Spring API网关Java . net . connect异常:连接超时:没有进一步的信息

Question

我有一个Spring启动应用程序，具有简单的GET方法“sayHello”，我已经配置了API网关，以便在uri模式匹配/ ms1 /**时路由对我的微服务模块的调用

网关和微服务都已注册到注册表服务，仪表板显示都已注册

API-GATEAY YAML配置

server:
  port: '8010'
spring:
  application:
    name: MY-GATEWAY
  cloud:
    compatibility-verifier:
      enabled: false
    gateway:
      routes:
        - id: MICRO-SERVICE1
          uri: lb://MICRO-SERVICE1
          predicates:
            - Path=/ms1/**
eureka:
  client:
    register-with-eureka: true
    fetch-registry: true
    service-uri: http://localhost:8761/eureka/
  intance:
    hostname: localhost

MICRO-SERVICE1 YAML配置

server:
  port: '8030'

spring:
  application:
    name: MICRO-SERVICE1
eureka:
  client:
    register-with-eureka: true
    fetch-registry: true
    service-uri: http://localhost:8761/eureka/
  intance:
    hostname: localhost

控制器的 GET 方法

@RestController
@RequestMapping("/ms1")
public class UATController {
    @GetMapping(value = "/sayHello")
    public @ResponseBody ResponseEntity<String> sayHello() {
        String message = "Hello World";
        return new ResponseEntity<String>(message, HttpStatus.OK);
    }
}

当我通过网关访问时，我遇到了以下错误，但是当我直接访问我的微服务时，它能正常工作吗？

• http://localhost:8010/ms1/sayHello

Wed Dec 07 23:32:31 EST 2021
[83b324d4-2] There was an unexpected error (type=Internal Server Error, status=500).
Connection timed out: no further information: DESKTOP-1.verizon.net/192.168.1.160:8030
io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection timed out: no further information: DESKTOP-1.verizon.net/192.168.1.160:8030
    Suppressed: The stacktrace has been enhanced by Reactor, refer to additional information below: 
Error has been observed at the following site(s):
    *__checkpoint ⇢ org.springframework.cloud.gateway.filter.WeightCalculatorWebFilter [DefaultWebFilterChain]
    *__checkpoint ⇢ org.springframework.boot.actuate.metrics.web.reactive.server.MetricsWebFilter [DefaultWebFilterChain]
    *__checkpoint ⇢ HTTP GET "/ms1/sayHello" [ExceptionHandlingWebHandler]
Original Stack Trace:
Caused by: java.net.ConnectException: Connection timed out: no further information
    at java.base/sun.nio.ch.Net.pollConnect(Native Method)
    at java.base/sun.nio.ch.Net.pollConnectNow(Net.java:672)
    at java.base/sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:946)
    at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:330)
    at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:334)
    at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:707)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
    at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:986)
    at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
    at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
    at java.base/java.lang.Thread.run(Thread.java:833)

Answer 1

已经在yml文件中为我添加了所有服务及其工作的设置。

尤里卡:实例:首选ip地址:真

Answer 2

将DESKTOP-1.verizon.net添加到hosts文件成功了，下面是我添加到C:\ Windows \ System32 \ drivers \ etc \ hosts文件中的条目。不幸的是，eureka . instance . prefer-IP-address = true对我不起作用

127.0.0.1   DESKTOP-1.verizon.net

Answer 3

今天，我在本地主机上运行微服务、网关和Eureka发现时也遇到了同样的问题。

我可以通过将< code > eureka . instance . preferip address = true 添加到我的应用程序来解决这个问题。该属性导致服务将通告它们的IP地址而不是主机名。第2.6点下有更多信息:https://cloud . spring . io/spring-cloud-网飞/multi/multi _ spring-cloud-eureka-server . html。我的猜测是，由于使用localhost，将请求转发到微服务时出现了问题。

编辑：这是我的设置。我的设置没有什么特别的。这些是我在application.properties微服务中使用的值：

spring.cloud.discovery.enabled=true
spring.application.name=[The name of my app]
eureka.client.register.with-eureka=true
eureka.client.service-url.defaultZone=http://localhost:8999/eureka
eureka.instance.prefer-ip-address=true

网关的属性类似于服务属性。负载平衡部分如下所示：

spring.cloud.gateway.routes[0].id=[Same name as my app]
spring.cloud.gateway.routes[0].uri=lb://[name of my app]
spring.cloud.gateway.routes[0].predicates=Path=/test/**

其中测试/** 是我的应用程序的其余 URL 的一部分