Java构造和解析Json数据-fastjson_java fastjson构造

阿里巴巴fastjson介绍

1.maven引用

    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>fastjson</artifactId>
        <version>1.1.39</version>
        <scope>compile</scope>
    </dependency>
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2.代码实类

package com.cjm.mvnbook.test5;

import java.util.ArrayList;
import java.util.List;

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.cjm.mvnbook.model.Student;



public class FastJsonTest {

    public static void main(String[] args) {

        String a1 = BeanToJson();
        JsonToBean(a1);

        String a2 = ListToJSON();
        JSONToList(a2);
    }

    //java对象转json
    public static String BeanToJson(){
        Student student = new Student();  
        student.setId(1);  
        student.setName("jag");  
        student.setSex("man");  
        student.setAge(25);  
        student.setHobby(new String[]{"篮球","上网","跑步","游戏"});

        String string = JSONObject.toJSONString(student);
        System.out.println(string);
        return string;
    }
    //json转java对象
    public static void JsonToBean(String s1){

        Student parseObject = JSONObject.parseObject(s1, Student.class);

        System.out.println(parseObject.getName());
    }

    //list转json
    public static String ListToJSON(){
        List<Student> list1 = new ArrayList<Student>();
        Student student = new Student();  
        student.setId(1);  
        student.setName("jag");  
        student.setSex("man");  
        student.setAge(25);  
        student.setHobby(new String[]{"篮球","上网","跑步","游戏"});
        list1.add(student);

        Student student1 = new Student();  
        student1.setId(1);  
        student1.setName("jag");  
        student1.setSex("man");  
        student1.setAge(25);  
        student1.setHobby(new String[]{"篮球","上网","跑步","游戏"});
        list1.add(student1);

        System.out.println(JSONArray.toJSONString(list1));
        System.out.println(JSONObject.toJSONString(list1));

        return JSONArray.toJSONString(list1);
    }

    //json转list
    public static void JSONToList(String s1){

        List<Student> parseObject = JSONArray.parseArray(s1, Student.class);

        System.out.println(parseObject.get(0).getName());
    }

}
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