java- 打印声明对象对应class的类名，按json格式输出类对象

傷城~ 2022-05-15 10:09 825阅读 0赞

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);
        }