Spring Aop Annotation(@Pointcut)

@Pointcut定义一个切入点

@Pointcut("execution(public * com.bxw.aop.service.*.*(..))")
    public void myMethod(){};

这表明定义一个切入点，该切入点名为myMethod

该切入点位置在com.bxw.aop.service中的所有类的所有方法。

package com.bxw.aop.interceptor;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.stereotype.Component;

@Aspect
@Component
public class UserServiceInterceptor {
    @Pointcut("execution(public * com.bxw.aop.service.*.*(..))")
    public void myMethod(){};
    
    @Around("myMethod()")
    public void aroundMethod(ProceedingJoinPoint pjp){
        System.out.println("login start");
        try {
            pjp.proceed();
        } catch (Throwable e) {
            e.printStackTrace();
        }
        System.out.println("login end");
    }
}

pjp.proceed启动方法执行。

==========分界线===================

配置文件配置：

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"  
    xmlns:tx="http://www.springframework.org/schema/tx" xmlns:p="http://www.springframework.org/schema/p" xmlns:util="http://www.springframework.org/schema/util" xmlns:jdbc="http://www.springframework.org/schema/jdbc"  
    xmlns:cache="http://www.springframework.org/schema/cache"  
    xsi:schemaLocation="  
    http://www.springframework.org/schema/context  
    http://www.springframework.org/schema/context/spring-context.xsd  
    http://www.springframework.org/schema/beans  
    http://www.springframework.org/schema/beans/spring-beans.xsd  
    http://www.springframework.org/schema/tx  
    http://www.springframework.org/schema/tx/spring-tx.xsd  
    http://www.springframework.org/schema/jdbc  
    http://www.springframework.org/schema/jdbc/spring-jdbc-3.1.xsd  
    http://www.springframework.org/schema/cache  
    http://www.springframework.org/schema/cache/spring-cache-3.1.xsd  
    http://www.springframework.org/schema/aop  
    http://www.springframework.org/schema/aop/spring-aop.xsd  
    http://www.springframework.org/schema/util  
    http://www.springframework.org/schema/util/spring-util.xsd">
    <!-- 初始化bean -->  
    <context:component-scan base-package="com.bxw.aop.*"></context:component-scan>
    <!-- 初始化aop --> 
        <!-- 将interceptor声明为bean -->
    <bean id="myInterceptor" class="com.bxw.aop.interceptor.UserServiceInterceptor"></bean>
    <aop:config>
        <aop:aspect id="myAspect" ref="myInterceptor">
            <aop:around method="aroundMethod" pointcut="execution(public * com.bxw.aop.service.*.*(..))"/>
        </aop:aspect>
    </aop:config>
</beans>