阿里fastjson的使用实例

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fastjson的maven依赖配置：

        <dependency>
           <groupId>com.alibaba</groupId>
           <artifactId>fastjson</artifactId>
           <version>1.1.41</version>
       </dependency>

wiki地址：https://github.com/alibaba/fastjson/wiki

package com.feng.json;

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

import com.alibaba.fastjson.JSON;

public class JsonDemo {

   public static void main(String[] args) {
       Person person = new Person("fengtao", 20, "18911252059");
       // 1、将javabean转化成json字符串
       String jsonString = JSON.toJSONString(person);
       System.out.println(jsonString);
       // 2、将json字符串转化成javabean对象
       person = JSON.parseObject(jsonString, Person.class);
       System.out.println(person.getName() + "==>" + person.getAge() + "==>"
               + person.getMoblie());
       // 3、奖List<JavaBean>对象转化json字符串
       Person per1 = new Person("feng1", 30, "123456");
       Person per2 = new Person("feng2", 23, "23566");
       Person per3 = new Person("feng3", 22, "34567");
       List<Person> pers = new ArrayList<Person>();
       pers.add(per1);
       pers.add(per2);
       pers.add(per3);
       String jsonStrs = JSON.toJSONString(pers);
       System.out.println(jsonStrs);

       // 4、将List<String>转化成json字符串
       List<String> list = new ArrayList<String>();
       list.add("string1");
       list.add("string2");
       list.add("string3");
       String listStr = JSON.toJSONString(list);
       System.out.println(listStr);

       // 5、将List<Map<String,Object>>对象转化json

       Map<String, Object> map1 = new HashMap<String, Object>();
       map1.put("key1", "value1");
       map1.put("key2", "value2");
       map1.put("key3", "value3");
       Map<String, Object> map2 = new HashMap<String, Object>();
       map2.put("key1", "value1");
       map2.put("key2", "value2");
       map2.put("key3", "value3");
       List<Map<String, Object>> maplist = new ArrayList<Map<String, Object>>();
       maplist.add(map1);
       maplist.add(map2);
       String mapStr = JSON.toJSONString(maplist);
       System.out.println(mapStr);

   }

}

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