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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 <[email protected]>
This commit is contained in:
Balázs Szücs
2026-01-05 23:43:16 +00:00
committed by GitHub
parent faf0a3555e
commit 91bf9abbaa
39 changed files with 1027 additions and 845 deletions
Download Patch File Download Diff File Expand all files Collapse all files
app/common/build.gradle
+1
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
app/common/src/main/java/stirling/software/common/util/CbrUtils.java
+6 -1
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) {
app/common/src/main/java/stirling/software/common/util/CbzUtils.java
+6 -1
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) {
app/common/src/main/java/stirling/software/common/util/ExceptionUtils.java
+1 -1
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);
* }
app/common/src/main/java/stirling/software/common/util/PdfToCbrUtils.java
+1
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<>();
app/common/src/main/java/stirling/software/common/util/PdfToCbzUtils.java
+1
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)) {
app/common/src/main/java/stirling/software/common/util/PdfUtils.java
+13 -9
View File
@@ -119,12 +119,12 @@ public class PdfUtils {
public boolean hasTextOnPage(PDPage page, String phrase) throws IOException {
PDFTextStripper textStripper = new PDFTextStripper();
PDDocument tempDoc = new PDDocument();
try (PDDocument tempDoc = new PDDocument()) {
tempDoc.addPage(page);
String pageText = textStripper.getText(tempDoc);
tempDoc.close();
return pageText.contains(phrase);
}
}
public byte[] convertFromPdf(
CustomPDFDocumentFactory pdfDocumentFactory,
@@ -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))) {
@@ -400,6 +398,7 @@ public class PdfUtils {
*/
public PDDocument convertPdfToPdfImage(PDDocument document) throws IOException {
PDDocument imageDocument = new PDDocument();
try {
PDFRenderer pdfRenderer = new PDFRenderer(document);
pdfRenderer.setSubsamplingAllowed(true);
for (int page = 0; page < document.getNumberOfPages(); ++page) {
@@ -443,12 +442,17 @@ public class PdfUtils {
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);
try (PDPageContentStream contentStream =
new PDPageContentStream(
imageDocument, newPage, AppendMode.APPEND, true, true)) {
contentStream.drawImage(pdImage, 0, 0, width, height);
contentStream.close();
}
bim.flush();
}
return imageDocument;
} catch (Exception e) {
throw e;
}
}
private BufferedImage prepareImageForPdfToImage(int maxWidth, int height, String imageType) {
app/common/src/main/java/stirling/software/common/util/WebResponseUtils.java
-1
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);
}
app/common/src/main/java/stirling/software/common/util/misc/CustomColorReplaceStrategy.java
+6 -1
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);
}
}
}
app/common/src/main/java/stirling/software/common/util/misc/InvertFullColorStrategy.java
+35 -3
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;
}
app/common/src/test/java/stirling/software/common/util/WebResponseUtilsTest.java
+1 -2
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";
app/core/src/main/java/stirling/software/SPDF/controller/api/BookletImpositionController.java
+9 -8
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
@@ -68,11 +69,11 @@ public class BookletImpositionController {
"Booklet printing uses 2 pages per side (landscape). For 4-up, use the N-up feature.");
}
PDDocument sourceDocument = pdfDocumentFactory.load(file);
try (PDDocument sourceDocument = pdfDocumentFactory.load(file)) {
int totalPages = sourceDocument.getNumberOfPages();
// Create proper booklet with signature-based page ordering
PDDocument newDocument =
try (PDDocument newDocument =
createSaddleBooklet(
sourceDocument,
totalPages,
@@ -82,19 +83,19 @@ public class BookletImpositionController {
gutterSize,
doubleSided,
duplexPass,
flipOnShortEdge);
sourceDocument.close();
flipOnShortEdge)) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
newDocument.save(baos);
newDocument.close();
byte[] result = baos.toByteArray();
return WebResponseUtils.bytesToWebResponse(
result,
Filenames.toSimpleFileName(file.getOriginalFilename()).replaceFirst("[.][^.]+$", "")
+ "_booklet.pdf");
GeneralUtils.generateFilename(
Filenames.toSimpleFileName(file.getOriginalFilename()),
"_booklet.pdf"));
}
}
}
private static int padToMultipleOf4(int n) {
app/core/src/main/java/stirling/software/SPDF/controller/api/CropController.java
+1
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++) {
app/core/src/main/java/stirling/software/SPDF/controller/api/MultiPageLayoutController.java
+39 -38
View File
@@ -70,53 +70,53 @@ 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);
try (PDDocument sourceDocument = pdfDocumentFactory.load(file)) {
try (PDDocument newDocument =
pdfDocumentFactory.createNewDocumentBasedOnOldDocument(sourceDocument)) {
int totalPages = sourceDocument.getNumberOfPages();
LayerUtility layerUtility = new LayerUtility(newDocument);
// 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;
// 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);
int totalPages = sourceDocument.getNumberOfPages();
float cellWidth = newPage.getMediaBox().getWidth() / cols;
float cellHeight = newPage.getMediaBox().getHeight() / rows;
PDPageContentStream contentStream =
new PDPageContentStream(
newDocument, newPage, PDPageContentStream.AppendMode.APPEND, true, true);
LayerUtility layerUtility = new LayerUtility(newDocument);
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 =
// 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);
}
true)) {
float borderThickness = 1.5f; // Specify border thickness as required
contentStream.setLineWidth(borderThickness);
contentStream.setStrokingColor(Color.BLACK);
PDPage sourcePage = sourceDocument.getPage(i);
// 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 =
i % pagesPerSheet; // Close the current content stream and create a new
// page and content stream
int adjustedPageIndex = j % pagesPerSheet;
int rowIndex = adjustedPageIndex / cols;
int colIndex = adjustedPageIndex % cols;
float x = colIndex * cellWidth + (cellWidth - rect.getWidth() * scale) / 2;
float x =
colIndex * cellWidth
+ (cellWidth - rect.getWidth() * scale) / 2;
float y =
newPage.getMediaBox().getHeight()
- ((rowIndex + 1) * cellHeight
@@ -126,7 +126,8 @@ public class MultiPageLayoutController {
contentStream.transform(Matrix.getTranslateInstance(x, y));
contentStream.transform(Matrix.getScaleInstance(scale, scale));
PDFormXObject formXObject = layerUtility.importPageAsForm(sourceDocument, i);
PDFormXObject formXObject =
layerUtility.importPageAsForm(sourceDocument, pageIndex);
contentStream.drawForm(formXObject);
contentStream.restoreGraphicsState();
@@ -134,13 +135,15 @@ public class MultiPageLayoutController {
if (addBorder) {
// Draw border around each page
float borderX = colIndex * cellWidth;
float borderY = newPage.getMediaBox().getHeight() - (rowIndex + 1) * cellHeight;
float borderY =
newPage.getMediaBox().getHeight()
- (rowIndex + 1) * cellHeight;
contentStream.addRect(borderX, borderY, cellWidth, cellHeight);
contentStream.stroke();
}
}
contentStream.close();
} // contentStream is automatically closed here
}
// If any source page is rotated, skip form copying/transformation entirely
boolean hasRotation = GeneralFormCopyUtils.hasAnyRotatedPage(sourceDocument);
@@ -162,16 +165,14 @@ public class MultiPageLayoutController {
}
}
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"));
} // newDocument is closed here
} // sourceDocument is closed here
}
}
app/core/src/main/java/stirling/software/SPDF/controller/api/PdfImageRemovalController.java
+8 -5
View File
@@ -53,18 +53,18 @@ 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);
try (PDDocument modifiedDocument =
pdfImageRemovalService.removeImagesFromPdf(document)) {
// 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();
// Generate a new filename for the modified PDF
String mergedFileName =
@@ -72,6 +72,9 @@ public class PdfImageRemovalController {
file.getFileInput().getOriginalFilename(), "_images_removed.pdf");
// Convert the byte array to a web response and return it
return WebResponseUtils.bytesToWebResponse(outputStream.toByteArray(), mergedFileName);
return WebResponseUtils.bytesToWebResponse(
outputStream.toByteArray(), mergedFileName);
}
}
}
}
app/core/src/main/java/stirling/software/SPDF/controller/api/RearrangePagesPDFController.java
+10 -6
View File
@@ -50,7 +50,7 @@ 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(",");
@@ -66,7 +66,9 @@ public class RearrangePagesPDFController {
}
return WebResponseUtils.pdfDocToWebResponse(
document,
GeneralUtils.generateFilename(pdfFile.getOriginalFilename(), "_removed_pages.pdf"));
GeneralUtils.generateFilename(
pdfFile.getOriginalFilename(), "_removed_pages.pdf"));
}
}
private List<Integer> removeFirst(int totalPages) {
@@ -243,8 +245,8 @@ 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];
@@ -266,8 +268,8 @@ public class RearrangePagesPDFController {
}
// Create a new document based on the original one
PDDocument rearrangedDocument =
pdfDocumentFactory.createNewDocumentBasedOnOldDocument(document);
try (PDDocument rearrangedDocument =
pdfDocumentFactory.createNewDocumentBasedOnOldDocument(document)) {
// Add the pages in the new order
for (PDPage page : newPages) {
@@ -278,6 +280,8 @@ public class RearrangePagesPDFController {
rearrangedDocument,
GeneralUtils.generateFilename(
pdfFile.getOriginalFilename(), "_rearranged.pdf"));
}
}
} catch (IOException e) {
ExceptionUtils.logException("document rearrangement", e);
throw e;
app/core/src/main/java/stirling/software/SPDF/controller/api/RotationController.java
+3 -2
View File
@@ -47,8 +47,8 @@ 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();
@@ -62,4 +62,5 @@ public class RotationController {
document,
GeneralUtils.generateFilename(pdfFile.getOriginalFilename(), "_rotated.pdf"));
}
}
}
app/core/src/main/java/stirling/software/SPDF/controller/api/SplitPdfBySectionsController.java
+5 -12
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:
app/core/src/main/java/stirling/software/SPDF/controller/api/SplitPdfBySizeController.java
+4 -2
View File
@@ -473,12 +473,13 @@ 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());
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);
@@ -503,4 +504,5 @@ public class SplitPdfBySizeController {
throw ExceptionUtils.createFileProcessingException("split", e);
}
}
}
}
app/core/src/main/java/stirling/software/SPDF/controller/api/converters/ConvertImgPDFController.java
+3 -3
View File
@@ -188,16 +188,16 @@ 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();
}
}
// Clean up the temporary files
Files.deleteIfExists(tempFile);
if (tempOutputDir != null) FileUtils.deleteDirectory(tempOutputDir.toFile());
app/core/src/main/java/stirling/software/SPDF/controller/api/converters/ConvertOfficeController.java
+2 -1
View File
@@ -196,11 +196,12 @@ public class ConvertOfficeController {
try {
file = convertToPdf(inputFile);
PDDocument doc = pdfDocumentFactory.load(file);
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());
app/core/src/main/java/stirling/software/SPDF/controller/api/converters/ConvertPDFToPDFA.java
+4 -4
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
}
app/core/src/main/java/stirling/software/SPDF/controller/api/misc/AutoRenameController.java
+6 -3
View File
@@ -47,7 +47,7 @@ public class AutoRenameController {
MultipartFile file = request.getFileInput();
boolean useFirstTextAsFallback = Boolean.TRUE.equals(request.getUseFirstTextAsFallback());
PDDocument document = pdfDocumentFactory.load(file);
try (PDDocument document = pdfDocumentFactory.load(file)) {
PDFTextStripper reader =
new PDFTextStripper() {
List<LineInfo> lineInfos = new ArrayList<>();
@@ -74,7 +74,8 @@ public class AutoRenameController {
private void processLine() {
if (!lineBuilder.isEmpty() && lineCount < LINE_LIMIT) {
lineInfos.add(new LineInfo(lineBuilder.toString(), maxFontSizeInLine));
lineInfos.add(
new LineInfo(lineBuilder.toString(), maxFontSizeInLine));
}
}
@@ -112,7 +113,8 @@ public class AutoRenameController {
: (useFirstTextAsFallback
? (mergedLineInfos.isEmpty()
? null
: mergedLineInfos.get(mergedLineInfos.size() - 1)
: mergedLineInfos.get(
mergedLineInfos.size() - 1)
.text)
: null);
}
@@ -145,4 +147,5 @@ public class AutoRenameController {
document, Filenames.toSimpleFileName(file.getOriginalFilename()));
}
}
}
}
app/core/src/main/java/stirling/software/SPDF/controller/api/misc/CompressController.java
+3 -2
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");
}
app/core/src/main/java/stirling/software/SPDF/controller/api/misc/FlattenController.java
+21 -11
View File
@@ -49,7 +49,7 @@ public class FlattenController {
public ResponseEntity<byte[]> flatten(@ModelAttribute FlattenRequest request) throws Exception {
MultipartFile file = request.getFileInput();
PDDocument document = pdfDocumentFactory.load(file);
try (PDDocument document = pdfDocumentFactory.load(file)) {
Boolean flattenOnlyForms = request.getFlattenOnlyForms();
if (Boolean.TRUE.equals(flattenOnlyForms)) {
@@ -63,8 +63,11 @@ public class FlattenController {
// 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);
pdfRenderer.setSubsamplingAllowed(
true); // Enable subsampling to reduce memory usage
try (PDDocument newDocument =
pdfDocumentFactory.createNewDocumentBasedOnOldDocument(document)) {
int defaultRenderDpi = 100; // Default fallback
ApplicationProperties properties =
@@ -96,7 +99,8 @@ public class FlattenController {
ExceptionUtils.validateRenderingDimensions(
document.getPage(pageIndex), pageIndex + 1, renderDpi);
// Wrap entire rendering operation to catch OutOfMemoryError from any depth
// Wrap entire rendering operation to catch OutOfMemoryError from any
// depth
image =
ExceptionUtils.handleOomRendering(
pageIndex + 1,
@@ -108,26 +112,30 @@ public class FlattenController {
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)) {
PDImageXObject pdImage = JPEGFactory.createFromImage(newDocument, image);
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
newDocument.close();
document.close();
// 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
newDocument.close();
document.close();
throw ExceptionUtils.createOutOfMemoryDpiException(i + 1, renderDpi, e);
} finally {
// Help GC by clearing the image reference
@@ -138,4 +146,6 @@ public class FlattenController {
newDocument, Filenames.toSimpleFileName(file.getOriginalFilename()));
}
}
}
}
}
app/core/src/main/java/stirling/software/SPDF/controller/api/misc/MetadataController.java
+12 -3
View File
@@ -84,8 +84,8 @@ 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();
@@ -108,7 +108,9 @@ public class MetadataController {
info.setCustomMetadataValue(key, null);
}
// Remove metadata from the PDF history
document.getDocumentCatalog().getCOSObject().removeItem(COSName.getPDFName("Metadata"));
document.getDocumentCatalog()
.getCOSObject()
.removeItem(COSName.getPDFName("Metadata"));
document.getDocumentCatalog()
.getCOSObject()
.removeItem(COSName.getPDFName("PieceInfo"));
@@ -139,6 +141,7 @@ public class MetadataController {
&& !key.contains("customValue")) {
info.setCustomMetadataValue(key, entry.getValue());
} else if (key.contains("customKey")) {
try {
int number =
Integer.parseInt(
RegexPatternUtils.getInstance()
@@ -148,6 +151,11 @@ public class MetadataController {
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());
}
}
}
}
@@ -173,4 +181,5 @@ public class MetadataController {
Filenames.toSimpleFileName(pdfFile.getOriginalFilename()))
+ "_metadata.pdf");
}
}
}
app/core/src/main/java/stirling/software/SPDF/controller/api/misc/OCRController.java
+4 -1
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(
app/core/src/main/java/stirling/software/SPDF/controller/api/misc/PageNumbersController.java
+11 -10
View File
@@ -65,8 +65,7 @@ public class PageNumbersController {
}
}
PDDocument document = pdfDocumentFactory.load(file);
try (PDDocument document = pdfDocumentFactory.load(file)) {
float marginFactor =
switch (customMargin == null ? "" : customMargin.toLowerCase(Locale.ROOT)) {
case "small" -> 0.02f;
@@ -83,12 +82,9 @@ public class PageNumbersController {
customText = "{n}";
}
final String baseFilename =
Filenames.toSimpleFileName(file.getOriginalFilename())
.replaceFirst("[.][^.]+$", "");
List<Integer> pagesToNumberList =
GeneralUtils.parsePageList(pagesToNumber.split(","), document.getNumberOfPages());
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));
@@ -119,7 +115,8 @@ public class PageNumbersController {
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)
// 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
@@ -153,7 +150,11 @@ public class PageNumbersController {
try (PDPageContentStream contentStream =
new PDPageContentStream(
document, page, PDPageContentStream.AppendMode.APPEND, true, true)) {
document,
page,
PDPageContentStream.AppendMode.APPEND,
true,
true)) {
contentStream.beginText();
contentStream.setFont(currentFont, fontSize);
contentStream.setNonStrokingColor(color);
@@ -167,11 +168,11 @@ public class PageNumbersController {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
document.save(baos);
document.close();
return WebResponseUtils.bytesToWebResponse(
baos.toByteArray(),
GeneralUtils.generateFilename(
file.getOriginalFilename(), "_page_numbers_added.pdf"));
}
}
}
app/core/src/main/java/stirling/software/SPDF/controller/api/misc/PrintFileController.java
+12 -1
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;
@@ -77,12 +80,20 @@ public class PrintFileController {
log.info("Selected Printer: {}", selectedService.getName());
if (MediaType.APPLICATION_PDF_VALUE.equals(contentType)) {
try (PDDocument document = Loader.loadPDF(file.getBytes())) {
// 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()) {
BufferedImage image = ImageIO.read(inputStream);
app/core/src/main/java/stirling/software/SPDF/controller/api/misc/ScannerEffectController.java
+7 -1
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);
app/core/src/main/java/stirling/software/SPDF/controller/api/misc/StampController.java
+7 -2
View File
@@ -134,7 +134,7 @@ 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);
@@ -147,7 +147,11 @@ public class StampController {
PDPageContentStream contentStream =
new PDPageContentStream(
document, page, PDPageContentStream.AppendMode.APPEND, true, true);
document,
page,
PDPageContentStream.AppendMode.APPEND,
true,
true);
PDExtendedGraphicsState graphicsState = new PDExtendedGraphicsState();
graphicsState.setNonStrokingAlphaConstant(opacity);
@@ -189,6 +193,7 @@ public class StampController {
document,
GeneralUtils.generateFilename(pdfFile.getOriginalFilename(), "_stamped.pdf"));
}
}
private void addTextStamp(
PDPageContentStream contentStream,
app/core/src/main/java/stirling/software/SPDF/controller/api/security/GetInfoOnPDF.java
+30 -4
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;
app/core/src/main/java/stirling/software/SPDF/controller/api/security/PasswordController.java
+15 -18
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);
}
@@ -91,7 +83,7 @@ public class PasswordController {
boolean preventPrinting = Boolean.TRUE.equals(request.getPreventPrinting());
boolean preventPrintingFaithful = Boolean.TRUE.equals(request.getPreventPrintingFaithful());
PDDocument document = pdfDocumentFactory.load(fileInput);
try (PDDocument document = pdfDocumentFactory.load(fileInput)) {
AccessPermission ap = new AccessPermission();
ap.setCanAssembleDocument(!preventAssembly);
ap.setCanExtractContent(!preventExtractContent);
@@ -101,21 +93,26 @@ public class PasswordController {
ap.setCanModifyAnnotations(!preventModifyAnnotations);
ap.setCanPrint(!preventPrinting);
ap.setCanPrintFaithful(!preventPrintingFaithful);
StandardProtectionPolicy spp = new StandardProtectionPolicy(ownerPassword, password, ap);
StandardProtectionPolicy spp =
new StandardProtectionPolicy(ownerPassword, password, ap);
if (!"".equals(ownerPassword) || !"".equals(password)) {
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(), "_passworded.pdf"));
GeneralUtils.generateFilename(
fileInput.getOriginalFilename(), "_passworded.pdf"));
}
}
}
app/core/src/main/java/stirling/software/SPDF/controller/api/security/RemoveCertSignController.java
+3 -2
View File
@@ -41,8 +41,8 @@ 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();
@@ -65,4 +65,5 @@ public class RemoveCertSignController {
document,
GeneralUtils.generateFilename(pdf.getOriginalFilename(), "_unsigned.pdf"));
}
}
}
app/core/src/main/java/stirling/software/SPDF/controller/api/security/SanitizeController.java
+4 -3
View File
@@ -67,7 +67,7 @@ public class SanitizeController {
boolean removeLinks = Boolean.TRUE.equals(request.getRemoveLinks());
boolean removeFonts = Boolean.TRUE.equals(request.getRemoveFonts());
PDDocument document = pdfDocumentFactory.load(inputFile, true);
try (PDDocument document = pdfDocumentFactory.load(inputFile, true)) {
if (removeJavaScript) {
sanitizeJavaScript(document);
}
@@ -95,11 +95,12 @@ public class SanitizeController {
// 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"));
GeneralUtils.generateFilename(
inputFile.getOriginalFilename(), "_sanitized.pdf"));
}
}
private static void sanitizeJavaScript(PDDocument document) throws IOException {
app/core/src/main/java/stirling/software/SPDF/controller/api/security/WatermarkController.java
+20 -13
View File
@@ -98,16 +98,19 @@ 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()) {
// Get the page's content stream
PDPageContentStream contentStream =
try (PDPageContentStream contentStream =
new PDPageContentStream(
document, page, PDPageContentStream.AppendMode.APPEND, true, true);
document,
page,
PDPageContentStream.AppendMode.APPEND,
true,
true)) {
// Set transparency
PDExtendedGraphicsState graphicsState = new PDExtendedGraphicsState();
@@ -137,21 +140,25 @@ public class WatermarkController {
heightSpacer,
fontSize);
}
// Close the content stream
contentStream.close();
}
}
if (convertPdfToImage) {
PDDocument convertedPdf = PdfUtils.convertPdfToPdfImage(document);
document.close();
document = convertedPdf;
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"));
GeneralUtils.generateFilename(
pdfFile.getOriginalFilename(), "_watermarked.pdf"));
}
}
}
private void addTextWatermark(
app/core/src/main/java/stirling/software/SPDF/exception/GlobalExceptionHandler.java
+40 -2
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",
app/core/src/main/java/stirling/software/SPDF/service/pdfjson/type3/library/Type3FontLibrary.java
+3
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()) {
app/proprietary/src/main/java/stirling/software/proprietary/util/FormUtils.java
+1
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);