SpringMVC中使用AOP

1.定義一個AOP：

package org.yang.aop;

import java.io.IOException;

import javax.servlet.http.HttpServletResponse;

import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;

@Aspect
public class ControllerAfterAdvice
{
	@AfterReturning("@annotation(org.springframework.web.bind.annotation.RequestMapping) && (args(response, userName,..) || args(..,response, userName))")
	public void after(HttpServletResponse response, String userName) throws IOException
	{
		response.getWriter().write("");
		System.out.println("userName：" + userName);
		System.out.println("執行了After Advice");
	}
}

2.在spring的上下文配置中定義一個<Bean>

3.加上：<aop:aspectj-autoproxy proxy-target-class="true"/>：作用：允許AspecJ攔截Controller

4.再加上：<context:component-scan base-package="org.yang.aop"></context:component-scan>：作用：使註解生效