Gateway GlobalFilter全局过滤失效问题

本地环境:
SpringBoot_2.1.4
SpringCould_Greenwich.SR1

网关的yml配置很简单,主要是玩一下全局过滤的,所以就没有配置路由啥的

server:
  port: 9003
eureka:
  client:
    serviceUrl:
      defaultZone: "http://localhost:9001/eureka"

@Component
public class AuthFilter implements GlobalFilter, Ordered {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        String token = exchange.getRequest().getHeaders().getFirst("token");
        if ("token".equals(token)) {
            return chain.filter(exchange);
        }
        ServerHttpResponse response = exchange.getResponse();

        JSONObject jsonObject = new JSONObject();
        jsonObject.put("code","401");
        jsonObject.put("message","非法请求");
        byte[] datas = JSON.toJSONString(jsonObject).getBytes(StandardCharsets.UTF_8);
        DataBuffer buffer = response.bufferFactory().wrap(datas);
        response.setStatusCode(HttpStatus.UNAUTHORIZED);
        response.getHeaders().add("Content-Type", "application/json;charset=UTF-8");
        return response.writeWith(Mono.just(buffer));
    }

    @Override
    public int getOrder() {
        return 0;
    }
}

还有一个简单的controller验证拦截

@RestController
@RequestMapping("/test")
@Slf4j
public class TestController {
    @GetMapping("/fcy")
    public String test(){
        log.error("ok");
        return "okgatway";
    }
}

然后调用一下后发现直接输出了"okgatway"没有拦下来

作为资深的面向百度开发者 百度了半天发现好像没结果
最后发现还是需要匹配到路由才会触发

server:
  port: 9003
eureka:
  client:
    serviceUrl:
      defaultZone: "http://localhost:9001/eureka"

spring:
  cloud:
    gateway:
      routes:
        - id: first_route
          uri: https://127.0.0.1:9002
          predicates:
            - Path=/test/**

重新调用后发现ok了

网上相关GlobalFilter文章不多，也是自己试了一天瞎猫碰死耗子碰出来的