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2020-12-26

960

```java
<dependencies>
		<dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-aop</artifactId>
		</dependency>
	</dependencies>
---------------------------------------------------------------
@Aspect
@Component
public class MyAspect {

@Pointcut(value = "execution(* com.hhzjl.springboot01.service.*.*(..))")
    public void pc(){
    }

//@Before(value = "pc()")
    public void before(){
        System.out.println("方法开始执行....");
    }

//@After(value = "pc()")
    public void after(){
        System.out.println("方法执行结束....");
    }

@Around(value = "pc()")
    public void  around(ProceedingJoinPoint joinPoint) throws Throwable {
        System.out.println("--------------"+joinPoint);
        before();
		String res=(String)joinPoint.proceed();
        System.out.println(joinPoint.getSignature().getName()+"方法的返回值是"+res);
        after();

}

@AfterThrowing(value = "pc()",throwing = "tw")
    public void error(Throwable tw){
        System.out.println("方法出现异常了");
    }
}

```

Springboot

springboot-aop

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