生成JSON数据--Gson（谷歌）方法

Gson生成JSON数据方法：

创建相应的类，然后创建对象，toJson()进去就可以了

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要求：生成如下JSON数据

1.{“age”:4,”name”:”zhagnsan”}

2.{“no”:4,”name”:”zhangsan”,”employees”:[{“age”:3,”name”:”zhangsan”},{“age”:5,”name”:”lis”},{“age”:6,”name”:”wagw”}]}

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第一题代码：

Person类

package com.qf.demo2;public class Person {    private int age;    private String name;    public Person(int age, String name) {        super();        this.age = age;        this.name = name;    }    public Person() {        super();    }    public int getAge() {        return age;    }    public void setAge(int age) {        this.age = age;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    @Override    public String toString() {        return "Person [age=" + age + ", name=" + name + "]";    }}

获得JSON数据

package com.qf.demo6;import com.google.gson.Gson;import com.qf.demo2.Person;public class Test {    public static void main(String[] args) {        Gson gson = new Gson();        Person person = new Person(4, "zhagnsan");        String  json= gson.toJson(person);        System.out.println(json);    }}

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第二题代码：

Person类

package com.qf.demo2;public class Person {    private int age;    private String name;    public Person(int age, String name) {        super();        this.age = age;        this.name = name;    }    public Person() {        super();    }    public int getAge() {        return age;    }    public void setAge(int age) {        this.age = age;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    @Override    public String toString() {        return "Person [age=" + age + ", name=" + name + "]";    }}

获得JSON数据

package com.qf.demo6;import java.util.ArrayList;import com.google.gson.Gson;import com.qf.demo2.Person;public class Test3 {    public static void main(String[] args) {        ArrayList<Person> list = new ArrayList<>();        list.add(new Person(3, "zhangsan"));        list.add(new Person(5, "lis"));        list.add(new Person(6, "wagw"));        Employ employ = new Employ(4, "zhangsan", list);        Gson gson = new Gson();        String json = gson.toJson(employ);        System.out.println(json);    }}class Employ{    private int no;    private String name;    private ArrayList<Person> employees;    public Employ(int no, String name, ArrayList<Person> employees) {        super();        this.no = no;        this.name = name;        this.employees = employees;    }    public Employ() {        super();    }    public int getNo() {        return no;    }    public void setNo(int no) {        this.no = no;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public ArrayList<Person> getEmployees() {        return employees;    }    public void setEmployees(ArrayList<Person> employees) {        this.employees = employees;    }    @Override    public String toString() {        return "Employ [no=" + no + ", name=" + name + ", employees=" + employees + "]";    }}