自定义封装JSON操作的类.txt

package com.util;
 
 import java.util.List;
 import java.util.Map;
 
 import net.sf.json.JSONArray;
 import net.sf.json.JSONObject;
 
 public class JsonHelper {
     //从普通的Bean转换为字符串
     public static String getJson(Object o){
         JSONObject jo=JSONObject.fromObject(o);
         return jo.toString();
     }
     //从Java的列表转换为字符串
     public static String getJson(List list){
         JSONArray ja=JSONArray.fromObject(list);
         return ja.toString();
     }
     //从Java对象数组转换为字符串
     public static String getJson(Object[] arry){
         JSONArray ja=JSONArray.fromObject(arry);
         return ja.toString();
     }
     //从json格式的字符串转换为Map对象
     public static Map getObject(String s){
         return     JSONObject.fromObject(s);
     }
     //从json格式的字符串转换为List数组
     public static List getArray(String s){
         return JSONArray.fromObject(s);
     }
     //从json格式的字符串转换为某个Bean
     public static Object getObject(String s,Class cls){
         JSONObject jo=JSONObject.fromObject(s);
         return JSONObject.toBean(jo, cls);
     }
     //从json格式的字符串转换为某类对象的数组
     public static Object getArray(String s,Class cls){
         JSONArray ja=JSONArray.fromObject(s);
         return JSONArray.toArray(ja, cls);
     }
 }