When viewing a large PDF document, adding navigation buttons to it is a great time-saving method that allows readers to jump to a certain page from another page easily. This article will introduce how to create a button that redirects to a special page (for example, home page, last page and next page) or a particular page (for example, page 4) in PDF using Free Spire.PDF for Java.
Import jar dependency (2 Methods)
● Download the Free Spire.PDF for Java and unzip it.Then add the Spire.Pdf.jar file to your project as dependency.
● Directly add the jar dependency to maven project by adding the following configurations to the pom.xml.
<repositories> <repository> <id>com.e-iceblue</id> <name>e-iceblue</name> <url>http://repo.e-iceblue.com/nexus/content/groups/public/</url> </repository> </repositories> <dependencies> <dependency> <groupId>e-iceblue</groupId> <artifactId>spire.pdf.free</artifactId> <version>3.9.0</version> </dependency> </dependencies> Adding Navigation Buttons
import com.spire.pdf.FileFormat; import com.spire.pdf.PdfDocument; import com.spire.pdf.PdfPageBase; import com.spire.pdf.actions.PdfActionDestination; import com.spire.pdf.actions.PdfGoToAction; import com.spire.pdf.actions.PdfNamedAction; import com.spire.pdf.fields.PdfButtonField; import com.spire.pdf.general.PdfDestination; import com.spire.pdf.graphics.PdfRGBColor; import com.spire.pdf.graphics.PdfTrueTypeFont; import java.awt.*; import java.awt.geom.Rectangle2D; public class AddNavigationButton { public static void main(String[] args) throws Exception { //create a PdfDocument object and load a sample PDF file PdfDocument doc = new PdfDocument(); doc.loadFromFile("input.pdf"); //get the last page PdfPageBase lastPage = doc.getPages().get(doc.getPages().getCount() - 1); //allow creating forms in PDF doc.setAllowCreateForm(true); //define float variables to specify the location and size of the button float x = 80; float y = 300; float width = 150; float height = 22; //create a truetype font PdfTrueTypeFont font = new PdfTrueTypeFont(new Font("Arial Unicode MS", Font.PLAIN, 13), true); //add a button that navigates to the first page PdfButtonField btn_1 = new PdfButtonField(lastPage, "btn_1"); Rectangle2D.Float rect = new Rectangle2D.Float(x, y, width, height); btn_1.setBounds(rect); btn_1.setFont(font); btn_1.setText("Return to Page 1"); btn_1.setBackColor(new PdfRGBColor(Color.ORANGE)); btn_1.setForeColor(new PdfRGBColor(Color.blue)); btn_1.setBorderColor(new PdfRGBColor(Color.blue)); PdfNamedAction namedAction = new PdfNamedAction(PdfActionDestination.FirstPage); btn_1.getActions().setMouseDown(namedAction); doc.getForm().getFields().add(btn_1); //add a button that navigates to a particular page PdfButtonField btn_2 = new PdfButtonField(lastPage, "btn_2"); rect = new Rectangle2D.Float( x, y + height + 5, width, height); btn_2.setBounds(rect); btn_2.setText("Jump to Page 4"); btn_2.setFont(font); btn_2.setBackColor(new PdfRGBColor(Color.ORANGE)); btn_2.setForeColor(new PdfRGBColor(Color.blue)); btn_2.setBorderColor(new PdfRGBColor(Color.blue)); PdfGoToAction goToAction = new PdfGoToAction(new PdfDestination(doc.getPages().get(3))); btn_2.getActions().setMouseDown(goToAction); doc.getForm().getFields().add(btn_2); //save to file doc.saveToFile("NavigationButton.pdf", FileFormat.PDF); doc.close(); } } Output
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