连接点
泛指类中的方法
切入点
通知
通知 按照被抽取的代码位置 分为
引入
目标对象
代理对象
织入
切面
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<spring.version>5.2.8.RELEASE</spring.version>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-aop -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>1.6.11</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.6.11</version>
</dependency>
</dependencies>
<?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"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
<aop:config>
<aop:aspect ref="advice">
<aop:before method="printOne" pointcut="execution(public void org.example.TargetObject.print2())"/>
</aop:aspect>
</aop:config>
<bean id="target" class="org.example.TargetObject"></bean>
<bean id="advice" class="org.example.Advice"></bean>
</beans>
package org.example;
/**
* @author by xKing
* @create on 2020/10/30 21:21
*/
public class TargetObject {
public void print2() {
System.out.println("我是目标对象");
System.out.println("3");
}
public void print3() {
System.out.println("2");
System.out.println("3");
}
}
package org.example;
/**
* @author by xKing
* @create on 2020/10/30 21:22
*/
public class Advice {
public void printOne() {
System.out.println("我是通知");
}
}
package org.example;
import org.springframework.context.support.ClassPathXmlApplicationContext;
/**
* Hello world!
*/
public class App {
public static void main(String[] args) {
ClassPathXmlApplicationContext cat = new ClassPathXmlApplicationContext("applicationContext.xml");
Object target = cat.getBean("target");
((TargetObject) target).print2();
System.out.println("Hello World!");
}
}
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Hello World!
Process finished with exit code 0