Hyperlinks to other pages in asPose PDF Java (not legacy)

Aspose.PDF Product Family
1
I need to create text "Chapter1" and on click go to page 2 in AsPose PDF for Java

How can I do that in com.aspose.pdf (not legacy)?

Is it supported? Examples?
2

Hi Alex,

Thanks for contacting support.

Please try using the following code snippet to accomplish your requirement.

Java

//open document
Document document = new Document("c:/pdftest/facture.pdf");

//create link
Page page = document.getPages().get_Item(1);
LinkAnnotation link = new LinkAnnotation(page, new com.aspose.pdf.Rectangle(100, 100, 150, 150));

//link for second page of PDF
link.setDestination(new com.aspose.pdf.XYZExplicitDestination(2, 100, 100, 1));
page.getAnnotations().add(link);

//save updated document
document.save("c:/pdftest/PDFWithHyperlink+output.pdf");
3

Is it possible to do it without rectangles and XYZ coordinates. I only need a simple text(!!!) element on the page to be clickable. Legacy classes provide very good examples. I do not need to create any annotations or rectangles, just table on contents. When a person clicks on table of contents element “Chapter 2 …10” I would like to go to page 10.

4

Hi Alex,

Well in order to place the hyperlink inside PDF file, you need to specify the location (region) where link should be placed. Furthermore, in order to place the link inside PDF, you need to place LinkAnnotation inside PDF file. You may consider using the following code snippet.

Java

com.aspose.pdf.facades.PdfContentEditor editor = new com.aspose.pdf.facades.PdfContentEditor();
// open source PDF file
editor.bindPdf("c:/pdftest/Doc+3.pdf");

java.awt.Rectangle rect= new java.awt.Rectangle(50,50, 200, 200);
java.awt.Color clr = new java.awt.Color(255,255,255);

// create link towards second page of PDF file
editor.createLocalLink(rect, 2, 1, clr);

editor.save("c:/pdftest/LocalinkTest.pdf");
5

Hi Alex,

Adding more to my previous comments, in case you need to create a TOC in an existing PDF file, please try using the code snippet shared below. When using this approach, the LinkAnnotations are not placed, and this approach is much closer to the aspose.pdf package approach.

However, when using the code snippet below, I have observed that the formatting of the TOC is not correct in the resultant PDF file. For the sake of correction, I have logged it in our issue tracking system as PDFNEWJAVA-34197. We will investigate this issue in detail and will keep you updated on the status of a correction. We are sorry for this inconvenience.

[Java]

// Load an existing PDF file
com.aspose.pdf.Document
doc = new
com.aspose.pdf.Document("c:/pdftest/emd-2012-014876.pdf");

// Get access to the first page of the PDF file
com.aspose.pdf.Page
tocPage = doc.getPages().insert(1);

// Create an object to represent TOC information
com.aspose.pdf.TocInfo
tocInfo = new
com.aspose.pdf.TocInfo();
com.aspose.pdf.TextFragment
title = new
com.aspose.pdf.TextFragment("Table Of
Contents");
title.getTextState().setFontSize(20);
title.getTextState().setFontSize(com.aspose.pdf.FontStyles.Bold);

// Set the title for TOC
tocInfo.setTitle(title);
tocPage.setTocInfo(tocInfo);

// Create string objects which will be used as TOC elements
String[] titles = new String[4];
titles[0] = "First page";
titles[1] = "Second page";
titles[2] = "Third page";
titles[3] = "Fourth page";

for (int i = 0; i < 4; i++) {

    // Create Heading object
    com.aspose.pdf.Heading heading2 = new com.aspose.pdf.Heading(1);
    com.aspose.pdf.TextSegment segment2 = new
    com.aspose.pdf.TextSegment();
    heading2.setTocPage(tocPage);
    heading2.getSegments().add(segment2);

    // Specify the destination page for the heading object
    heading2.setDestinationPage(doc.getPages().get_Item(i + 2));

    // Destination page
    heading2.setTop(doc.getPages().get_Item(i + 2).getRect().getHeight());

    // Destination coordinate
    segment2.setText(titles[i]);

    // Add heading to page containing TOC
    tocPage.getParagraphs().add(heading2);
}

// Save the updated document
doc.save("c:/pdftest/TOC_Output_Java.pdf");
6

The issues you have found earlier (filed as PDFNEWJAVA-34197) have been fixed in Aspose.Pdf for Java 10.0.0.

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