Android、iOS与Servlet接口上传文件和JSON串的交互

 package etcom.servlet;

 import java.io.File;
 import java.io.IOException;
 import java.sql.Connection;
 import java.util.ArrayList;
 import java.util.List;

 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;

 import org.apache.commons.fileupload.FileItem;
 import org.apache.commons.fileupload.disk.DiskFileItemFactory;
 import org.apache.commons.fileupload.servlet.ServletFileUpload;
 import org.apache.commons.lang.StringUtils;
 import org.json.JSONArray;
 import org.json.JSONObject;

 import etcom.servlet.DBUtil;
 import etcom.servlet.SqlActuator;

 @SuppressWarnings("serial")
 public class Execute extends HttpServlet {

     public Execute() {
         super();
     }

     public void destroy() {
         super.destroy(); // Just puts "destroy" string in log
         // Put your code here
     }

     public void doGet(HttpServletRequest request, HttpServletResponse response)
             throws ServletException, IOException {
         request.setCharacterEncoding("utf-8");
 //        String tr = IoToJsonUtils.getIoToJson(request, "UTF-8");
 //        System.out.println(tr);
         String vcRes = "";
         String detectTaskJOSN = "";
         List<String> sqls = new ArrayList<String>();
         Connection conn = DBUtil.getConnection();
         SqlActuator sa = new SqlActuator(conn);
         try{
             String basePath = request.getSession().getServletContext().getRealPath("/");
             String filePath = "../images/androidFiles/";
             String filename = "";
             File file0 =new File(basePath + filePath);
             if(!file0.exists()&&!file0.isDirectory())file0.mkdirs();
             DiskFileItemFactory factory = new DiskFileItemFactory();
             factory.setRepository(file0);
             //设置 缓存的大小
             factory.setSizeThreshold(1024*1024);
             //文件上传处理
             ServletFileUpload upload = new ServletFileUpload(factory);
             String encoding = request.getCharacterEncoding();
             upload.setHeaderEncoding(encoding);
             @SuppressWarnings("unchecked")
             List<FileItem> list = (List<FileItem>)upload.parseRequest(request);
             for(FileItem item : list){
                 //获取属性名字
                 String name = item.getFieldName();
                 //如果获取的 表单信息是普通的 文本 信息
                 if(item.isFormField()&&"detectTaskJOSN".equals(name)){
                     //获取用户具体输入的字符串,因为表单提交过来的是 字符串类型的
                     detectTaskJOSN = new String(item.getString(encoding));
                     System.out.println("detectTaskJOSN的值:"+detectTaskJOSN);
                 }else{
                     if(StringUtils.isNotEmpty(name)){
                         //获取路径名
                         String value = item.getName();
                         //索引到最后一个反斜杠
                         int start = value.lastIndexOf("\\");
                         //截取 上传文件的 字符串名字，加1是 去掉反斜杠，
                         filename = value.substring(start+1);
                         File file1 =new File(basePath + filePath + filename);
                         if(file1.exists())file1.delete();
                         //写到磁盘上
                         item.write(file1);//第三方提供的
                         System.out.println("上传成功："+filename);
                     }
                 }
             }
             JSONObject joTask = new JSONObject(detectTaskJOSN);
             String _vcTaskNo = joTask.get("vcTaskNo").toString();
             String _vcUserId = joTask.get("vcUserId").toString();
             String _vcEquipCode = joTask.get("vcEquipCode").toString();
             String _vcEquipType = joTask.get("vcEquipType").toString();
             String _vcStatus = joTask.get("vcStatus").toString();
             String _vcMemo = joTask.get("vcMemo").toString();
             String _dtScan = joTask.get("dtScan").toString();
             String _dtHandle = joTask.get("dtHandle").toString();
             String _vcHandleFlag = joTask.get("vcHandleFlag").toString();
             String _vcHandleMemo = joTask.get("vcHandleMemo").toString();
             String _vcHandler = joTask.get("vcHandler").toString();
             String _nTypeId = joTask.get("nTypeId").toString();
             String _nOid = joTask.get("nOid").toString();
             String _nCodeId = joTask.get("nCodeId").toString();
             String sql = " exec proc_detecttask_add '" + _vcTaskNo + "','" +
                     _vcUserId + "','" + _vcEquipCode + "','" + _vcEquipType +
                     "','" + _vcStatus + "','" + _vcMemo + "','" +
                     filename + "','" + _dtScan + "','" + _dtHandle +
                     "','" + _vcHandleMemo + "'," + _vcHandleFlag + ",'" +
                     _vcHandler + "'," + _nTypeId + "," + _nOid + "," +
                     _nCodeId;
             System.out.println(sql);
             sqls.add(sql);

             JSONArray jaDicts = new JSONArray(joTask.get("jaDicts").toString());
             for(int idx = 0; idx < jaDicts.length(); idx++){
                 JSONObject joDict = (JSONObject)jaDicts.get(idx);
                 String _vcDetectInfo = joDict.get("vcDetectInfo").toString();
                 String _vcDetectValue = joDict.get("vcDetectValue").toString();
                 String _vcUnit = joDict.get("vcUnit").toString();
                 sql = "Insert Into T_DetectTask_Detail(vcTaskNo,vcDetectInfo,vcDetectValue,vcUnit) values ('" +
                   _vcTaskNo +
                   "','" +
                   _vcDetectInfo +
                   "','" + _vcDetectValue + "','" + _vcUnit + "')";
                 System.out.println(sql);
                 sqls.add(sql);
             }
             sa.batchExec(sqls);
             vcRes = "{\"vcRes\":\"success\"}";
         }catch(Exception e){
             e.printStackTrace();
             vcRes = "{\"vcRes\":\"fail\"}";
         }finally{
             DBUtil.close(null, null, conn);
             response.getWriter().println(vcRes);
         }
     }

     public void doPost(HttpServletRequest request, HttpServletResponse response)
             throws ServletException, IOException {

         doGet(request, response);
     }

     public void init() throws ServletException {
         // Put your code here
     }
 }