spring aop 功能实例简述

spring aop 功能实例简述

说明 ：aspectj采用注解方式

需要的jar
导入了dist里面的所有jar
从外部找的jar共有5个：
commons-logging-1.1.1.jar
aspectjrt.jar(下载aspectj安装，从其lib路径中拷出)
aspectjweaver.jar(下载aspectj安装，从其lib路径中拷出)
cglib-2.2.jar
aopalliance.jar

1：aop拦截器类InteceptorClass

package com.Test;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;

@Aspect
public class InteceptorClass
{
@Pointcut("execution (* com.Test.AopServiceImpl.*(..))")
private void myPointCutMethod(){};

@Before("myPointCutMethod() & args(name)")
public void doAccessCheck(){
System.out.println("before advice");
}


@After("myPointCutMethod()")
public void doMemoryClear(JoinPoint point){
Object objArgsObject = point.getArgs()[0];
System.out.println(objArgsObject.toString());
}

}



2：业务类AopService

package com.Test;

public interface AopService
{
public String save(String user);
public void update(String user);
}

package com.Test;

public class AopServiceImpl implements AopService
{
private String user = null;


public AopServiceImpl(String user) {
this.user = user;
}

public AopServiceImpl() {}

public String getUser() {
return user;
}


public void setUser(String user) {
this.user = user;
}

public String save(String user){
return "Jamson";
}

public void update(String user){
}
}

3：spring配置文件beans.xml

<?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:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:annotation-config/>
<aop:aspectj-autoproxy/>

<bean id="aopService" class="com.Test.AopServiceImpl" />
<bean id="inteceptorClass" class="com.Test.InteceptorClass" scope="singleton">
</bean>
</beans>
4:测试类AOPTest

package com.Test;

import org.junit.BeforeClass;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class AOPTest
{

private static AopService aopService;
@BeforeClass
public static void setUpBeforeClass() throws Exception {
ApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");
aopService = (AopService) ctx.getBean("aopService");
}
@Test
public void aoptest(){
aopService.save("qqqqqqqqqqqqqqqqqqqqqqqq");
}

}