Aop简单应用实例，注解模式

Service接口：
package snail.service;

public interface PersonService {

public void save(String name);

public void update(String name, Integer id);

public String getName(Integer id);
}

接口实现：
package snail.serviceimp;

import snail.service.PersonService;

public class PersonServiceimp implements PersonService{

@Override
public void save(String name) {
System.out.println("woshi save()");
}

@Override
public void update(String name, Integer id) {

System.out.println("woshi update()");

}

@Override
public String getName(Integer id) {

System.out.println("woshi getName()");
return id+"";
}

}
切面类：
package snail.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;
import org.springframework.stereotype.Component;

@Aspect
public class Myintercepter {
@Pointcut("execution (* snail.serviceimp.PersonServiceimp.*(..))")
public void anyMethod(){}
@Before("anyMethod() && args(userName)")//定义前置通知,anyMethod()是必须的方法，//args（username）不是必须的，是接收方法的参数
public void doAccessCheck(String userName) {
System.out.println("前置通知"+userName);
}
@AfterReturning(pointcut="anyMethod()",returning="revalue")//定义后置通知 returning参数是接收被拦截的方法的返回值
public void doReturnCheck(String revalue) {
System.out.println("后置通知"+revalue);
}
@AfterThrowing(pointcut="anyMethod()", throwing="ex")//定义例外通知
public void doExceptionAction(Exception ex) {
System.out.println("例外通知"+ex);
}
@After("anyMethod()")//定义最终通知
public void doReleaseAction() {
System.out.println("最终通知");
}
@Around("anyMethod()")//环绕通知
public Object doBasicProfiling(ProceedingJoinPoint pjp) throws Throwable {
System.out.println("环绕通知");
return pjp.proceed();
}

}

<?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-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 ">
<aop:aspectj-autoproxy></aop:aspectj-autoproxy>

<bean id="aop" class="snail.service.Myintercepter"></bean>
<bean id="pp" class="snail.serviceimp.PersonServiceimp"></bean>
</beans>

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import snail.serviceimp.PersonServiceimp;

public class test {

public static void main(String[] args) {

ApplicationContextatx=new ClassPathXmlApplicationContext("applicationContext.xml");
PersonService b=(PersonService) atx.getBean("pp");
//Myintercepter ss=(Myintercepter)atx.getBean("aop");
b.save("保存snail");
b.getName(1);
b.update("gengxin", 5);
}

}