如何使用Apache POI API将图像添加到pptx中添加的图像占位符？

Question

我有预定义的文本和图像占位符的pptx模板，我如何从模板访问和修改这些占位符。 我可以使用POI pptx API直接添加图像和文本到幻灯片，但是如何将其添加到模板的占位符。

Answer 1

参考链接了解如何添加占位符来创建固定template--
https://support.office.com/en-us/article/Add-a-text-placeholder-with-custom-prompt-text-85048846-c08c-4b7b-8f1a-fb25469903f3

这里是解决方案---

//read all shapes i.e place holder in array. 
    XMLSlideShow ppt = new XMLSlideShow(fin); 
      XSLFSlide[] slides = ppt.getSlides(); 
      XSLFSlide slide1 =slides[0]; 
     XSLFShape shapes[]= slide1.getShapes(); 
      for(int i=0;i<shapes.length;i++){ 
       System.out.println(shapes[i].getShapeName()); 
      } 

// add text to text place holder like this. assuming at index 0 

XSLFShape title = shapes[0]; 
      XSLFTextShape textShape = (XSLFTextShape) title; 
      textShape.clearText(); 
      XSLFTextParagraph p = textShape.addNewTextParagraph(); 
      XSLFTextRun r1 = p.addNewTextRun(); 
      r1.setText("The"); 
      r1.setFontColor(Color.blue); 
      r1.setFontSize(24.); 

// replace picture text holder assuming at index2 2 and type autoshape 

      XSLFShape pic = shapes[2]; 
      java.awt.geom.Rectangle2D anchor = pic.getAnchor(); 

      byte[] pictureData = IOUtils.toByteArray(
        new FileInputStream("C:\\Users\\gm807394\\Desktop\\Koala.jpg")); 
       int idx = ppt.addPicture(pictureData, 
         XSLFPictureData.PICTURE_TYPE_PNG); 
      XSLFPictureShape picture = slide1.createPicture(idx); 
      slide1.removeShape(pic); 

      picture.setAnchor(anchor); 


    FileOutputStream fos = new FileOutputStream(path); 
      ppt.write(fos); 
      fos.close();