java- 打印声明对象对应class的类名，按json格式输出类对象

1. 创建对象javaBean

public class Student {
    //姓名
    private String name;
    //年龄
    private String age;
    //住址
    private String address;
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getAge() {
        return age;
    }
    public void setAge(String age) {
        this.age = age;
    }
    public String getAddress() {
        return address;
    }
    public void setAddress(String address) {
        this.address = address;
    }
    @Override
    public String toString() {
        return "Student [name=" + name + ",
         age=" + age + ", address="
                + address + "]";
    }


}

1. 通过对象输出其类名称

public static void getClassNameByObj(){
    Student s = new Student();
    System.out.println(s.getClass());
}

1. 输出json格式的对象内容

public static void convertObject() {

        Student stu=new Student();
        stu.setName("JSON");
        stu.setAge("23");
        stu.setAddress("北京市西城区");

        //1、使用JSONObject
        JSONObject json = JSONObject.fromObject(stu);
        //2、使用JSONArray
        JSONArray array=JSONArray.fromObject(stu);

        String strJson=json.toString();
        String strArray=array.toString();

        System.out.println("strJson:"+strJson);
        System.out.println("strArray:"+strArray);
    }