These days, PDF is frequently used for report generation like to generate In order to make the java program interact with files be it of any type word, excel openCV Apache framework comes into play. External Files Required for Build this Code. The first requirement is to import the following libraries files
- Pdfbox-xxx.jar
- org.apache.commons.logging-xxx.jar
Algorithm:
- Linking PDF document and java program
- Create PDDocument object
- Create PDPage
- Add page to document objects
- Create FileInputStream object for image.
- Create PDJpeg object by passing PDDocument object and FIleInputStream as its constructor
- Invoke drawXObject() object and specify coordinates with width and height to draw the image onto PDF file.
- Close the stream, saving the document object, and close the document.
Implementation: Considering an input image sample to illustrate the working of a program where in order to illustrate the working PDF document before is as follows:
Processing with the usage of java program to insert text in the above PDF document
Java
// Adding Image in Existing PDF using Java // Importing openCV librariesimport java.io.File;import org.apache.pdfbox.pdmodel.PDDocument;import org.apache.pdfbox.pdmodel.PDPage;import org.apache.pdfbox.pdmodel.graphics.image PDImageXObject;import org.apache.pdfbox.pdmodel.PDPageContentStream;import java.io.IOException; class GFG { // Main driver method public static void main(String[] args) throws IOException { // Loading an already existing pdf document File file = new File("D:\\javong\\pdf1.pdf"); PDDocument doc = new PDDocument.load(file); // Retrieve the page PDPage page = doc.getPage(0); // Creating Object of PDImageXObject for selecting // Image and provide the path of file in argument PDImageXObject pdfimg = PDImageXImage.createFromFile( "D:\\Images\\chloro.jpg", doc); // Creating the PDPageContentStream Object // for Inserting Image PDPageContentStream image = new PDPageContentStream(doc, page); // set the Image inside the Page image.drawImage(pdfImage, 55, 370); System.out.println("Image Inserted"); // Closing the page of PDF by closing // PDPageContentStream Object // && Saving the Document image.close(); doc.save("D:\\javong\\pdf1.pdf"); // Closing the Document doc.close(); }} |
Output: Text inserted in the same input image.
