fastjson key 排序

package com.jiabing.fastjson;

import java.util.HashMap;
import java.util.Map;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.serializer.SerializerFeature;

public class TestJson {

	public static void main(String[] args) {
		Map
 
   map = new HashMap
  
   (); map.put("b", "cddd"); map.put("a", "cd"); map.put("f", "cd"); map.put("d", "cd"); String ss = JSON.toJSONString(map, SerializerFeature.MapSortField); System.out.println(ss); TestBean t = new TestBean("123", "654"); String sss = JSON.toJSONString(t, SerializerFeature.MapSortField); System.out.println(sss); } }