java解析json与map，list相互之间的转换

package com.jjinfo.action;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletResponse;

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

import org.apache.struts2.ServletActionContext;

 

public class TestAction {

 public void sendMessage(String content) throws IOException {
  HttpServletResponse response = ServletActionContext.getResponse();
  response.setCharacterEncoding("UTF-8");
  //response.setCharacterEncoding("GBK");
  response.getWriter().write(content);
 }
  private static List<Map<String, String>> jsonStringToList(String rsContent) throws Exception
     {
         JSONArray arry = JSONArray.fromObject(rsContent);

         System.out.println("json字符串内容如下");
         System.out.println(arry);
         List<Map<String, String>> rsList = new ArrayList<Map<String, String>>();
         for (int i = 0; i < arry.size(); i++)
         {
             JSONObject jsonObject = arry.getJSONObject(i);
             Map<String, String> map = new HashMap<String, String>();
             for (Iterator<?> iter = jsonObject.keys(); iter.hasNext();)
             {
                 String key = (String) iter.next();
                 String value = jsonObject.get(key).toString();
                 map.put(key, value);
             }
             rsList.add(map);
         }
         return rsList;
     }

 
 public String query() throws Exception{
  String str="";
  //获取xml,读入xml文件
  SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
  System.out.println("----start----"+sdf.format(new Date()));
        URL url;
    
        url = new URL("http://star.sgst.cn/starInfoForZSCQ.do?systemName=ZSCQ&pageNum=6");
        URLConnection uc = url.openConnection(); 
        InputStream in = uc.getInputStream();
        Reader rd = new InputStreamReader(in,"UTF-8");
        byte[] ch=new byte[1024];
        StringBuilder sb=new StringBuilder();
        int c=0;
        
        StringBuffer temp=new StringBuffer();
        while ((c = rd.read()) != -1) {
            temp.append((char) c);
        }
        in.close(); 
        str=temp.toString();
        System.out.println(temp.toString());

        System.out.println("----zhong----"+sdf.format(new Date()));
        
        
        
        List<Map<String, String>> list1 = jsonStringToList(str);
        System.out.println("json字符串成map");
        for (Map<String, String> m : list1)
        {
            System.out.println(m);
        }
       
  return null;
 }

}