SpringCloud GateWay 在全局过滤器中注入OpenFeign网关后无法启动

一、问题

当在gateway的全局过滤器GlobalFilter中注入OpenFeign接口的时候会一直卡在路由中，但是不会进一步，导致启动未成功也未报错失败

java 复制代码

2024-01-18 22:06:59.299  INFO 19000 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [After]
2024-01-18 22:06:59.300  INFO 19000 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [Before]
2024-01-18 22:06:59.300  INFO 19000 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [Between]
2024-01-18 22:06:59.300  INFO 19000 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [Cookie]
2024-01-18 22:06:59.300  INFO 19000 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [Header]
2024-01-18 22:06:59.300  INFO 19000 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [Host]
2024-01-18 22:06:59.300  INFO 19000 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [Method]
2024-01-18 22:06:59.300  INFO 19000 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [Path]
2024-01-18 22:06:59.300  INFO 19000 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [Query]
2024-01-18 22:06:59.300  INFO 19000 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [ReadBody]
2024-01-18 22:06:59.301  INFO 19000 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [RemoteAddr]
2024-01-18 22:06:59.301  INFO 19000 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [XForwardedRemoteAddr]
2024-01-18 22:06:59.301  INFO 19000 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [Weight]
2024-01-18 22:06:59.301  INFO 19000 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [CloudFoundryRouteService]

二、原因

在gateway网关中不能使用openfeign同步调用

三、解决方法

1、修改配置

java 复制代码

	由于配置了spring.cloud.gateway.discovery.locator.enabled = true导致，改为false或者去掉该配置，因为默认为false，但是该方案会导致动态路由不能加载，影响微服务调用。
    gateway:
      discovery:
        locator:
          enabled: false

2、添加@Lazy注解在client上面

在注入的AuthClient上面添加@Lazy注解

java 复制代码

    @Lazy
    @Autowired
    private AuthClient authClient;

全部代码：

java 复制代码

@Component
@Slf4j
public class GatewayGlobalFilter implements GlobalFilter, Ordered {
    @Autowired
    private AuthProperties authProperties;

    @Lazy
    @Autowired
    private AuthClient authClient;

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        //获取请求头的request

        List<String> excludePaths = authProperties.getExcludePaths();
        log.info(excludePaths.toString());
        //判断是否需要拦截
        ServerHttpRequest request = exchange.getRequest();
        RequestPath path = request.getPath();
        //如果不需要拦截则放行
        if(excludePaths.contains(path.toString())){
            return chain.filter(exchange);
        }
        //获取token
        String authorization = request.getHeaders()
                .getFirst("authorization");
        String token= authorization.replace("Bearer ","");

        // 验证token
        String userId = authClient.getUserId(token);
        if(userId==null){
            //设置响应码为401
            ServerHttpResponse response = exchange.getResponse();
            response.setStatusCode(HttpStatus.UNAUTHORIZED);
            return response.setComplete();
        }

        //放行
        return chain.filter(exchange);
    }

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

SpringCloud GateWay 在全局过滤器中注入OpenFeign网关后无法启动

一、问题

二、原因

1、修改配置

2、添加@Lazy注解在client上面

3、启动成功