java json技术 json javabean

要实现javabean和json字符串互转，需要json的jar包

jar包lia

package com.it;

import com.alibaba.fastjson.JSONObject;

public class TestJson {

	public static void main(String[] args) {
		// json格式的字符串转javabean
		String jsonString = "{\"username\":\"张三\",\"password\":\"123\",\"sex\":\"男\"}";
		JSONObject jbo = JSONObject.parseObject(jsonString);
		Person req = (Person) JSONObject.toJavaObject(jbo, Person.class);
		String password = req.getPassword();
		System.out.println(password);
		// javabean转json格式的字符串
		Person person = new Person();
		person.setUsername("李四");
		person.setPassword("456");
		person.setSex("男");
		Object jsonData = JSONObject.toJSON(person);
		System.out.println(jsonData.toString());

	}

}