java AOP 面向切面编程例子

 

1. pom 引入aop jar

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>

2. 定义切面 Aspect

 

@Aspect
@Component // 这句不能少
public class TestAspect {
　　private Logger logger = Logger.getLogger(getClass());

　　@Pointcut("execution(* com.test.server1.controller.ComputerController.test(..))")
　　public void testPoint() {}

　　@Before(value="testPoint()")
　　public void handleBeforeMethod()
　　{
　　logger.info("handleBeforeMethod before");
　　}

　　@Around(value = "testPoint()")
　　public String handleAroundMethod(ProceedingJoinPoint joinPoint) throws Throwable
　　{
　　logger.info("handleAroundMethod Around");
　　return (String) joinPoint.proceed();
　　}

　　@After(value = "testPoint()")
　　public void handleAfterMethod()
　　{
　　logger.info("handleAfterMethod After");
　　}

}