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;
    }

}