使用Typescript反射获取类属性和值

import 'reflect-metadata';

class MyClass {
  @Reflect.metadata('design:type', String)
  public name: string;

  @Reflect.metadata('design:type', Number)
  public age: number;

  constructor(name: string, age: number) {
    this.name = name;
    this.age = age;
  }
}

const obj = new MyClass('John', 30);

// 获取属性类型
const nameType = Reflect.getMetadata('design:type', obj, 'name');
console.log('name类型:', nameType); // 输出: name类型: [Function: String]

const ageType = Reflect.getMetadata('design:type', obj, 'age');
console.log('age类型:', ageType); // 输出: age类型: [Function: Number]

// 获取属性值
const nameValue = Reflect.get(obj, 'name');
console.log('name值:', nameValue); // 输出: name值: John

const ageValue = Reflect.get(obj, 'age');
console.log('age值:', ageValue); // 输出: age值: 30