publicvoid doPost(HttpServletRequest request, HttpServletResponse response)
              throws ServletException, IOException {
            String temp=request.getSession().getServletContext().getRealPath("/")+"temp";   //临时目录
            System.out.println("temp="+temp);
            String loadpath=request.getSession().getServletContext().getRealPath("/")+"Image"; //上传文件存放目录 
            System.out.println("loadpath="+loadpath); 
            DiskFileUpload fu =new DiskFileUpload();
            fu.setSizeMax(1*1024*1024);   // 设置允许用户上传文件大小,单位:字节
            fu.setSizeThreshold(4096);   // 设置最多只允许在内存中存储的数据,单位:字节
            fu.setRepositoryPath(temp); // 设置一旦文件大小超过getSizeThreshold()的值时数据存放在硬盘的目录
                       //开始读取上传信息
            int index=0;
            List fileItems =null;
            try { 
                    fileItems = fu.parseRequest(request);   
                    System.out.println("fileItems="+fileItems); 
                  } catch (Exception e) {   
                     e.printStackTrace();                
                 }
           Iterator iter = fileItems.iterator(); // 依次处理每个上传的文件 
             while (iter.hasNext())
                {    
                   FileItem item = (FileItem)iter.next();// 忽略其他不是文件域的所有表单信息
                   if (!item.isFormField())
                   {     
                     String name = item.getName();//获取上传文件名,包括路径      
                     name=name.substring(name.lastIndexOf("\\")+1);//从全路径中提取文件名
                     long size = item.getSize();
                     if((name==null||name.equals("")) && size==0) 
                         continue; 
                      int point = name.indexOf("."); 
                      name=(new Date()).getTime()+name.substring(point,name.length())+index; 
                      index++; 
                      File fNew=new File(loadpath, name);  
                       try {
                       item.write(fNew);
                       } catch (Exception e)
                       {
                          // TODO Auto-generated catch block             
                            e.printStackTrace();   
                         }      
                    }         
                    else//取出不是文件域的所有表单信息              
                    {
                    String fieldvalue = item.getString();             //如果包含中文应写为：(转为UTF-8编码)      
                    //String fieldvalue = new String(item.getString().getBytes(),"UTF-8");   
                    }    
              }   
              String text1="11";       
     response.sendRedirect("result.jsp?text1="+ text1);    
 }  

publicclass PhotoUpload extends Activity {
     private String newName ="image.jpg";
     private String uploadFile ="/sdcard/image.JPG"; 
     private String actionUrl ="http://192.168.0.71:8086/HelloWord/myForm";
     private TextView mText1;
     private TextView mText2;
     private Button mButton;
     @Override
       publicvoid onCreate(Bundle savedInstanceState)
       {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.photo_upload);
         mText1 = (TextView) findViewById(R.id.myText2);
         //"文件路径：\n"+
         mText1.setText(uploadFile);
         mText2 = (TextView) findViewById(R.id.myText3);
         //"上传网址：\n"+
         mText2.setText(actionUrl);
         /* 设置mButton的onClick事件处理 */
         mButton = (Button) findViewById(R.id.myButton);
         mButton.setOnClickListener(new View.OnClickListener()
         {           
             publicvoid onClick(View v)
           {             
uploadFile();
           }
         });
       } 
      /* 上传文件至Server的方法 */
       privatevoid uploadFile()
       {         
String end ="\r\n";
         String twoHyphens ="--";
         String boundary ="*****";
         try         {
           URL url =new URL(actionUrl);
           HttpURLConnection con=(HttpURLConnection)url.openConnection();
           /* 允许Input、Output，不使用Cache */
           con.setDoInput(true);
           con.setDoOutput(true);
           con.setUseCaches(false);
           /* 设置传送的method=POST */
           con.setRequestMethod("POST");
           /* setRequestProperty */
           con.setRequestProperty("Connection", "Keep-Alive");
           con.setRequestProperty("Charset", "UTF-8");
           con.setRequestProperty("Content-Type",
                              "multipart/form-data;boundary="+boundary);           /* 设置DataOutputStream */
           DataOutputStream ds =new DataOutputStream(con.getOutputStream());
           ds.writeBytes(twoHyphens + boundary + end);
           ds.writeBytes("Content-Disposition: form-data; "+
                         "name=\"file1\";filename=\""+
                         newName +"\""+ end);
                   ds.writeBytes(end);             /* 取得文件的FileInputStream */
           FileInputStream fStream =new FileInputStream(uploadFile);           /* 设置每次写入1024bytes */
           int bufferSize =1024;
           byte[] buffer =newbyte[bufferSize];
           int length =-1;           /* 从文件读取数据至缓冲区 */
           while((length = fStream.read(buffer)) !=-1)
           {             /* 将资料写入DataOutputStream中 */             
　　　　　　　　ds.write(buffer, 0, length);
           }
           ds.writeBytes(end);
           ds.writeBytes(twoHyphens + boundary + twoHyphens + end);
           /* close streams */
           fStream.close();
           ds.flush();           /* 取得Response内容 */
           InputStream is = con.getInputStream();
           int ch;
           StringBuffer b =new StringBuffer();
           while( ( ch = is.read() ) !=-1 )
           {
             b.append( (char)ch );
           }           /* 将Response显示于Dialog */
           showDialog("上传成功"+b.toString().trim());           /* 关闭DataOutputStream */
           ds.close();
         }
         catch(Exception e)
         {           showDialog("上传失败"+e);
         }
       }
       /* 显示Dialog的method */
       privatevoid showDialog(String mess)       {
         new AlertDialog.Builder(PhotoUpload.this).setTitle("Message")
          .setMessage(mess)
          .setNegativeButton("确定",new DialogInterface.OnClickListener()
          {
            publicvoid onClick(DialogInterface dialog, int which)
            {
                                  }
           })
          .show();
       }
     }