使用POI操作PPT实例

poi读取ppt的例子，不只是读取ppt里面的文字，还要又文字的样式，布局，图片等。poi包从官网下载即可。
HSLF是POI读写PPT的API，例子见官方文档。
http://poi.apache.org/slideshow/quick-guide.html
文档格式
http://poi.apache.org/slideshow/ppt-file-format.html
操作Shape的API
http://poi.apache.org/slideshow/how-to-shapes.html

1 提取PPT文字

public class PPTReader {
   public static void main(String[] args) throws Exception {
     InputStream is = new FileInputStream(new File("2003.ppt"));
     PowerPointExtractor extractor = new PowerPointExtractor(is);
     String ppString = extractor.getText();
     System.out.println(ppString);
    }

PPT如下：

2 抽取PPT图片

   public  void findpIC()  {
       try{
            SlideShow ppt = new SlideShow(new HSLFSlideShow("2003.ppt"));
          //将所有图片提取出来保存到PictureData[]
           PictureData[] pDatas= ppt.getPictureData();
           for (int i = 0; i < pDatas.length; i++) {
            PictureData pict =pDatas[i];


           // 获得每张图片的数据
           byte[] data = pict.getData();
           //获得每张图片的类型
           int type = pict.getType();
           String ext;
           switch (type) {
           case Picture.JPEG: ext=".jpg";break;
           case Picture.PNG: ext=".png"; break;
           case Picture.WMF: ext=".wmf"; break;
           case Picture.EMF: ext=".emf"; break;
           case Picture.PICT: ext=".pict"; break; 
           default:continue;
         }

           //输出图片命名方式：pic_i_ext
           FileOutputStream out = new FileOutputStream("pic_"+i + ext);
           out.write(data);
           out.close();
         }
       }catch (IOException e) {
            // This is not a powerpoint file
           e.printStackTrace();
      }    

   }

3/ 添加一个新的图片插入到新的幻灯片中，保存

public void addSlide() throws IOException {
       SlideShow ppt = new SlideShow(new HSLFSlideShow("2003.ppt"));
       // 添加一个新的图片插入到新的幻灯片中
         int idx =ppt.addPicture(new File("cat.jpg"), Picture.JPEG);
       //在幻灯片中设置图片的大小和位置
       Picture pict = new Picture(idx);
       pict.setAnchor(new Rectangle(100,100,300,200));

       Slide slide = ppt.createSlide();
       slide.addShape(pict);

       //检索图片并将ppt保存到磁盘上
       slide = ppt.getSlides()[0];
       Shape[]sh  =slide.getShapes();
       for (int i = 0; i < sh.length; i++){
         if (sh[i] instanceof Picture){
           Picture pict1 = (Picture)sh[i];
           PictureData pictData = pict1.getPictureData();
           byte[] data = pictData.getData();
           int type = pictData.getType();
           if (type == Picture.JPEG){
             FileOutputStream out = new FileOutputStream("slide0_"+i+".jpg");
             out.write(data);
             out.close();
           } else if (type == Picture.PNG){
             FileOutputStream out = new FileOutputStream("slide0_"+i+".png");
             out.write(data);
             out.close();
           }
         }
       }
       FileOutputStream out = new FileOutputStream("slideshow.ppt");
       ppt.write(out);
       out.close();
 }

4/插入表格

 @Test
   public void createTable() throws IOException {
      //准备数据            
      String[][] data = {
       {"INPUT FILE", "NUMBER OF RECORDS"},
       {"Item File", "11,559"},
       {"Vendor File", "300"},
       {"Purchase History File", "10,000"},
       {"Total # of requisitions", "10,200,038"} };

       SlideShow ppt = new SlideShow(new HSLFSlideShow("slideshow.ppt"));
       Slide slide = ppt.createSlide();
     //创建一个表格
      Table table = new Table(5, 2);
      for (int i = 0; i < data.length; i++) {
         for (int j = 0; j < data[i].length; j++) {
           TableCell cell = table.getCell(i, j);
           cell.setText(data[i][j]);

           RichTextRun rt = cell.getTextRun().getRichTextRuns()[0];
           rt.setFontName("Arial");
           rt.setFontSize(10);

           cell.setVerticalAlignment(TextBox.AnchorMiddle);
           cell.setHorizontalAlignment(TextBox.AlignCenter);
       }
   }

   //设置表格的边距
          Line border = table.createBorder();
          border.setLineColor(Color.black);
          border.setLineWidth(1.0);
          table.setAllBorders(border);

   //第一列的宽度
          table.setColumnWidth(0, 300);
   //第二列的宽度
          table.setColumnWidth(1, 150);

          slide.addShape(table);
          table.moveTo(100, 100);
   //保存
          FileOutputStream out = new FileOutputStream("hslf-table.ppt");
          ppt.write(out);
          out.close();
}

5 去掉PPT中的形状图形和声音

public void removeShapes() throws IOException {

      SlideShow ppt = new SlideShow(new HSLFSlideShow("bullets.ppt"));
      Slide slide = ppt.createSlide();
      Shape[] shape = slide.getShapes();
      for (int i = 0; i < shape.length; i++) {
      boolean ok = slide.removeShape(shape[i]);
       if(ok){
           System.out.println("you are successful remove the shape");
       }
    }
   }

   public void retrieveSound() throws IOException {

        FileInputStream is = new FileInputStream("bullets.ppt");
        SlideShow ppt = new SlideShow(is);
        is.close();

        SoundData[] sound = ppt.getSoundData();
        for (int i = 0; i < sound.length; i++) {
       //保存.WAV格式的音乐
       if(sound[i].getSoundType().equals(".WAV")){
           FileOutputStream out = new FileOutputStream(sound[i].getSoundName());
           out.write(sound[i].getData());
           out.close();
       }
   }
   }

自己画了主要类图，不全，个人理解

输入流有SlideShow进入，输出流使用文本流写入保存修改关闭。
SlideShow指整个幻灯片，而Slide 指的是单张幻灯片。SlideMaster 是单张幻灯片的管理类。对于文本信息、超链接信息、声音修改使用TextBox、TextRun、SoundData等类对单张幻灯片进行修改。而背景修改需要使用SlideMaster类调用Fill类进行修改设置。