spring aop切面应用，记录日志、请求处理耗时

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依赖jar包

aopalliance.jar、aspectjrt.jar、aspectjweaver-1.6.jar

spring配置文件（着重aop部分配置）：

<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/beans      http://www.springframework.org/schema/beans/spring-beans-3.2.xsd      http://www.springframework.org/schema/context       http://www.springframework.org/schema/context/spring-context-3.2.xsd      http://www.springframework.org/schema/mvc      http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd      http://www.springframework.org/schema/aop      http://www.springframework.org/schema/aop/spring-aop-4.0.xsd"><context:property-placeholder location="classpath*:application.properties" /><context:component-scan base-package="com.csp.iobs" /><aop:aspectj-autoproxy/>

切面代码（环绕通知）：

package com.test.aspect;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;import org.aspectj.lang.ProceedingJoinPoint;import org.aspectj.lang.annotation.After;import org.aspectj.lang.annotation.Around;import org.aspectj.lang.annotation.Aspect;import org.aspectj.lang.annotation.Before;import org.aspectj.lang.annotation.Pointcut;import org.springframework.stereotype.Component;@Aspect@Componentpublic class ControllerAspect {private static final Log LOG = LogFactory.getLog(ControllerAspect.class);@Pointcut(value = "execution(public * com.test.controller.*.*(..))")public void recordLog() {}/** * 所拦截方法执行之前执行 */@Before("recordLog()")public void before(){System.out.println("before---------------------------------------");}/** * 同时在所拦截方法的前后执行 *在ProceedingJoinPoint.proceed()前后加逻辑 */@Around("execution(public * com.test.controller.*.*(..))")public void around(ProceedingJoinPoint joinPoint) throws Throwable {long startTime = System.currentTimeMillis();joinPoint.proceed();//个人理解是去执行相应的Controller方法long costTime = System.currentTimeMillis() - startTime;String methodName = joinPoint.getSignature().getName();//记录执行请求耗时LOG.info(methodName + " finished ! Cost : " + costTime + " ms.");}/** * 所拦截方法执行之后执行 */@After("recordLog()")public void after(){System.out.println("after---------------------------------------");}}

推荐文章地址：http://outofmemory.cn/code-snippet/3025/spring-AOP-Around-Before-After-differentiate

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