Aop练手

Posted 2022-01-22 kongieg

applicationContext.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns="http://www.springframework.org/schema/beans" 
       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-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd ">
<context:component-scan base-package="com.kong.bean"></context:component-scan>
<bean name="myPerform" class="com.kong.service.MyPerform"></bean>
<bean name="myAdvice" class="com.kong.service.MyAdvice"></bean>
<aop:config>
    <aop:aspect  ref="myAdvice">
    <aop:pointcut expression="execution(* com.kong.service.MyPerform.persist(..))" id="peisistCut"/>
        <aop:before pointcut-ref="peisistCut" method="doBefore"/>
        <aop:after pointcut-ref="peisistCut" method="doAfterRegardlessIsOk"/>
        <aop:after-returning pointcut-ref="peisistCut" method="doAfter"/>
        <aop:after-throwing pointcut-ref="peisistCut" method="doAfterThrowing"/>
        <aop:around pointcut-ref="peisistCut" method="doSurround"/>
    </aop:aspect>
</aop:config>
</beans>

切点类：MyPerform.java

package com.kong.service;

public class MyPerform 
    public void persist() 
        System.out.println("do persist() method!!!");
    
    
    public void delete() 
        System.out.println("do delete() method!!!");
    
    
    public void modify() 
        System.out.println("do modify() method!!!");
    
    
    public void find() 
        System.out.println("do find() method!!!");
    

切面：

package com.kong.service;

import org.aspectj.lang.ProceedingJoinPoint;

public class MyAdvice 
    public void doBefore() 
        System.out.println("myAdvice_method:doBefore()!!");
    
    public void doAfter() 
        System.out.println("myAdvice_method:doAfter()!!");
    
    public void doAfterRegardlessIsOk() 
        System.out.println("myAdvice_method:doAfterRegardlessIsOk()!!");
    
    public void doAfterThrowing() 
        System.out.println("myAdvice_method:doAfterThrowing;if program comes exception,this message will show!!!");
    
    
    public void doSurround(ProceedingJoinPoint pj) throws InterruptedException 
        try 
            System.out.println("method doSurround() begin,hehehhe!");
            System.out.println("begin drive time niddle");
            Long start = System.currentTimeMillis();
            Thread.sleep(2000);
            pj.proceed();
            Long end = System.currentTimeMillis();
            System.out.println("method doSurround() end,use time "+(end-start)+"mills");
         catch (Throwable e) 
            // TODO Auto-generated catch block
            System.out.println("Exception ocurred");
            e.printStackTrace();
        
        
    

测试：

package com.kong.test;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;import com.kong.service.MyPerform;
public class MyTest 

    @Test
    public  void test_01() 
    
         ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
         MyPerform myPerform = (MyPerform) ac.getBean("myPerform");
         myPerform.persist();
    
    

结果是对滴 .^_^.