DGNum/Stirling-PDF
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Closes #359 (#1047)

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Dimitris Kaitantzidis 2024-04-08 23:23:03 +03:00 committed by GitHub
parent 3868b4eca2
commit 471865e4a3
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3 changed files with 54 additions and 4 deletions
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6
src/main/java/stirling/software/SPDF/controller/api/SplitPDFController.java
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@ -27,7 +27,9 @@ import io.github.pixee.security.Filenames;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.tags.Tag;
import stirling.software.SPDF.model.PdfMetadata;
import stirling.software.SPDF.model.api.PDFWithPageNums;
import stirling.software.SPDF.utils.PdfUtils;
import stirling.software.SPDF.utils.WebResponseUtils;
@RestController
@ -49,6 +51,7 @@ public class SplitPDFController {
// open the pdf document
PDDocument document = Loader.loadPDF(file.getBytes());
PdfMetadata metadata = PdfUtils.extractMetadataFromPdf(document);
int totalPages = document.getNumberOfPages();
List<Integer> pageNumbers = request.getPageNumbersList(document, false);
System.out.println(
@ -75,6 +78,9 @@ public class SplitPDFController {
}
previousPageNumber = splitPoint + 1;
// Transfer metadata to split pdf
PdfUtils.setMetadataToPdf(splitDocument, metadata);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
splitDocument.save(baos);

19
src/main/java/stirling/software/SPDF/model/PdfMetadata.java Normal file
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@ -0,0 +1,19 @@
package stirling.software.SPDF.model;
import java.util.Calendar;
import lombok.Builder;
import lombok.Data;
@Data
@Builder
public class PdfMetadata {
private String author;
private String producer;
private String title;
private String creator;
private String subject;
private String keywords;
private Calendar creationDate;
private Calendar modificationDate;
}

33
src/main/java/stirling/software/SPDF/utils/PdfUtils.java
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@ -19,11 +19,8 @@ import javax.imageio.stream.ImageOutputStream;
import org.apache.pdfbox.Loader;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.PDPageContentStream;
import org.apache.pdfbox.pdmodel.*;
import org.apache.pdfbox.pdmodel.PDPageContentStream.AppendMode;
import org.apache.pdfbox.pdmodel.PDResources;
import org.apache.pdfbox.pdmodel.common.PDRectangle;
import org.apache.pdfbox.pdmodel.graphics.PDXObject;
import org.apache.pdfbox.pdmodel.graphics.form.PDFormXObject;
@ -39,6 +36,8 @@ import org.springframework.web.multipart.MultipartFile;
import io.github.pixee.security.Filenames;
import stirling.software.SPDF.model.PdfMetadata;
public class PdfUtils {
private static final Logger logger = LoggerFactory.getLogger(PdfUtils.class);
@ -421,4 +420,30 @@ public class PdfUtils {
logger.info("PDF successfully saved to byte array");
return baos.toByteArray();
}
public static PdfMetadata extractMetadataFromPdf(PDDocument pdf) {
return PdfMetadata.builder()
.author(pdf.getDocumentInformation().getAuthor())
.producer(pdf.getDocumentInformation().getProducer())
.title(pdf.getDocumentInformation().getTitle())
.creator(pdf.getDocumentInformation().getCreator())
.subject(pdf.getDocumentInformation().getSubject())
.keywords(pdf.getDocumentInformation().getKeywords())
.creationDate(pdf.getDocumentInformation().getCreationDate())
.modificationDate(pdf.getDocumentInformation().getModificationDate())
.build();
}
public static PDDocument setMetadataToPdf(PDDocument pdf, PdfMetadata pdfMetadata) {
pdf.getDocumentInformation().setAuthor(pdfMetadata.getAuthor());
pdf.getDocumentInformation().setProducer(pdfMetadata.getProducer());
pdf.getDocumentInformation().setTitle(pdfMetadata.getTitle());
pdf.getDocumentInformation().setCreator(pdfMetadata.getCreator());
pdf.getDocumentInformation().setSubject(pdfMetadata.getSubject());
pdf.getDocumentInformation().setKeywords(pdfMetadata.getKeywords());
pdf.getDocumentInformation().setCreationDate(pdfMetadata.getCreationDate());
pdf.getDocumentInformation().setModificationDate(pdfMetadata.getModificationDate());
return pdf;
}
}