一、导入依赖：
<!-- SpringIOC -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>5.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>5.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>5.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>5.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.0.2.RELEASE</version>
</dependency>
<!-- SpringAOP -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>5.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>aopalliance</groupId>
<artifactId>aopalliance</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.7</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.2</version>
</dependency>
二、通知类：
@Component @Aspect public class Log { @Pointcut("execution( * com.qf.aop..*(..))") public void logPointCut() { } @Before("logPointCut()") public void before() { System.out.println("前置通知"); } @AfterReturning("logPointCut()") public void afterReturning() { System.out.println("后置通知(方法不出现异常)"); } @AfterThrowing("logPointCut()") public void afterException() { System.out.println("异常通知"); } @After("logPointCut()") public void after() { System.out.println("最终通知(方法不出现异常)"); } @Around("logPointCut()") public Object around(ProceedingJoinPoint point) throws Throwable { System.out.println("这是环绕通知之前的部分"); Object proceed=null; try { proceed = point.proceed(); System.out.println("这是环绕通知之后的部分"); }catch (Exception e){ System.out.println(e.getMessage()); System.out.println("这是环绕通知异常的部分"); }finally { System.out.println("这是最终通知"); } return proceed; } }
三、被增强类：
@Component public class UserManager { public void addStudent(User user) { //System.out.println(3/0); System.out.println("增加用户"); } }
四、application-context.xml：
<?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:bean="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spring-IOC注解扫描--> <bean:component-scan base-package="com.qf" /> <!-- 开启spring-aop注解--> <aop:aspectj-autoproxy ></aop:aspectj-autoproxy> </beans>
五、测试：
public class T { public static void main(String[] args) { ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("application-context.xml"); UserManager userManager = context.getBean("userManager",UserManager.class); userManager.addStudent(new User()); } }
六、注意点：
使用注解配置：最终通知会再后置通知之前，但是环绕通知还是照常；
原文：https://www.cnblogs.com/Tractors/p/11333448.html