微服务系列之SpringBoot基础：自定义注解

SpringBoot自定义注解一、在POM文件中添加aop依赖二、创建注解类三、创建拦截器四、自定义注解使用

	org.springframework.boot
   	spring-boot-starter-aop

@Target(value = ElementType.METHOD)
@Retention(value = RetentionPolicy.RUNTIME)
@documented
public @interface ValidateApiNotAuth {
}

在拦截器中判断若使用了@ValidateApiNotAuth注解的方法，则不作权限校验。

@Slf4j
public class WebInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object handler) throws Exception {
        String uri = httpServletRequest.getRequestURI();
        String appkey = httpServletRequest.getHeader(C.API_HEADER_PARAM_APPKEY);
        String timestamp = httpServletRequest.getHeader(C.API_HEADER_PARAM_TIMESTAMP);
        String sign = httpServletRequest.getHeader(C.API_HEADER_PARAM_SIGN);

        //标识 不需检查 的注解
        if (handler instanceof HandlerMethod) {
            HandlerMethod h = (HandlerMethod) handler;
            ValidateApiNotAuth methodAnnotation = h.getMethodAnnotation(ValidateApiNotAuth.class);
            if (methodAnnotation != null)
                return true;
        }
		//此处省略其它逻辑
		return false;
    }
}

@Configuration
public class WebAppConfig implements WebMvcConfigurer{

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        // 配置请求拦截器
        registry.addInterceptor(new WebInterceptor()).addPathPatterns("/api/**");
    }
}

在不需要做权限校验的方法上添加@ValidateApiNotAuth注解。

 @PostMapping("/uploadVideo")
 @ApiOperation(value = "视频文件上传", notes = "上传视频文件至服务器", httpMethod = "POST")
 @ValidateApiNotAuth
 public void uploadVideo(
         @ApiParam(required = true, value = "视频文件") @RequestParam(required = true) MultipartFile file
 ) throws IOException {
   //此处省略具体逻辑
 }