package fastjsonstudy;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;

import java.util.*;

/**
 * Hello world!
 */
public class App {
    public static void main(String[] args) {
        //普通map
        String jsonString1 = "{\"param5\":\"value5\",\"param3\":\"value3\",\"param4\":\"value4\",\"param1\":\"value1\",\"param2\":\"value2\"}";
        System.out.println(jsonString1);
        Map<String,String> stringStringMap = (Map<String,String>)JSON.parse(jsonString1);
        for (String s : stringStringMap.keySet()) {
            System.out.println(s + "==>" +stringStringMap.get(s));
        }
        System.out.println("===================================================");

        //List<Map<String,String>>
        String jsonString2 = "[{\"param5\":\"value5\",\"param3\":\"value3\",\"param4\":\"value4\",\"param1\":\"value1\",\"param2\":\"value2\"},{\"p1\":\"v1\",\"p2\":\"v2\",\"p3\":\"v3\",\"p4\":\"v4\",\"p5\":\"v5\"}]";
        System.out.println(jsonString2);
        List<Map<String,String>> mapList = JSON.parseObject(jsonString2, new TypeReference<List<Map<String,String>>>(){});
        for (Map<String, String> stringObjectMap : mapList) {
            for (String s : stringObjectMap.keySet()) {
                System.out.println(s + "==>" + stringObjectMap.get(s));
            }
        }
        System.out.println("===================================================");

        //Map<String,Object> ==> Object還能夠進行分解
        String jsonString3 = "{\"count\":2,\"list\":[{\"param5\":\"value5\",\"param3\":\"value3\",\"param4\":\"value4\",\"param1\":\"value1\",\"param2\":\"value2\"},{\"p1\":\"v1\",\"p2\":\"v2\",\"p3\":\"v3\",\"p4\":\"v4\",\"p5\":\"v5\"}]}";
        System.out.println(jsonString3);
        Map<String,Object> map = JSON.parseObject(jsonString3);
        System.out.println(map.get("count"));
        String tempjsonString3 = map.get("list").toString();
        System.out.println(tempjsonString3);
        List<Map<String,String>> mapList2 = JSON.parseObject(tempjsonString3, new TypeReference<List<Map<String,String>>>(){});
        for (Map<String, String> stringObjectMap : mapList2) {
            for (String s : stringObjectMap.keySet()) {
                System.out.println(s + "==>" + stringObjectMap.get(s));
            }
        }
        System.out.println("===================================================");

        //解析已有的物件
        String jsonString4 = "[{\"age\":12,\"date\":1465475917155,\"name\":\"s1\"},{\"age\":12,\"date\":1465475917175,\"name\":\"s2\"},{\"age\":12,\"date\":1465475917175,\"name\":\"s3\"},{\"age\":12,\"date\":1465475917175,\"name\":\"s4\"},{\"age\":12,\"date\":1465475917175,\"name\":\"s5\"},{\"age\":12,\"date\":1465475917175,\"name\":\"s6\"}]";
        System.out.println(jsonString4);
        List<Student> studentList = JSON.parseArray(jsonString4,Student.class);
        for (Student student : studentList) {
            System.out.println(student.getName());
        }
        System.out.println("===================================================");

        //解析已有的物件的另一種方式
        System.out.println(jsonString4);
        List<Student> studentList2 = JSON.parseObject(jsonString4,new TypeReference<List<Student>>(){});
        for (Student student : studentList2) {
            System.out.println(student.getName());
        }
    }
}
 

package fastjsonstudy;

import java.util.Date;

/**
 * Created by Administrator on 2016-10-21.
 */
public class Student {
    private String name;
    private int age;
    private Date date;

    public Student() {
        // TODO Auto-generated constructor stub
    }

    public Student(String name,int age,Date date){
        this.name = name;
        this.age = age;
        this.date = date;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public Date getDate() {
        return date;
    }

    public void setDate(Date date) {
        this.date = date;
    }
}