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anshul__
New Participant
May 21, 2023
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Create Pdf in AEM DAM Programatically

  • May 21, 2023
  • 2 replies
  • 2360 views

I want to create a pdf file based on inputs from user and store the file in DAM. I tried creating a pdf file using this code :

 

InputStream stream = new ByteArrayInputStream(attachmentData.getBytes(StandardCharsets.UTF_8));
final ValueFactory valueFactory = session.getValueFactory();
final Binary binary = valueFactory.createBinary(stream);
assetManager.createOrReplaceAsset(path, binary, "application/pdf", true);

 

but the pdf file is not created properly and do not show data.

 

Can anyone help me on this?

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Best answer by MayurSatav

Hi @anshul__ ,

The code you provided seems to be creating an asset in the DAM with a PDF binary. However, it's important to note that simply creating an asset with a binary stream may not result in a valid PDF file.

To create a PDF file with proper content, you typically need to use a library or framework that supports generating PDFs, such as Apache PDFBox or iText. These libraries provide APIs to create and manipulate PDF documents programmatically.

Here's an example using Apache PDFBox to generate a PDF with content and store it in the DAM:

 

import org.apache.pdfbox.pdmodel.PDDocument; import org.apache.pdfbox.pdmodel.PDPage; import org.apache.pdfbox.pdmodel.PDPageContentStream; import org.apache.sling.api.resource.ResourceResolver; import org.apache.sling.api.resource.ResourceResolverFactory; import javax.jcr.Node; import javax.jcr.Session; import java.io.ByteArrayOutputStream; import java.io.IOException; // Obtain a ResourceResolver instance using the ResourceResolverFactory ResourceResolverFactory resolverFactory = ... // Obtain the ResourceResolverFactory instance ResourceResolver resolver = resolverFactory.getServiceResourceResolver(null); // Create a new PDF document PDDocument document = new PDDocument(); // Create a new page PDPage page = new PDPage(); document.addPage(page); // Create a content stream for the page PDPageContentStream contentStream = new PDPageContentStream(document, page); // Write some text to the content stream contentStream.beginText(); contentStream.setFont(PDType1Font.HELVETICA_BOLD, 12); contentStream.newLineAtOffset(100, 700); contentStream.showText("Hello, World!"); contentStream.endText(); contentStream.close(); // Save the PDF document to a ByteArrayOutputStream ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); document.save(outputStream); document.close(); // Convert the ByteArrayOutputStream to a Binary Binary binary = valueFactory.createBinary(new ByteArrayInputStream(outputStream.toByteArray())); // Specify the DAM path where you want to store the PDF String damPath = "/content/dam/mypath/mypdf.pdf"; // Adapt the ResourceResolver to a Session Session session = resolver.adaptTo(Session.class); // Create or replace the asset in the DAM AssetManager assetManager = resolver.adaptTo(AssetManager.class); Asset asset = assetManager.createOrReplaceAsset(damPath, binary, "application/pdf", true); // Commit the changes to the session session.save(); session.logout();

 

This code demonstrates how to create a PDF document using Apache PDFBox, add content to it, convert it to a Binary, and then store it as an asset in the DAM. You'll need to adjust the DAM path and handle exceptions appropriately in your implementation.

Remember to include the necessary dependencies for Apache PDFBox in your project's build configuration.

 

https://pdfbox.apache.org/1.8/cookbook/documentcreation.html

 

2 replies

K
kr_Saurabh1707
New Participant
February 14, 2024

I have done using iText as PDF Box have more complexity but good Controls for drafting the PDF.

import com.day.cq.dam.api.Asset; import com.day.cq.dam.api.AssetManager; import com.itextpdf.text.Document; import com.itextpdf.text.Font; import com.itextpdf.text.Paragraph; import com.itextpdf.text.pdf.PdfWriter; import javax.jcr.*; import java.io.*; ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); Document doc = new Document(); Font boldFont = new Font(); boldFont.setStyle(Font.BOLD); PdfWriter writer = PdfWriter.getInstance(doc, outputStream); doc.open(); doc.add(new Paragraph(" Hello World! ")); doc.add(new Paragraph(" "); doc.add(new Paragraph(" End of the paragraph ")); doc.close(); outputStream.close(); session = resourceResolver.adaptTo(Session.class); ValueFactory valueFactory = session.getValueFactory(); Binary binary = valueFactory.createBinary(new ByteArrayInputStream(outputStream.toByteArray())); String damPath = "/content/dam/newPDF.pdf"; AssetManager assetManager = resourceResolver.adaptTo(AssetManager.class); Asset asset = assetManager.createOrUpdateAsset(damPath, binary, "application/pdf", true); session.save();
MayurSatav
MayurSatavAccepted solution
New Participant
May 22, 2023

Hi @anshul__ ,

The code you provided seems to be creating an asset in the DAM with a PDF binary. However, it's important to note that simply creating an asset with a binary stream may not result in a valid PDF file.

To create a PDF file with proper content, you typically need to use a library or framework that supports generating PDFs, such as Apache PDFBox or iText. These libraries provide APIs to create and manipulate PDF documents programmatically.

Here's an example using Apache PDFBox to generate a PDF with content and store it in the DAM:

 

import org.apache.pdfbox.pdmodel.PDDocument; import org.apache.pdfbox.pdmodel.PDPage; import org.apache.pdfbox.pdmodel.PDPageContentStream; import org.apache.sling.api.resource.ResourceResolver; import org.apache.sling.api.resource.ResourceResolverFactory; import javax.jcr.Node; import javax.jcr.Session; import java.io.ByteArrayOutputStream; import java.io.IOException; // Obtain a ResourceResolver instance using the ResourceResolverFactory ResourceResolverFactory resolverFactory = ... // Obtain the ResourceResolverFactory instance ResourceResolver resolver = resolverFactory.getServiceResourceResolver(null); // Create a new PDF document PDDocument document = new PDDocument(); // Create a new page PDPage page = new PDPage(); document.addPage(page); // Create a content stream for the page PDPageContentStream contentStream = new PDPageContentStream(document, page); // Write some text to the content stream contentStream.beginText(); contentStream.setFont(PDType1Font.HELVETICA_BOLD, 12); contentStream.newLineAtOffset(100, 700); contentStream.showText("Hello, World!"); contentStream.endText(); contentStream.close(); // Save the PDF document to a ByteArrayOutputStream ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); document.save(outputStream); document.close(); // Convert the ByteArrayOutputStream to a Binary Binary binary = valueFactory.createBinary(new ByteArrayInputStream(outputStream.toByteArray())); // Specify the DAM path where you want to store the PDF String damPath = "/content/dam/mypath/mypdf.pdf"; // Adapt the ResourceResolver to a Session Session session = resolver.adaptTo(Session.class); // Create or replace the asset in the DAM AssetManager assetManager = resolver.adaptTo(AssetManager.class); Asset asset = assetManager.createOrReplaceAsset(damPath, binary, "application/pdf", true); // Commit the changes to the session session.save(); session.logout();

 

This code demonstrates how to create a PDF document using Apache PDFBox, add content to it, convert it to a Binary, and then store it as an asset in the DAM. You'll need to adjust the DAM path and handle exceptions appropriately in your implementation.

Remember to include the necessary dependencies for Apache PDFBox in your project's build configuration.

 

https://pdfbox.apache.org/1.8/cookbook/documentcreation.html

 

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