1.还是建立前面的依赖注入的例子上。
2.导入aopalliance.jar aspectjrt.jar aspectjweaver.jar三个包
3.新建LogAspect .java,注意此时的方法已经没有annotation（废话）。所以需要在bean.xml做配置
package org.zttc.itat.spring.proxy;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.springframework.stereotype.Component;
@Component("logAspect")//让这个切面类被Spring所管理
public class LogAspect {
public void logStart(JoinPoint jp) {
//得到执行的对象
System.out.println(jp.getTarget());
//得到执行的方法
System.out.println(jp.getSignature().getName());
Logger.info("加入日志");
}
public void logEnd(JoinPoint jp) {
Logger.info("方法调用结束加入日志");
}
public void logAround(ProceedingJoinPoint pjp) throws Throwable {
Logger.info("开始在Around中加入日志");
pjp.proceed();//执行程序
Logger.info("结束Around");
}
}
4.bean.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
<!-- 打开Spring的Annotation支持 -->
<context:annotation-config/>
<!-- 设定Spring 去哪些包中找Annotation -->
<context:component-scan base-package="org.zttc.itat.spring"/>
<aop:config>
<!-- 定义切面 -->
<aop:aspect id="myLogAspect" ref="logAspect">
<!-- 在哪些位置加入相应的Aspect -->
<aop:pointcut id="logPointCut" expression="execution(* org.zttc.itat.spring.dao.*.add*(..))||
execution(* org.zttc.itat.spring.dao.*.delete*(..))||
execution(* org.zttc.itat.spring.dao.*.update*(..))"/>
<aop:before method="logStart" pointcut-ref="logPointCut"/>
<aop:after method="logEnd" pointcut-ref="logPointCut"/>
<aop:around method="logAround" pointcut-ref="logPointCut"/>
</aop:aspect>
</aop:config>
</beans>
一般的aop都用xml，不用annotion