SpringAOP简单实例（基于注解）

拼搏现实的明天。 2023-06-10 06:23 292阅读 0赞

首先，在ApplicationContext.xml中配置如下：

>     <?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:p="http://www.springframework.org/schema/p"
>            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.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">
>         
>     
>         
>         
>     
>         
>     
>     
>         <aop:aspectj-autoproxy proxy-target-class="true"></aop:aspectj-autoproxy>
>     
>         <context:component-scan base-package="com.day10_24"></context:component-scan>
>     
>     </beans>

然后编写AOP切面类

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3hpYW9fc2hpeGlvbmc_size_16_color_FFFFFF_t_70][]

>     package com.day10_24.AOPs;
>     
>     import org.aspectj.lang.annotation.After;
>     import org.aspectj.lang.annotation.Aspect;
>     import org.aspectj.lang.annotation.Before;
>     import org.aspectj.lang.annotation.Pointcut;
>     import org.springframework.stereotype.Component;
>     
>     @Aspect
>     @Component
>     public class Aop {
>     
>          
>         @Pointcut("execution(* com.day10_24.AOPs.IUserDaoImpl.sys())")
>         public void testPoint(){
>         }
>     
>         @Before("testPoint()")
>         public void testBefore()
>         {
>             System.out.println("testPoint() Before Success!");
>         }
>     
>         @After("testPoint()")
>         public void testAfter()
>         {
>             System.out.println("testPoint() After Success!");
>         }
>     
>     }

接下来编写目标对象方法

>     package com.day10_24.AOPs;
>     
>     public interface IUserDao {
>         public void sys();
>     
>     }

>  
> 
>     package com.day10_24.AOPs;
>     
>     import org.springframework.stereotype.Component;
>     
>     @Component("iUserDaoImpl")
>     public class IUserDaoImpl implements IUserDao {
>         @Override
>         public void sys() {
>             System.out.println("hello World！");
>         }
>     }

编写测试类

>     public class Test3 {
>         public static void main(String[] args) {
>             ClassPathXmlApplicationContext applicationContext=
>                     new ClassPathXmlApplicationContext("applicationContext.xml");
>             IUserDao userDao=applicationContext.getBean("iUserDaoImpl", IUserDaoImpl.class);
>             userDao.sys();
>         }
>     }

打印结果：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3hpYW9fc2hpeGlvbmc_size_16_color_FFFFFF_t_70 1][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3hpYW9fc2hpeGlvbmc_size_16_color_FFFFFF_t_70]: /images/20230531/ddd298cb223847d0aa9eb15f27be32a0.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3hpYW9fc2hpeGlvbmc_size_16_color_FFFFFF_t_70 1]: /images/20230531/18c9891be6864d668b68d0ad68a322fe.png