Struts中的一个简单上传图片操作

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ActionMessages msgs &＃61; new ActionMessages();
TestUploadForm upForm &＃61; (TestUploadForm)form;
String fileName &＃61; upForm.getPhoto().getFileName();//获取上传文件名称
int fileByteSize &＃61; upForm.getPhoto().getFileSize();//获取上传文件大小 -Byte

if(fileByteSize > BYTE_SIZE){//验证图片大小
  msgs.add("photoSize", new ActionMessage("error.photo_size_empty"));
  saveMessages(request, msgs);
  return new ActionForward("/html/circle/album_add.vm?sid&＃61;"&＃43;clForm.getSid(),false);
}

String fn &＃61; fileName.substring(fileName.lastIndexOf("."));
if( fn.equalsIgnoreCase(".jpg") || fn.equalsIgnoreCase(".gif")){//验证图片格式
  Calendar calendar &＃61; new GregorianCalendar();
  Date trialTime &＃61; new Date();
  calendar.setTime(trialTime);
  //使用当前时间创建保存图片的文件夹
  String timePath &＃61; calendar.get(Calendar.YEAR)&＃43;"\\"&＃43;(calendar.get(Calendar.MONTH)&＃43;1)&＃43;"\\"&＃43;calendar.get(Calendar.DAY_OF_MONTH);
  File uploadPath &＃61; new File(this.getServlet().getServletContext().getRealPath("uploads")&＃43;"\\photo\\"&＃43;timePath);
  if(!uploadPath.exists())uploadPath.mkdirs();//如果文件夹不存在创建文件夹
  //设置存放图片的绝对地址
  File upliadFile &＃61; new File(this.getServlet().getServletContext().getRealPath("uploads")&＃43;"\\circlePhoto\\"&＃43;timePath&＃43;"\\"&＃43;fileName);
  BufferedOutputStream bos &＃61; null;
  BufferedInputStream bis &＃61; null;
  try {
   bis &＃61; new BufferedInputStream(upForm.getPhoto().getInputStream());
   Image img &＃61; javax.imageio.ImageIO.read(bis);
   int photoWidth &＃61; img.getWidth(null);
   int photoHeight &＃61; img.getHeight(null);
   //图片规格不符合规范...生成略缩图
   if (photoWidth > WIDTH || photoHeight > HEIGHT) {
    BufferedImage bi &＃61; new BufferedImage(WIDTH, HEIGHT,BufferedImage.TYPE_INT_RGB);
    bi.getGraphics().drawImage(img, 0, 0, WIDTH, HEIGHT, null);
    bos &＃61; new BufferedOutputStream(new FileOutputStream(upliadFile));
    JPEGImageEncoder encoder &＃61; JPEGCodec.createJPEGEncoder(bos);
    encoder.encode(bi);
   } else {//包存原有图片大小
    BufferedImage bi &＃61; new BufferedImage(photoWidth, photoHeight,BufferedImage.TYPE_INT_RGB);
    bi.getGraphics().drawImage(img, 0, 0, photoWidth, photoHeight, null);
    bos &＃61; new BufferedOutputStream(new FileOutputStream(upliadFile));
    JPEGImageEncoder encoder &＃61; JPEGCodec.createJPEGEncoder(bos);
    encoder.encode(bi);
   }
   String path &＃61; (timePath&＃43;"\\"&＃43;fileName).replace("\\","/");

   /**
    * 最后向数据库中保存图片地址
    **/

  }catch(Exception e){
   e.printStackTrace();
  }finally{
   try{
    if (bis !&＃61; null)bis.close();
    if (bos !&＃61; null)bos.close();
   }catch(IOException e) {
    e.printStackTrace();
   }
  }
}else{
  //格式不正确
  msgs.add("photoType", new ActionMessage("error.photo_type_empty"));
  saveMessages(request, msgs);
  return new ActionForward("/html/circle/album_add.vm?sid&＃61;"&＃43;clForm.getSid(),false);
}