java aop 注解

package com.spring.aop.service;

public interface UserService {
void save(String name);
void save();

}


package com.spring.aop.service.impl;

import org.springframework.stereotype.Service;

import com.spring.aop.service.UserService;

@Service
public class UserServiceBean implements UserService {

@Override
public void save(String name) {
System.out.println("UserService 正在保存"+name);

}

@Override
public void save() {
System.out.println("UserService 正在保存。。。空参数");

}

}

package com.spring.aop.interceptor;

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
public class MyInterceptor {
@Pointcut("execution(* com.spring.aop.service..*(..)) ")
private void anyMethod(){};

@Before("anyMethod()")
public void beforeLog(){
System.out.println("method do before log...");
}

@After("anyMethod()")
public void afterLog(){
System.out.println("method do after log...");
}

//方法执行的前后调用 
    @Around("anyMethod()") 
    public Object around(ProceedingJoinPoint point) throws Throwable{ 
        System.out.println("begin around"); 
        Object object = point.proceed(); 
        System.out.println("end around"); 
        return object; 
    }


}

package com.spring.aop.test;

import static org.junit.Assert.*;

import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.spring.aop.interceptor.MyInterceptor;
import com.spring.aop.service.UserService;

public class InterceptorTest {

@Autowired
private UserService userService;

@Test
public void test() {
fail("Not yet implemented");
}

@Test
public void interceptorTest(){
ApplicationContext cxt = new ClassPathXmlApplicationContext("beans.xml");
UserService service = (UserService)cxt.getBean("userService");
userService.save();

}

}

beans.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
xmlns:p="http://www.springframework.org/schema/p" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
<aop:aspectj-autoproxy/>

<bean id="myInterceptor" class="com.spring.aop.interceptor.MyInterceptor"></bean>
<bean id="userService" class="com.spring.aop.service.impl.UserServiceBean"></bean>
</beans>