AOP操作—AspectJ注解（基于配置文件）

r囧r小猫 2024-04-06 12:01 42阅读 0赞

1.  （1）创建两个类，增强类和被增强类，创建方法

//被增强类
    public class Book{
        public void buy(){
            System.out.println("buy.......");
        }
    }
    //增强类
    public class BookProxy{
        public void before(){
            System.out.println("before.......");
        }
    }

（2）创建对象

<bean id="book" class="cn.xs.spring5.Aop.aopXml.Book"></bean>
    <bean id="bookProxy" class="cn.xs.spring5.Aop.aopXml.BookProxy"></bean>

1.  （3）在spring配置文件中配置切入点

<?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: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">
    
        
        <bean id="book" class="cn.xs.spring5.Aop.aopXml.Book"></bean>
        <bean id="bookProxy" class="cn.xs.spring5.Aop.aopxml.BookProxy"></bean>
    
        
        <aop:config>
            
            <aop:pointcut id="p" expression="execution(* cn.xs.spring5.aopxml.Book.buy(..))"/>
            
            <aop:aspect ref="bookProxy">
                
                <aop:before method="before" pointcut-ref="p"></aop:before>
            </aop:aspect>
        </aop:config>
    </beans>

#### （4）测试 ####

@Test
        public void TestAop2(){
            ApplicationContext context = new ClassPathXmlApplicationContext("Bean2.xml");
            Book book = context.getBean("book", Book.class);
            book.buy();
        }

####  ####

#### 完全使用注解开发 ####

*  创建配置类，不需要创建xml配置文件

@Configuration
    @ComponentScan(basePackages = {"cn.xs"})
    @EnableAspectJAutoProxy(proxyTargetClass = true)
    public class ConfigAop {
    }