package com.reflect;

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

	public Person() {

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

	public String getName() {
		return name;
	}

	@validName
	public void setName(String name) {
		this.name = name;
	}

	public void printInfo(String name, int age) {
		System.out.println(name + age);
	}

	public int getAge() {
		return age;
	}

	@MyAge(max = 30, min = 20)
	public void setAge(int age) {
		this.age = age;
	}

}

如果知道反射调用的方法需要传几个参数 直接赋值（参数类型.class  ）

Class perClass=Person.class;
String name="reflect";
		int age=25;
		Object newInstance = perClass.newInstance();
		Method method = perClass.getMethod("setName", String.class);
		method.invoke(newInstance, name);

System.out.println(name);

Method method2 = perClass.getMethod("printInfo", String.class,int.class);
		method2.invoke(newInstance, name,age);

运行结果 如图：

java 反射获取方法 java反射获取方法的传参_java