java对象转json

所需要的jar包 jsonlib-2.2.1.jar  commons-lang-2.4.jar commons-beanutils-1.8.3.jar commons-collections-3.2.jar commons-logging-1.0.4.jar ezmorph-1.0.6.jar


package com.iman.test;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

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

public class JsonTest {
public String ObjectToJosn(){
User user = new User();
user.setAddress("郑州");
user.setAge(2);
user.setName("张三");
user.setPhone("12345667");
user.setSex("男");
JSONObject jsonObject = JSONObject.fromObject(user);
System.out.print(jsonObject.toString());
return jsonObject.toString();
}

private String ListToJson(){
List<User> list = new ArrayList<User>();
for(int i=0;i<10;i++){
User u = new User();
u.setAddress("郑州"+i);
u.setAge(i);
u.setName("张三"+i);
u.setPhone("000000"+i);
u.setSex("男");
list.add(u);
}
JSONArray jsonArray = JSONArray.fromObject(list);
System.out.println(jsonArray.toString());
return jsonArray.toString();
}

public String objectAndListToJson(){
User user = new User();
user.setAddress("郑州");
user.setAge(2);
user.setName("张三");
user.setPhone("12345667");
user.setSex("男");

List<User> list = new ArrayList<User>();
for(int i=0;i<10;i++){
User u = new User();
u.setAddress("郑州"+i);
u.setAge(i);
u.setName("张三"+i);
u.setPhone("000000"+i);
u.setSex("男");
list.add(u);
}

Map<String,Object> map = new HashMap<String,Object>();
map.put("us", user);
map.put("lis", list);
JSONObject jsonObjectFromMap = JSONObject.fromObject(map);
System.out.println(jsonObjectFromMap.toString());
return jsonObjectFromMap.toString();
}

public static void main(String[] args){
JsonTest jt = new JsonTest();
jt.ObjectToJosn();
System.out.println("**********");
jt.ListToJson();
System.out.println("**********");
jt.objectAndListToJson();
}

}