无法使用Spring云 API 网关

Question

我正在研究一个示例poc，我正在尝试集成Spring云api网关

在我的pom.xml中，我有

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.7.3</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.tek</groupId>
<artifactId>gatewayApplication</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>Gateway Application</name>
<description>Gateway Application for Spring Boot</description>
<properties>
    <java.version>1.8</java.version>
    <spring-cloud.version>2021.0.3</spring-cloud.version>
</properties>
<dependencies>
            <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-gateway</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
    </dependency>
</dependencies>
<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>${spring-cloud.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>

在我的应用程序中。yml我有

       server:
  port: 9191

spring:
  application:
    name: API-GATEWAY
  cloud:
    gateway:
      routes:
        - id: DEPARTMENT-SERVICE
          uri: lb://DEPARTMENT-SERVICE
          predicates:
            - Path=/departments/**
        - id: USER-SERVICE
          uri: lb://USER-SERVICE
          predicates:
              - Path=/user/**

在我的主课上

@SpringBootApplication
@EnableEurekaClient
public class GatewayApplication {

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

}

我能够直接从它们各自的端口访问服务，但是当我试图从端口网关端口ie 9191访问api时，我得到

***2022-09-08 16:23:34.644错误4128-[ctor-http-nio-3]a . w . r . e . abstracterrorwebexception handler:[7e 6 C1 CEC-3]500 http get "/user/getuser department/1 " Java . net . unknown hostexception的服务器错误:在io . netty . resolver . DNS . DNS resolvecontext . finishresolve(dnsresolvecontext)处进行5次查询后，未能解析' xxxxxxxx ' at io . netty . util . concurrent . default promise . setvalue 0(default promise . Java:616)~[netty-common-4 . 1 . 79 . final . jar:4 . 1 . 79 . final]at io . netty . util . concurrent . default promise . set failure 0(default promise . Java:609)~[netty-common-4 . 1 . 79 . final . jar:4 . 1 . 79 . final]at io . netty . util . concurrent . default

* 部门服务申请文件

server:
  port: 9001
spring:
  application:
    name: DEPARTMENT-SERVICE
  eureka:
    client:
      register-witheureka: true
      fetch-registry: true
      service-url:
        defaultZone: http://localhost:8761/eureka/
    instance:
      hostname: localhost
      prefer-ip-address: true

Answer 1

我通过添加eureka.instance解决了这个问题。首选ip address=true和eureka.instance。首选应用程序中的ip address=true。使用网关服务的所有微服务的属性。