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
    }
}