Spring中的日志通知

19.1新建一个UserDao的接口;

package com.eduask.aop;

//新建一个USerDao的接口;

public interface UserDao {

void add();

void delete();

void update();

void query();

}

19.2新建一个UserDaoImpl的类实现UserDao;

package com.eduask.aop;

import org.springframework.stereotype.Repository;

@Repository

//新建一个UserDaoImpl实现UserDao接口;

public class UserDaoImpl implements UserDao{

@Override

public void add() {

// TODO Auto-generated method stub

System.out.println("this is add method");

}

@Override

public void delete() {

System.out.println("this is delete method");

}

@Override

public void update() {

System.out.println("this is update method");

}

@Override

public void query() {

System.out.println("this is query method");

}

}

19.3 新建一个UserService的接口;

package com.eduask.aop;

//新建一个UserService的接口;

public interface UserService {

void add();

void delete();

void update();

void query();

}

19.4 新建一个UserServiceImpl类实现UserService

package com.eduask.aop;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;

@Service

public class UserServiceImpl implements UserService {

@Resource(name="userDaoImpl")

private UserDao userDao;

@Override

public void add() {

userDao.add();

}

@Override

public void delete() {

// TODO Auto-generated method stub

userDao.delete();

}

@Override

public void update() {

// TODO Auto-generated method stub

userDao.update();

}

@Override

public void query() {

// TODO Auto-generated method stub

userDao.query();

}

}

19.5 新建一个日志通知;

package com.eduask.aop;

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.springframework.stereotype.Component;

@Aspect

@Component

public class LogAspect {

@Around("execution(* com.eduask.aop.UserServiceImpl.*(..))")

public void around(ProceedingJoinPoint joinPoint){

System.out.println(joinPoint.getSignature().getName());

try {

System.out.println("前置通知");

joinPoint.proceed();

System.out.println("后置通知");

} catch (Throwable e) {

System.out.println("异常通知"+e);

}

System.out.println("返回通知");

}

}

19.6新建一个TestUserDao类;

package com.eduask.aop;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TestUserDao {

public static void main(String[] args) {

ClassPathXmlApplicationContext ac=new ClassPathXmlApplicationContext("aopBean.xml");

UserService service=(UserService) ac.getBean("userServiceImpl");

service.add();

service.delete();

service.update();

service.query();

}

}

19.7 新建一个aopBean.xml的配置文件;

<?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:util="http://www.springframework.org/schema/util"

xmlns:aop="http://www.springframework.org/schema/aop"

xsi:schemaLocation="http://www.springframework.org/schema/beans

    http://www.springframework.org/schema/beans/spring-beans.xsd

    http://www.springframework.org/schema/context

    http://www.springframework.org/schema/context/spring-context-4.0.xsd

    http://www.springframework.org/schema/util

    http://www.springframework.org/schema/util/spring-util-4.0.xsd

    http://www.springframework.org/schema/aop

    http://www.springframework.org/schema/aop/spring-aop-4.0.xsd

    ">

<context:annotation-config/>

<context:component-scan base-package="com.eduask.aop"/>

<aop:aspectj-autoproxy/>

</beans>

19.8 程序运行如下：

2016-6-28 22:31:29 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh

信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@593d93f4: startup date [Tue Jun 28 22:31:29 GMT+08:00 2016]; root of context hierarchy

2016-6-28 22:31:30 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions

信息: Loading XML bean definitions from class path resource [aopBean.xml]

add

前置通知

this is add method

后置通知

返回通知

delete

前置通知

this is delete method

后置通知

返回通知

update

前置通知

this is update method

后置通知

返回通知

query

前置通知

this is query method

后置通知

返回通知