@Target({ElementType.METHOD,ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
public @interface Clear {
    Class<? extends HandlerInterceptor>[] value() default {};
}

public class ApiInterceptor implements HandlerInterceptor {

  //只列出主要代码
    @Override
    public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o) throws Exception {
        HandlerMethod m= (HandlerMethod) o;
        Method method=m.getMethod();
      	//判断是否用注解清除
        if(clearedByAnnotation(method)){
            return true;
        }
      
      	//其他操作，比如验证token

        httpServletResponse.sendRedirect("/api/error/401");
        return false;
    }

    private boolean clearedByAnnotation(Method method){
        Clear clear=method.getAnnotation(Clear.class);
        if(clear!=null){
            if(Arrays.asList(clear.value()).contains(ApiInterceptor.class)){
                return true;
            }
        }
        Class clazz=method.getDeclaringClass();
        clear= (Clear) clazz.getDeclaredAnnotation(Clear.class);
        if(clear!=null){
            if(Arrays.asList(clear.value()).contains(ApiInterceptor.class)){
                return true;
            }
        }
        return false;
    }
}

@RestController
@RequestMapping("/api/user")
public class UserApi {
  
  @PostMapping("/login/{code}")
  @Clear(ApiInterceptor.class)
  public Res doLogin(@PathVariable String code, HttpServletRequest req){
    // TODO
    return Res.ok;
  }
}

@RestController
@RequestMapping("/api/error")
@Clear({ApiInterceptor.class,AdminInterceptor.class})
public class ErrorApi {
  
  @RequestMapping("/{code}")
  public Res error(@PathVariable int code){
    return Res.fail.code(code);
  }
}