Spring AOP（注解方式）

配置文件： xmlns:aop="http://www.springframework.org/schema/aop"
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd

<aop:aspectj-autoproxy/>

<?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:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd"> <aop:aspectj-autoproxy/>
<bean id="myInterceptor" class="cn.itcast.service.MyInterceptor"/>
<bean id="personService" class="cn.itcast.service.impl.PersonServiceBean"></bean>
</beans>

切面注解：@Aspect

定义切入点：@Pointcut

package cn.itcast.service;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
/**
* 切面
*
*/
@Aspect
public class MyInterceptor {
@Pointcut("execution (* cn.itcast.service.impl.PersonServiceBean.*(..))")
private void anyMethod() {}//声明一个切入点

@Before("anyMethod() && args(name)")
public void doAccessCheck(String name) {
System.out.println("前置通知:"+ name);
}
@AfterReturning(pointcut="anyMethod()",returning="result")
public void doAfterReturning(String result) {
System.out.println("后置通知:"+ result);
}
@After("anyMethod()")
public void doAfter() {
System.out.println("最终通知");
}
@AfterThrowing(pointcut="anyMethod()",throwing="e")
public void doAfterThrowing(Exception e) {
System.out.println("例外通知:"+ e);
}

@Around("anyMethod()")
public Object doBasicProfiling(ProceedingJoinPoint pjp) throws Throwable {
//if(){//判断用户是否在权限
System.out.println("进入方法");
Object result = pjp.proceed();
System.out.println("退出方法");
//}
return result;
}

}