springAOP 学习

maven引入

 <properties>
        <org.springframework.version>4.3.7.RELEASE</org.springframework.version>
    </properties>

<dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>
        <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>${org.springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>

xml配置：

<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-4.0.xsd">

    <context:component-scan base-package="spring.aop"></context:component-scan>

    <aop:aspectj-autoproxy></aop:aspectj-autoproxy>

</beans>

要实现的方法忽略，

切入的方法：

@Aspect
@Component
public class LoggingAspect {

    @Before("execution(public int spring.aop.jiajian.jia())")
    public void beforeMethod(JoinPoint joinPoint){
        System.out.println("方法前打印:"+joinPoint.getSignature().getName());
    }

    public void afterMethod(){
        System.out.println("方法后打印");
    }
}

测试：

    public static void main(String[] args) {
        ApplicationContext applicationContext =new ClassPathXmlApplicationContext("bean-genne.xml");
        jiajian jj =applicationContext.getBean(jiajian.class);
        int result =jj.jia();
        System.out.println(result);

    }

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