动态代理与spring AOP

来源：互联网发布：padding tensorflow 编辑：程序博客网时间：2024/05/21 09:17

给出一个简单的例子

定义了一个类

package com.xiaoqiang.user;public class User {public void add(){System.out.println("this is a method");}}

定义了一个拦截器此时拦截器必须要实现MethodInterceptor接口

package com.xiaoqiang.interceptor;import java.lang.reflect.Method;import net.sf.cglib.proxy.MethodInterceptor;import net.sf.cglib.proxy.MethodProxy;public class Interceptor implements MethodInterceptor {@Override

         //当调用User的方法的时候拦截器方法将会首先执行public Object intercept(Object arg0, Method arg1, Object[] arg2,MethodProxy proxy) throws Throwable {System.out.println("xiaoqiang0");       proxy.invokeSuper(arg0, arg2);  //调用被动态代理的对象的方法    System.out.println("xiaoqiang");    return null;}}

package com.xiaoqiang.test;import net.sf.cglib.proxy.Enhancer;import com.xiaoqiang.interceptor.Interceptor;import com.xiaoqiang.user.User;public class ReflectionTest {public static void main(String[] args) {Enhancer enhancer = new Enhancer();enhancer.setSuperclass(User.class);enhancer.setCallback(new Interceptor());User user =(User) enhancer.create();user.add();}}