Spring Boot如何通过自定义注解实现日志打印详解

<!--lombok-->
<dependency>
 <groupId>org.projectlombok</groupId>
 <artifactId>lombok</artifactId>
 <version>1.18.2</version>
 <optional>true</optional>
</dependency>

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

/**
* 自定义注解用于打印Controller层方式日志
*/
@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.METHOD})
public @interface ControllerMethodLog {
}

@Slf4j
@Component
@Aspect
public class ControllerMethodLogAspect {

 @Pointcut("@annotation(com.xiyuan.demo.annotation.ControllerMethodLog)")
 public void pointCut() {
 }

 /**
 * 在切点运行前执行该方法
 */
 @Before("pointCut()")
 public void doBefore(JoinPoint joinPoint) {
 MethodSignature signature = (MethodSignature) joinPoint.getSignature();
 Method method = signature.getMethod();
 ControllerMethodLog annotation = method.getAnnotation(ControllerMethodLog.class);
 if (Objects.isNull(annotation)) {
  return;
 }
 String methodName = method.getDeclaringClass().getSimpleName() + "." + method.getName();
 log.info("start {}：入参：{}", methodName, JSON.toJSONString(joinPoint.getArgs()));
 }


 /**
 * 在切点运行后,无异常时执行该方法
 *
 * @param joinPoint
 * @param result
 */
 @AfterReturning(value = "pointCut()", returning = "result")
 public void afterReturn(JoinPoint joinPoint, Object result) {
 MethodSignature signature = (MethodSignature) joinPoint.getSignature();
 Method method = signature.getMethod();
 ControllerMethodLog annotation = method.getAnnotation(ControllerMethodLog.class);
 if (Objects.isNull(annotation)) {
  return;
 }
 String methodName = method.getDeclaringClass().getSimpleName() + "." + method.getName();
 log.info("end {}：响应：{}", methodName, JSON.toJSONString(result));
 }


}

@GetMapping("/getUserById")
@ApiOperation(value = "根据用户id获取用户")
@ControllerMethodLog
public ResponseResult getUserById(@RequestParam(name = "id", required = true) String id) {
 UserInfoPojo userInfoPojo = userService.getUserById(id);
 return ResponseResult.success(userInfoPojo, ConstantsUtil.QUERY_SUCCESS);
}