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Exception cleanup, resource change and OCR Defaults (#3876)

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# Description of Changes

Please provide a summary of the changes, including:

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

Closes #(issue_number)

---

## Checklist

### General

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/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/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] 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/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### UI Changes (if applicable)

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

### Testing (if applicable)

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

---------

Co-authored-by: Copilot <[email protected]>
Co-authored-by: a <a>
This commit is contained in:
Anthony Stirling
2025-07-05 17:33:25 +01:00
committed by GitHub
co-authored by Copilot a <a>
parent b4a7b5d520
commit 14a4bdfb1b
16 changed files with 137 additions and 42 deletions
Download Patch File Download Diff File Expand all files Collapse all files
stirling-pdf/src/main/java/stirling/software/SPDF/controller/api/SplitPDFController.java
+1 -1
View File
@@ -72,7 +72,7 @@ public class SplitPDFController {
pageNumbers.add(totalPages - 1);
}
log.info(
log.debug(
"Splitting PDF into pages: {}",
pageNumbers.stream().map(String::valueOf).collect(Collectors.joining(",")));
stirling-pdf/src/main/java/stirling/software/SPDF/controller/api/ToSinglePageController.java
+4 -4
View File
@@ -70,17 +70,17 @@ public class ToSinglePageController {
float yOffset = totalHeight;
// For each page, copy its content to the new page at the correct offset
int pageIndex = 0;
for (PDPage page : sourceDocument.getPages()) {
PDFormXObject form =
layerUtility.importPageAsForm(
sourceDocument, sourceDocument.getPages().indexOf(page));
PDFormXObject form = layerUtility.importPageAsForm(sourceDocument, pageIndex);
AffineTransform af =
AffineTransform.getTranslateInstance(
0, yOffset - page.getMediaBox().getHeight());
layerUtility.wrapInSaveRestore(newPage);
String defaultLayerName = "Layer" + sourceDocument.getPages().indexOf(page);
String defaultLayerName = "Layer" + pageIndex;
layerUtility.appendFormAsLayer(newPage, form, af, defaultLayerName);
yOffset -= page.getMediaBox().getHeight();
pageIndex++;
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
stirling-pdf/src/main/java/stirling/software/SPDF/controller/api/misc/ExtractImagesController.java
+7 -4
View File
@@ -95,9 +95,9 @@ public class ExtractImagesController {
try {
int pageCount = document.getPages().getCount();
log.debug("Document reports {} pages", pageCount);
int consecutiveFailures = 0;
for (int pgNum = 0; pgNum < pageCount; pgNum++) {
try {
PDPage page = document.getPage(pgNum);
@@ -118,7 +118,10 @@ public class ExtractImagesController {
allowDuplicates);
} catch (Exception e) {
// Log the error and continue processing other pages
ExceptionUtils.logException("image extraction from page " + currentPageNum, e);
ExceptionUtils.logException(
"image extraction from page "
+ currentPageNum,
e);
}
return null; // Callable requires a return type
@@ -129,7 +132,7 @@ public class ExtractImagesController {
} catch (Exception e) {
consecutiveFailures++;
ExceptionUtils.logException("page access for page " + (pgNum + 1), e);
if (consecutiveFailures >= 3) {
log.warn("Stopping page iteration after 3 consecutive failures");
break;
stirling-pdf/src/main/java/stirling/software/SPDF/controller/api/misc/FakeScanController.java
+45 -2
View File
@@ -47,6 +47,11 @@ public class FakeScanController {
private final CustomPDFDocumentFactory pdfDocumentFactory;
private static final Random RANDOM = new Random();
// Size limits to prevent OutOfMemoryError
private static final int MAX_IMAGE_WIDTH = 8192;
private static final int MAX_IMAGE_HEIGHT = 8192;
private static final long MAX_IMAGE_PIXELS = 16_777_216; // 4096x4096
@PostMapping(value = "/fake-scan", consumes = "multipart/form-data")
@Operation(
summary = "Convert PDF to look like a scanned document",
@@ -82,8 +87,46 @@ public class FakeScanController {
PDFRenderer pdfRenderer = new PDFRenderer(document);
for (int i = 0; i < document.getNumberOfPages(); i++) {
// Render page to image with specified resolution
BufferedImage image = pdfRenderer.renderImageWithDPI(i, resolution);
// Get page dimensions to calculate safe resolution
PDRectangle pageSize = document.getPage(i).getMediaBox();
float pageWidthPts = pageSize.getWidth();
float pageHeightPts = pageSize.getHeight();
// Calculate what the image dimensions would be at the requested resolution
int projectedWidth = (int) Math.ceil(pageWidthPts * resolution / 72.0);
int projectedHeight = (int) Math.ceil(pageHeightPts * resolution / 72.0);
long projectedPixels = (long) projectedWidth * projectedHeight;
// Calculate safe resolution that stays within limits
int safeResolution = resolution;
if (projectedWidth > MAX_IMAGE_WIDTH
|| projectedHeight > MAX_IMAGE_HEIGHT
|| projectedPixels > MAX_IMAGE_PIXELS) {
double widthScale = (double) MAX_IMAGE_WIDTH / projectedWidth;
double heightScale = (double) MAX_IMAGE_HEIGHT / projectedHeight;
double pixelScale = Math.sqrt((double) MAX_IMAGE_PIXELS / projectedPixels);
double minScale = Math.min(Math.min(widthScale, heightScale), pixelScale);
safeResolution = (int) Math.max(72, resolution * minScale);
log.warn(
"Page {} would be too large at {}dpi ({}x{} pixels). Reducing to {}dpi",
i + 1,
resolution,
projectedWidth,
projectedHeight,
safeResolution);
}
// Render page to image with safe resolution
BufferedImage image = pdfRenderer.renderImageWithDPI(i, safeResolution);
log.debug(
"Processing page {} with dimensions {}x{} ({} pixels) at {}dpi",
i + 1,
image.getWidth(),
image.getHeight(),
(long) image.getWidth() * image.getHeight(),
safeResolution);
// 1. Convert to grayscale or keep color
BufferedImage processed;
stirling-pdf/src/main/java/stirling/software/SPDF/controller/api/pipeline/PipelineProcessor.java
+25 -15
View File
@@ -153,15 +153,19 @@ public class PipelineProcessor {
String filename = file.getFilename();
String providedExtension = "no extension";
if (filename != null && filename.contains(".")) {
providedExtension = filename.substring(filename.lastIndexOf(".")).toLowerCase();
providedExtension =
filename.substring(filename.lastIndexOf(".")).toLowerCase();
}
logPrintStream.println(
"No files with extension "
+ String.join(", ", inputFileTypes)
+ " found for operation "
+ operation
+ ". Provided file '" + filename + "' has extension: " + providedExtension);
+ ". Provided file '"
+ filename
+ "' has extension: "
+ providedExtension);
hasErrors = true;
}
}
@@ -211,17 +215,21 @@ public class PipelineProcessor {
}
} else {
// Get details about what files were actually provided
List<String> providedExtensions = outputFiles.stream()
.map(file -> {
String filename = file.getFilename();
if (filename != null && filename.contains(".")) {
return filename.substring(filename.lastIndexOf(".")).toLowerCase();
}
return "no extension";
})
.distinct()
.toList();
List<String> providedExtensions =
outputFiles.stream()
.map(
file -> {
String filename = file.getFilename();
if (filename != null && filename.contains(".")) {
return filename.substring(
filename.lastIndexOf("."))
.toLowerCase();
}
return "no extension";
})
.distinct()
.toList();
logPrintStream.println(
"No files with extension "
+ String.join(", ", inputFileTypes)
@@ -229,7 +237,9 @@ public class PipelineProcessor {
+ operation
+ ". Provided files have extensions: "
+ String.join(", ", providedExtensions)
+ " (total files: " + outputFiles.size() + ")");
+ " (total files: "
+ outputFiles.size()
+ ")");
hasErrors = true;
}
}
stirling-pdf/src/main/java/stirling/software/SPDF/controller/api/security/CertSignController.java
+2 -1
View File
@@ -65,6 +65,7 @@ import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import io.github.pixee.security.Filenames;
import io.micrometer.common.util.StringUtils;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.tags.Tag;
@@ -166,7 +167,7 @@ public class CertSignController {
Integer pageNumber = request.getPageNumber() != null ? (request.getPageNumber() - 1) : null;
Boolean showLogo = request.getShowLogo();
if (certType == null) {
if (StringUtils.isBlank(certType)) {
throw ExceptionUtils.createIllegalArgumentException(
"error.optionsNotSpecified",
"{0} options are not specified",
stirling-pdf/src/main/resources/static/js/fileInput.js
+2 -1
View File
@@ -226,7 +226,8 @@ function setupFileInput(chooser) {
try {
const { isEncrypted, requiresPassword } = await decryptFile.checkFileEncrypted(file);
if (file.type === 'application/pdf' && isEncrypted) {
if (file.type === 'application/pdf' && isEncrypted &&
!window.location.pathname.includes('remove-password')) {
decryptedFile = await decryptFile.decryptFile(file, requiresPassword);
if (!decryptedFile) throw new Error('File decryption failed.');
}
stirling-pdf/src/main/resources/templates/misc/ocr-pdf.html
+1 -1
View File
@@ -65,7 +65,7 @@
<label th:text="#{ocr.selectText.10}"></label>
<select class="form-control" name="ocrType">
<option value="skip-text" th:text="#{ocr.selectText.6}"></option>
<option value="force-ocr" th:text="#{ocr.selectText.7}"></option>
<option selected value="force-ocr" th:text="#{ocr.selectText.7}"></option>
<option value="Normal" th:text="#{ocr.selectText.8}"></option>
</select>
</div>