使用com.alibaba.fastjson.JSONObject构造一个简单的JSON数据，构造的数据类似于：
{ "data": { "jfhf": "fff", "otherData": [ { "f445": "fff", "f44": "fff", "f12": "fff" } ], "userData": { "ff": "fff", "f1f": "fff", "f2f": "fff" }, "jf43hf": "ggg", "jfh4f": "ggg" }, "userName": "lin", "password": "lin123" } 123456789101112131415161718192021
12345678910111213141516171819代码如下：
package com.test; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import com.alibaba.fastjson.JSONObject; public static void main(String[] args) { Map<String, String> param1 = new HashMap<String,String>(); String userName = "lin"; String password= "lin123"; param1.put("userName", userName); param1.put("password", password); Map<String,Object> param2 = new HashMap<String,Object>(); param2.put("jf43hf","ggg"); param2.put("jfhf","fff"); param2.put("jfh4f","ggg"); Map<String,String> param3 = new HashMap<String,String>(); param3.put("ff", "fff"); param3.put("f1f", "fff"); param3.put("f2f", "fff"); param2.put("userData", param3); Map<String,String> param4 = new HashMap<String,String>(); List<Map<String,String>> list = new ArrayList<Map<String,String>>(); List<Map<String,String>> list1 = new ArrayList<Map<String,String>>(); list1.add(param3); for(Map<String,String> m : list1){ param4.put("f12", "fff"); param4.put("f445", "fff"); param4.put("f44", "fff"); list.add(param4); } param2.put("otherData", list); JSONObject jsonObject1 = new JSONObject(); jsonObject1.put("data", param2); JSONObject jsonThree = new JSONObject(); jsonThree.putAll(param1); jsonThree.putAll(jsonObject1); System.out.println(jsonThree.toString()); } 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051第一层就简单的包含{“userName”:”lin”,”password”:”lin123”}，第二层就为data层，即为代码中的param2集合，param2这个集合放置另一列表和另一集合，并且构造出需要的json数据，大家看代码理解吧，应该挺容易的！
自：http://blog.csdn.net/u012561176/article/details/71077269
