Spring课程 Spring入门篇 5-4 advice应用（上）

1　　　　解析

2　　　　代码演练

1　　　　解析

2　　　　代码演练

2.1　　前置通知和后置通知

业务类：

package com.imooc.aop.schema.advice.biz;

public class AspectBiz {
    
    public void biz(){
        System.out.println("MoocAspect biz");
    }
    
    public void biz2(){
        System.out.println("MoocAspect biz2");
    }

}

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


<bean id = "moocAspect" class = "com.imooc.aop.schema.advice.MoocAspect"></bean>
<bean id = "AspectBiz" class = "com.imooc.aop.schema.advice.biz.AspectBiz"></bean>

<aop:config>
    <aop:aspect  id="moocAspectAOP" ref="moocAspect">
<!--     声明切入点：从哪里开始执行 -->
<!--     执行com.imooc.aop.schema.advice.biz包下的所有Biz结尾的java类中的所有方法时 -->
        <aop:pointcut expression="execution(* com.imooc.aop.schema.advice.biz.*Biz.*(..))" id="moocPointCut"/>
        <aop:before method="before" pointcut-ref="moocPointCut"/>
        <aop:after-returning method="after" pointcut-ref="moocPointCut"/>
    </aop:aspect>
</aop:config>

</beans>

通知（名词）所在的类：

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package com.imooc.aop.schema.advice;

public class MoocAspect {
    
    public void before(){
        System.out.println("before");
    }
    
    public void after(){
        System.out.println("after");
    }

}

测试类：

package com.imooc.test.aop;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.BlockJUnit4ClassRunner;

import com.imooc.aop.schema.advice.biz.AspectBiz;
import com.imooc.test.base.UnitTestBase;

@RunWith(BlockJUnit4ClassRunner.class)
public class TestAOPSchemaAdvice extends UnitTestBase {
    
    public TestAOPSchemaAdvice(){
        super("classpath:spring-aop-schema-advice.xml");
    }
    
    @Test
    public void testBiz(){
        AspectBiz aBiz = super.getbean("AspectBiz");
        aBiz.biz();
        aBiz.biz2();
    }

}

打印结果：

四月 15, 2019 8:19:44 下午 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh
信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@285855bd: startup date [Mon Apr 15 20:19:44 CST 2019]; root of context hierarchy
四月 15, 2019 8:19:44 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
信息: Loading XML bean definitions from class path resource [spring-aop-schema-advice.xml]
before
MoocAspect biz
after
before
MoocAspect biz2
after
四月 15, 2019 8:19:45 下午 org.springframework.context.support.ClassPathXmlApplicationContext doClose
信息: Closing org.springframework.context.support.ClassPathXmlApplicationContext@285855bd: startup date [Mon Apr 15 20:19:44 CST 2019]; root of context hierarchy

 2.2　　异常通知和后置通知

业务类：

配置文件：

通知所在类：

测试类：

打印日志：