将JSON转换成MAP的工具类

package com.xxxx.util;import java.io.BufferedReader;import java.io.InputStream;import java.io.InputStreamReader;import java.net.URL;import java.util.ArrayList;import java.util.HashMap;import java.util.Iterator;import java.util.List;import java.util.Map;import net.sf.json.JSONArray;import net.sf.json.JSONObject;public class MapTools {       public static List<Map<String, Object>> parseJSON2List(String jsonStr){        JSONArray jsonArr = JSONArray.fromObject(jsonStr);        List<Map<String, Object>> list = new ArrayList<Map<String,Object>>();        Iterator<JSONObject> it = jsonArr.iterator();        while(it.hasNext()){            JSONObject json2 = it.next();            list.add(parseJSON2Map(json2.toString()));        }        return list;    }           public static Map<String, Object> parseJSON2Map(String jsonStr){        Map<String, Object> map = new HashMap<String, Object>();        //最外层解析        JSONObject json = JSONObject.fromObject(jsonStr);        for(Object k : json.keySet()){            Object v = json.get(k);             //如果内层还是数组的话，继续解析            if(v instanceof JSONArray){                List<Map<String, Object>> list = new ArrayList<Map<String,Object>>();                Iterator<JSONObject> it = ((JSONArray)v).iterator();                while(it.hasNext()){                    JSONObject json2 = it.next();                    list.add(parseJSON2Map(json2.toString()));                }                map.put(k.toString(), list);            } else {                map.put(k.toString(), v);            }        }        return map;    }           public static List<Map<String, Object>> getListByUrl(String url){        try {            //通过HTTP获取JSON数据            InputStream in = new URL(url).openStream();            BufferedReader reader = new BufferedReader(new InputStreamReader(in));            StringBuilder sb = new StringBuilder();            String line;            while((line=reader.readLine())!=null){                sb.append(line);            }            return parseJSON2List(sb.toString());        } catch (Exception e) {            e.PRintStackTrace();        }        return null;    }           public static Map<String, Object> getMapByUrl(String url){        try {            //通过HTTP获取JSON数据            InputStream in = new URL(url).openStream();            BufferedReader reader = new BufferedReader(new InputStreamReader(in));            StringBuilder sb = new StringBuilder();            String line;            while((line=reader.readLine())!=null){                sb.append(line);            }            return parseJSON2Map(sb.toString());        } catch (Exception e) {            e.printStackTrace();        }        return null;    }            //test    public static void main(String[] args) {        String url = "http://...";        List<Map<String,Object>> list = getListByUrl(url);        System.out.println(list);    }}