Json工具类

package com.angular.base.util.jsontool;



import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.apache.commons.collections.map.ListOrderedMap;
import org.apache.commons.lang.StringUtils;
import org.codehaus.jackson.map.ObjectMapper;

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

public class JsonTools {

   /**
* 
* json转换list.
* <br>详细说明
* @param jsonStr json字符串
* @return
* @return List<Map<String,Object>> list
* @throws
* @author slj
* @date 2013年12月24日 下午1:08:03
*/

    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;
    }

/**
* 
* json转换map.
* <br>详细说明
* @param jsonStr json字符串
* @return
* @return Map<String,Object> 集合
* @throws
* @author slj
*/
    public static Map<String, Object> parseJSON2Map(String jsonStr){
        ListOrderedMap map = new ListOrderedMap();
        //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;
    }

 
//ajax跨域请求的callback
public static String callback(String callback, String jsonStr) {
        
        if (StringUtils.isBlank(callback)) {
            
            return jsonStr;
        }
        return callback.trim() + "(" + jsonStr + ")";
    }

//json数据格式的转为json字符串 供ajax数据结构
public static String ObjectToJson(Object object) throws Exception{    
    ObjectMapper mapper = new ObjectMapper();
    return mapper.writeValueAsString(object);
}
}

jar包请自行下载