获取所选部件的属性名称

const obj = { name: 'John', age: 25 };
const propertyNames = Object.keys(obj);
console.log(propertyNames); // ['name', 'age']

class Person:
    def __init__(self, name, age):
        self.name = name
        self.age = age

person = Person('John', 25)
propertyNames = dir(person)
print(propertyNames)  # ['__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__le__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', 'age', 'name']

import java.lang.reflect.Field;

public class Person {
    private String name;
    private int age;

    public Person(String name, int age) {
        this.name = name;
        this.age = age;
    }

    public static void main(String[] args) {
        Person person = new Person("John", 25);
        Field[] fields = person.getClass().getDeclaredFields();
        for (Field field : fields) {
            System.out.println(field.getName());
        }
    }
}