Spring Gateway和Eureka的名称解析失败

Question

日安，

null

问题：

当网关有一个持有微服务IP地址的路由时，所有的路由都可以顺利运行。但我想要的是让网关解析来自Eureka服务器的服务ID。如果我这样做，它会抛出java.net.unknownHostException:my-micro-service:name resoultion中的临时失败。

问题：

@SpringBootApplication
@EnableEurekaClient
public class MyGatewayApplication {

  public static void main(String[] args) {
    SpringApplication.run(MyGatewayApplication.class, args);
  }
}

spring:
  application:
    name: my-gateway
  cloud:
    gateway:
      discovery:
        locator:
          lowerCaseServiceId: true
          enabled: true
      globalcors:
        corsConfigurations:
          '[/**]':
            allowedOrigins: "*"
            allowedMethods:
              - GET
              - POST
      routes:
        - id: my_route
          uri: http://MY-MICRO-SERVICE
          predicates:
            - Path=/test/**
server:
  port: 8999

info:
  app:
    properties: dev

错误

java.net.UnknownHostException: MY-MICRO-SERVICE: Temporary failure in name resolution
    at java.base/java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method) ~[na:na]
    at java.base/java.net.InetAddress$PlatformNameService.lookupAllHostAddr(InetAddress.java:929) ~[na:na]
    at java.base/java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1515) ~[na:na]
    at java.base/java.net.InetAddress$NameServiceAddresses.get(InetAddress.java:848) ~[na:na]
    at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1505) ~[na:na]
    at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1364) ~[na:na]
    at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1298) ~[na:na]
    at java.base/java.net.InetAddress.getByName(InetAddress.java:1248) ~[na:na]
    at io.netty.util.internal.SocketUtils$8.run(SocketUtils.java:146) ~[netty-common-4.1.36.Final.jar:4.1.36.Final]
...

Answer 1

问题已经解决。

我将“HTTP”更改为“LB”协议，这就解决了我的问题。根据我的理解，“LB”代表负载平衡。我的本地机器上没有活动的loadbalancer，但无论如何：这是有效的。

   - POST
      routes:
        - id: my_route
          uri: lb://MY-MICRO-SERVICE
          predicates:
            - Path=/test/**