Spring v3.0.2 Learning Note 13 - AOP Example

• 命名空間的支持 

<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 ">
    <context:component-scan base-package="com.spring.test" />

    <aop:aspectj-autoproxy />
     // AOP中這2個Bean的定義不可少！不明爲什麼，我定義了類路徑的自動掃描了
    <bean id="personAopImpl" class="com.spring.test.aop.PersonAopImpl" />
    <bean id="personAopProxy" class="com.spring.test.aop.PersonAopProxy" />
</beans>

• Aspect 註解

<aop:aspectj-autoproxy />

• 原代碼

接口：
package com.spring.test.aop;

public interface IPersonAop {
    public void sayHello(String name);
}


實現類：
package com.spring.test.aop;

import org.springframework.stereotype.Service;

@Service
public class PersonAopImpl implements IPersonAop {
   
    @Override
    public void sayHello(String name) {
        System.out.println("Hello," + name);
    }
}



代理類：
package com.spring.test.aop;

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

@Aspect
public class PersonAopProxy {

    @Before("execution (* com.spring.test.aop..*.*(..))")
    public void before() {
        System.out.println("before...");
    }

    @After("execution (* com.spring.test.aop..*.*(..))")
    public void after() {
        System.out.println("after...");
    }
}

測試類：
package com.spring.test.junit;

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

import com.spring.test.aop.IPersonAop;

public class AopTest {

    @BeforeClass
    public static void setUpBeforeClass() throws Exception {
    }

    @AfterClass
    public static void tearDownAfterClass() throws Exception {
    }

    @Test
    public void test(){
        ApplicationContext ctx = new ClassPathXmlApplicationContext(
        "spring.xml");
        IPersonAop aop = (IPersonAop)ctx.getBean("personAopImpl");
        aop.sayHello("xxxxx");
    }
}