配置AOP

添加依赖

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

Service层

@Service
public class UserService {
    public String getUsernameById(Integer id){
        System.out.println("getUsernameById");
        return "java";
    }
    public void deleteUserById(Integer id){
        System.out.println("deleteUserById");
    }
}

Controller层

@RestController
public class UserController {
    @Autowired
    UserService userService;

    @GetMapping("/test1")
    public String getUsernameById(Integer id){
        return userService.getUsernameById(id);
    }

    @GetMapping("/test2")
    public void deleteUserById(Integer id){
        userService.deleteUserById(id);
    }
}

@Component
@Aspect
public class LogComponent {
    //返回值任意 以com.qwl.myaop.service下所有的方法
    @Pointcut("execution(* com.qwl.myaop.service.*.*(..))")
    public void pc1(){

    }

    @Before(value = "pc1()")
    public void before(JoinPoint jp){
        String name= jp.getSignature().getName();
        System.out.println("before--"+name);
    }

    @After(value = "pc1()")
    public void after(JoinPoint jp){
        String name = jp.getSignature().getName();
        System.out.println("after--"+name);
    }

    @AfterReturning(value = "pc1()",returning="result")
    public void afterReturning(JoinPoint jp,Object result){
        String name=jp.getSignature().getName();
        System.out.println("afterReturning---"+name+"--------"+result);
    }

    @AfterThrowing(value = "pc1()",throwing = "e")
    public void afterThrowing(JoinPoint jp,Exception e){
        String name=jp.getSignature().getName();
        System.out.println("afterThrowing---"+name+"--------"+e.getMessage());
    }

    @Around("pc1()")
    public Object around(ProceedingJoinPoint pjp)throws Throwable{
        Object proceed = pjp.proceed();
        return "java 技术";
    }
}