionPolicy(ownerPassword, password, ap);
if (!"".equals(ownerPassword) || !"".equals(password)) {
spp.setEncryptionKeyLength(keyLength);
}
spp.setPermissions(ap);
document.protect(spp);
if ((ownerPassword != null && ownerPassword.length() > 0)
|| (password != null && password.length() > 0)) {
spp.setEncryptionKeyLength(keyLength);
}
spp.setPermissions(ap);
document.protect(spp);
if ("".equals(ownerPassword) && "".equals(password))
if ((ownerPassword == null || ownerPassword.length() == 0)
&& (password == null || password.length() == 0))
return WebResponseUtils.pdfDocToWebResponse(
document,
GeneralUtils.generateFilename(
fileInput.getOriginalFilename(), "_permissions.pdf"));
return WebResponseUtils.pdfDocToWebResponse(
document,
GeneralUtils.generateFilename(
fileInput.getOriginalFilename(), "_permissions.pdf"));
return WebResponseUtils.pdfDocToWebResponse(
document,
GeneralUtils.generateFilename(fileInput.getOriginalFilename(), "_passworded.pdf"));
fileInput.getOriginalFilename(), "_passworded.pdf"));
}
}
}

37
app/core/src/main/java/stirling/software/SPDF/controller/api/security/RemoveCertSignController.java
View File

@ -41,28 +41,29 @@ public class RemoveCertSignController {
throws Exception {
MultipartFile pdf = request.getFileInput();
// Load the PDF document
PDDocument document = pdfDocumentFactory.load(pdf);
// Load the PDF document with proper resource management
try (PDDocument document = pdfDocumentFactory.load(pdf)) {
// Get the document catalog
PDDocumentCatalog catalog = document.getDocumentCatalog();
// Get the document catalog
PDDocumentCatalog catalog = document.getDocumentCatalog();
// Get the AcroForm
PDAcroForm acroForm = catalog.getAcroForm();
if (acroForm != null) {
// Remove signature fields safely
List<PDField> fieldsToRemove =
acroForm.getFields().stream()
.filter(field -> field instanceof PDSignatureField)
.toList();
// Get the AcroForm
PDAcroForm acroForm = catalog.getAcroForm();
if (acroForm != null) {
// Remove signature fields safely
List<PDField> fieldsToRemove =
acroForm.getFields().stream()
.filter(field -> field instanceof PDSignatureField)
.toList();
if (!fieldsToRemove.isEmpty()) {
acroForm.flatten(fieldsToRemove, false);
if (!fieldsToRemove.isEmpty()) {
acroForm.flatten(fieldsToRemove, false);
}
}
// Return the modified PDF as a response
return WebResponseUtils.pdfDocToWebResponse(
document,
GeneralUtils.generateFilename(pdf.getOriginalFilename(), "_unsigned.pdf"));
}
// Return the modified PDF as a response
return WebResponseUtils.pdfDocToWebResponse(
document,
GeneralUtils.generateFilename(pdf.getOriginalFilename(), "_unsigned.pdf"));
}
}

65
app/core/src/main/java/stirling/software/SPDF/controller/api/security/SanitizeController.java
View File

@ -67,39 +67,40 @@ public class SanitizeController {
boolean removeLinks = Boolean.TRUE.equals(request.getRemoveLinks());
boolean removeFonts = Boolean.TRUE.equals(request.getRemoveFonts());
PDDocument document = pdfDocumentFactory.load(inputFile, true);
if (removeJavaScript) {
sanitizeJavaScript(document);
try (PDDocument document = pdfDocumentFactory.load(inputFile, true)) {
if (removeJavaScript) {
sanitizeJavaScript(document);
}
if (removeEmbeddedFiles) {
sanitizeEmbeddedFiles(document);
}
if (removeXMPMetadata) {
sanitizeXMPMetadata(document);
}
if (removeMetadata) {
sanitizeDocumentInfoMetadata(document);
}
if (removeLinks) {
sanitizeLinks(document);
}
if (removeFonts) {
sanitizeFonts(document);
}
// Save the sanitized document to output stream
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
document.save(outputStream);
return WebResponseUtils.bytesToWebResponse(
outputStream.toByteArray(),
GeneralUtils.generateFilename(
inputFile.getOriginalFilename(), "_sanitized.pdf"));
}
if (removeEmbeddedFiles) {
sanitizeEmbeddedFiles(document);
}
if (removeXMPMetadata) {
sanitizeXMPMetadata(document);
}
if (removeMetadata) {
sanitizeDocumentInfoMetadata(document);
}
if (removeLinks) {
sanitizeLinks(document);
}
if (removeFonts) {
sanitizeFonts(document);
}
// Save the sanitized document to output stream
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
document.save(outputStream);
document.close();
return WebResponseUtils.bytesToWebResponse(
outputStream.toByteArray(),
GeneralUtils.generateFilename(inputFile.getOriginalFilename(), "_sanitized.pdf"));
}
private static void sanitizeJavaScript(PDDocument document) throws IOException {

103
app/core/src/main/java/stirling/software/SPDF/controller/api/security/WatermarkController.java
View File

@ -98,60 +98,67 @@ public class WatermarkController {
String customColor = request.getCustomColor();
boolean convertPdfToImage = Boolean.TRUE.equals(request.getConvertPDFToImage());
// Load the input PDF
PDDocument document = pdfDocumentFactory.load(pdfFile);
// Load the input PDF with proper resource management
try (PDDocument document = pdfDocumentFactory.load(pdfFile)) {
// Create a page in the document
for (PDPage page : document.getPages()) {
// Create a page in the document
for (PDPage page : document.getPages()) {
// Get the page's content stream
try (PDPageContentStream contentStream =
new PDPageContentStream(
document,
page,
PDPageContentStream.AppendMode.APPEND,
true,
true)) {
// Get the page's content stream
PDPageContentStream contentStream =
new PDPageContentStream(
document, page, PDPageContentStream.AppendMode.APPEND, true, true);
// Set transparency
PDExtendedGraphicsState graphicsState = new PDExtendedGraphicsState();
graphicsState.setNonStrokingAlphaConstant(opacity);
contentStream.setGraphicsStateParameters(graphicsState);
// Set transparency
PDExtendedGraphicsState graphicsState = new PDExtendedGraphicsState();
graphicsState.setNonStrokingAlphaConstant(opacity);
contentStream.setGraphicsStateParameters(graphicsState);
if ("text".equalsIgnoreCase(watermarkType)) {
addTextWatermark(
contentStream,
watermarkText,
document,
page,
rotation,
widthSpacer,
heightSpacer,
fontSize,
alphabet,
customColor);
} else if ("image".equalsIgnoreCase(watermarkType)) {
addImageWatermark(
contentStream,
watermarkImage,
document,
page,
rotation,
widthSpacer,
heightSpacer,
fontSize);
if ("text".equalsIgnoreCase(watermarkType)) {
addTextWatermark(
contentStream,
watermarkText,
document,
page,
rotation,
widthSpacer,
heightSpacer,
fontSize,
alphabet,
customColor);
} else if ("image".equalsIgnoreCase(watermarkType)) {
addImageWatermark(
contentStream,
watermarkImage,
document,
page,
rotation,
widthSpacer,
heightSpacer,
fontSize);
}
}
}
// Close the content stream
contentStream.close();
if (convertPdfToImage) {
try (PDDocument convertedPdf = PdfUtils.convertPdfToPdfImage(document)) {
// Return the watermarked PDF as a response
return WebResponseUtils.pdfDocToWebResponse(
convertedPdf,
GeneralUtils.generateFilename(
pdfFile.getOriginalFilename(), "_watermarked.pdf"));
}
} else {
// Return the watermarked PDF as a response
return WebResponseUtils.pdfDocToWebResponse(
document,
GeneralUtils.generateFilename(
pdfFile.getOriginalFilename(), "_watermarked.pdf"));
}
}
if (convertPdfToImage) {
PDDocument convertedPdf = PdfUtils.convertPdfToPdfImage(document);
document.close();
document = convertedPdf;
}
// Return the watermarked PDF as a response
return WebResponseUtils.pdfDocToWebResponse(
document,
GeneralUtils.generateFilename(pdfFile.getOriginalFilename(), "_watermarked.pdf"));
}
private void addTextWatermark(

42
app/core/src/main/java/stirling/software/SPDF/exception/GlobalExceptionHandler.java
View File

@ -80,7 +80,7 @@ import stirling.software.common.util.RegexPatternUtils;
* <pre>{@code
* // In controllers/services - use ExceptionUtils to create typed exceptions:
* try {
* PDDocument doc = PDDocument.load(file);
* PDDocument doc = Loader.loadPDF(file);
* } catch (IOException e) {
* throw ExceptionUtils.createPdfCorruptedException("during load", e);
* }
@ -1117,6 +1117,34 @@ public class GlobalExceptionHandler {
return handleBaseApp((BaseAppException) processedException, request);
}
// Check if this is a NoSuchFileException (temp file was deleted prematurely)
if (ex instanceof java.nio.file.NoSuchFileException) {
log.error(
"Temporary file not found at {}: {}",
request.getRequestURI(),
ex.getMessage(),
ex);
String message =
getLocalizedMessage(
"error.tempFileNotFound.detail",
"The temporary file was not found. This may indicate a processing error or cleanup issue. Please try again.");
String title =
getLocalizedMessage("error.tempFileNotFound.title", "Temporary File Not Found");
ProblemDetail problemDetail =
createBaseProblemDetail(HttpStatus.INTERNAL_SERVER_ERROR, message, request);
problemDetail.setType(URI.create("https://stirlingpdf.com/errors/temp-file-not-found"));
problemDetail.setTitle(title);
problemDetail.setProperty("title", title);
problemDetail.setProperty("errorCode", "E999");
problemDetail.setProperty(
"hint.1",
"This error usually occurs when temporary files are cleaned up before processing completes.");
problemDetail.setProperty("hint.2", "Try submitting your request again.");
return new ResponseEntity<>(problemDetail, HttpStatus.INTERNAL_SERVER_ERROR);
}
log.error("IO error at {}: {}", request.getRequestURI(), ex.getMessage(), ex);
String message =
@ -1161,9 +1189,19 @@ public class GlobalExceptionHandler {
*/
@ExceptionHandler(Exception.class)
public ResponseEntity<ProblemDetail> handleGenericException(
Exception ex, HttpServletRequest request) {
Exception ex, HttpServletRequest request, HttpServletResponse response) {
log.error("Unexpected error at {}: {}", request.getRequestURI(), ex.getMessage(), ex);
// If response is already committed (e.g., during streaming), we can't send an error
// response
// Log the error and return null to let Spring handle it gracefully
if (response.isCommitted()) {
log.warn(
"Cannot send error response because response is already committed for URI: {}",
request.getRequestURI());
return null; // Spring will handle gracefully
}
String userMessage =
getLocalizedMessage(
"error.unexpected",

3
app/core/src/main/java/stirling/software/SPDF/service/pdfjson/type3/library/Type3FontLibrary.java
View File

@ -220,6 +220,9 @@ public class Type3FontLibrary {
}
private byte[] loadResourceBytes(String location) throws IOException {
if (location == null || location.isBlank()) {
throw new IOException("Resource location is null or blank");
}
String resolved = resolveLocation(location);
Resource resource = resourceLoader.getResource(resolved);
if (!resource.exists()) {

1
app/proprietary/src/main/java/stirling/software/proprietary/util/FormUtils.java
View File

@ -292,6 +292,7 @@ public class FormUtils {
}
PDFRenderer renderer = new PDFRenderer(document);
renderer.setSubsamplingAllowed(true); // Enable subsampling to reduce memory usage
ApplicationProperties properties =
ApplicationContextProvider.getBean(ApplicationProperties.class);