Spring AOP基于XML注解开发

最新推荐文章于 2025-06-21 15:58:06 发布

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#Spring AOP基于XML注解开发

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本文详细介绍了如何使用Spring的AOP特性结合XML配置进行实际项目开发，包括配置文件详解、接口及实现类设计、切面类开发、测试过程及运行结果分析，为读者提供了一个完整的AOP应用案例。

1导的包和目录结构

在这里插入图片描述

2XML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"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="
       http://www.springframework.org/schema/beans        
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context   
       http://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">

    <context:component-scan base-package="com.baidu"></context:component-scan>
    <!--使注解和配置都生效-->
    <context:annotation-config/>

    <bean id="deptService" class="com.baidu.XML.DeptServiceImp"></bean>
    <bean id="myXML"  class="com.baidu.XML.MyXML"></bean>

    <aop:config>

           <aop:aspect ref="myXML">
   <aop:pointcut id="poi1" expression="execution(* com.baidu.XML.DeptServiceImp.*(..))"></aop:pointcut>

   <aop:pointcut id="poi2" expression="execution(* com.baidu.XML.DeptServiceImpl.findName(..))"></aop:pointcut>
   <aop:before method="myBefore" pointcut-ref="poi1"></aop:before>
 <aop:after-returning method="myAfter" pointcut-ref="poi1" returning="reval"></aop:after-returning>

          </aop:aspect>

    </aop:config>


</beans>

3接口和实现类

package com.baidu.XML;

public interface DeptServiceI {
    void add();
    void del();
    String findName();
}

package com.baidu.XML;

public class DeptServiceImp implements DeptServiceI {
    @Override
    public void add() {
        System.out.println("add---");

    }

    @Override
    public void del() {
        System.out.println("del---");

    }

    @Override
    public String findName() {
        System.out.println(" findName");
        //int i=1/0;
        return "Lisi";
    }
}

4开发类

package com.baidu.XML;


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

//纯注解开发
@Aspect
public class MyXML {

   //@Before(value = "execution(* com.baidu.AspectJ.DeptServiceImp.*(..))")
    public  void  myBefore(JoinPoint joinPoint){

    System.out.println("前置增强"+joinPoint);
}


  // @AfterReturning(value = "execution(* com.baidu.AspectJ.DeptServiceImp.findName(..))",returning="reval")

public  void  myAfter(JoinPoint joinPoint,Object reval){

    System.out.println("后置增强,返回值："+reval);
}

   // @Around(value ="execution(* com.baidu.AspectJ.DeptServiceImp.findName(..))")

public Object myAround(ProceedingJoinPoint point) throws Throwable {

    System.out.println("环绕通知前1");
    Object returnVal=point.proceed();
    System.out.println("环绕通知后2");
    return returnVal;

}

//@AfterThrowing(value ="execution(* com.baidu.AspectJ.DeptServiceImp.findName(..))",throwing = "ex")

public void myAfterThrowing(JoinPoint joinPoint,Throwable ex) {

    System.out.println("异常通知，异常信息是：" + ex.getMessage());

}


   // @After(value ="execution(* com.baidu.AspectJ.DeptServiceImp.findName(..))")

public void myAfter() {

    System.out.println("最终通知" );

}

//简化表达式
    @Before(value = "MyAspectJ.zz()")
    public  void  myBeforePointcut(JoinPoint joinPoint){

    System.out.println("前置增强"+joinPoint);
}
@Pointcut(value = "execution(* com.baidu.XML.DeptServiceImp.*(..))")
    private  void  zz(){

}

}

5测试类

package com.baidu.XML;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TestMyXML {

    public static void main(String[] args) {

        ClassPathXmlApplicationContext applicationContext =
                new ClassPathXmlApplicationContext("XMLapplicationContext.xml");

        DeptServiceI deptServiceI = (DeptServiceI)applicationContext.getBean("deptService");//
        deptServiceI.add();
        deptServiceI.del();
        deptServiceI.findName();

    }
}

6运行结果

前置增强execution(void com.baidu.XML.DeptServiceI.add())
add---
最终通知
前置增强execution(void com.baidu.XML.DeptServiceI.del())
del---
最终通知
前置增强execution(String com.baidu.XML.DeptServiceI.findName())
 findName
最终通知

Process finished with exit code 0