切面类
package com.test.advice;
import org.aspectj.lang.ProceedingJoinPoint;
//增强类
public class MyAdvice {
//将这个增强方法切入到service层的add方法前
public void before()
{
System.out.println("添加用户之前");
}
}
目标类
package com.test.service;
public interface IUsersService {
public void add();
public void update();
public void delete();
}
package com.test.service.impl;
import com.test.service.IUsersService;
import org.springframework.stereotype.Service;
@Service
public class UsersService implements IUsersService {
@Override
public void add() {
System.out.println("添加用户...");
}
@Override
public void update() {
System.out.println("修改用户...");
}
@Override
public void delete() {
System.out.println("删除用户...");
}
}
spring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/aop
http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<!--开启包的扫描 -->
<context:component-scan base-package="com.test" />
<!-- 创建增强类对象 -->
<bean id="myAdvice" class="com.test.advice.MyAdvice" />
<!-- 织入 -->
<aop:config>
<!-- 定义切点-->
<aop:pointcut id="pc" expression="execution(* com.test.service.impl.*.add(..))" />
<!--切入 -->
<aop:aspect ref="myAdvice">
<!-- 将增强类对象myAdvice中的before方法切入到pc对应的切点所在的方法前面 -->
<aop:before method="before" pointcut-ref="pc" />
</aop:aspect>
</aop:config>
</beans>
依赖
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.example</groupId>
<artifactId>testSpring06</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>testSpring06 Maven Webapp</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.18.Release</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.3.18.Release</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.3.18.Release</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>4.3.18.Release</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>4.3.18.RELEASE</version>
</dependency>
<!-- aop -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.10</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>4.3.18.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>4.3.18.RELEASE</version>
</dependency>
</dependencies>
<build>
<finalName>testSpring06</finalName>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.1.0</version>
</plugin>
<!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.1</version>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>3.2.2</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
测试类
package com.test.testAop;
//import com.test.service.IItemsService;
import com.test.service.IUsersService;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class TestAop {
@Test
public void test()
{
ApplicationContext applicationContext=new ClassPathXmlApplicationContext("applicationContext.xml");
IUsersService usersServiceProxy=applicationContext.getBean("usersService", IUsersService.class);
try {
usersServiceProxy.add();
} catch (Exception e) {
e.printStackTrace();
}
}
测试结果