如何在PdfBox 2.0.3中顯示圖像

Question

有人可以給我一個關於如何使用Apache PDFBox 2.0.3在pdf上顯示圖像的例子。

在此先感謝

Answer 1

你可能想看看pdfbox examples directory in the Apache SVN repository，特別是適當命名的示例類AddImageToPDF這個關鍵的方法：

public void createPDFFromImage(String inputFile, String imagePath, String outputFile) 
     throws IOException 
{ 
    // the document 
    PDDocument doc = null; 
    try 
    { 
     doc = PDDocument.load(new File(inputFile)); 

     //we will add the image to the first page. 
     PDPage page = doc.getPage(0); 

     // createFromFile is the easiest way with an image file 
     // if you already have the image in a BufferedImage, 
     // call LosslessFactory.createFromImage() instead 
     PDImageXObject pdImage = PDImageXObject.createFromFile(imagePath, doc); 
     PDPageContentStream contentStream = new PDPageContentStream(doc, page, AppendMode.APPEND, true); 

     // contentStream.drawImage(ximage, 20, 20); 
     // better method inspired by http://stackoverflow.com/a/22318681/535646 
     // reduce this value if the image is too large 
     float scale = 1f; 
     contentStream.drawImage(pdImage, 20, 20, pdImage.getWidth()*scale, pdImage.getHeight()*scale); 

     contentStream.close(); 
     doc.save(outputFile); 
    } 
    finally 
    { 
     if(doc != null) 
     { 
      doc.close(); 
     } 
    } 
}