必须指定 discovery-server-url 和有效的 URL

Question

我是新手，我正在开发一个示例 spring 云网关应用程序，我正在尝试通过服务名称访问我的微服务。下面我添加了我的依赖项。这里有一个类似的问题，但没有被接受的答案，给出的答案和评论对我不起作用。

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.6.6</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>11</java.version>
        <spring-cloud.version>2021.0.6</spring-cloud.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-circuitbreaker-resilience4j</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-kubernetes</artifactId>
            <version>1.1.5.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
            <version>3.0.2</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-kubernetes-ribbon</artifactId>
            <version>1.1.5.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-loadbalancer</artifactId>
            <version>4.0.2</version>
        </dependency>


        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

然后我的应用程序 yaml 文件如下所示。

spring:
  application.name: gateway
  cloud:
    kubernetes:
      discovery:
        enabled: true
        all-namespaces: false
        include-not-ready-addresses: true
    gateway:
      discovery:
        locator:
          enabled: true
          lowerCaseServiceId: true

server:
  port: 8088
logging:
  level:
    org.springframework.cloud.gateway: TRACE
    org.springframework.cloud.loadbalancer: TRACE
management:
  endpoints:
    web:
      exposure:
        include: '*'
  endpoint:
    health:
      enabled: true
    info:
      enabled: true

我在主文件中添加了如下所示的@EnableDiscoveryClient 注释。

@SpringBootApplication
@EnableDiscoveryClient
@RestController
public class DemoApplication {

    @Autowired
    private DiscoveryClient discoveryClient;

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

    @GetMapping("/services")
    public List<String> services() {
        return this.discoveryClient.getServices();
    }
}

但是当我尝试全新安装时，出现以下错误。

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2023-04-11 13:03:56.489 ERROR 8096 --- [           main] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'discoveryClientRouteDefinitionLocator' defined in class path resource [org/springframework/cloud/gateway/discovery/GatewayDiscoveryClientAutoConfiguration$ReactiveDiscoveryClientRouteDefinitionLocatorConfiguration.class]: Unsatisfied dependency expressed through method 'discoveryClientRouteDefinitionLocator' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'reactiveCompositeDiscoveryClient' defined in class path resource [org/springframework/cloud/client/discovery/composite/reactive/ReactiveCompositeDiscoveryClientAutoConfiguration.class]: Unsatisfied dependency expressed through method 'reactiveCompositeDiscoveryClient' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'kubernetesReactiveDiscoveryClient' defined in class path resource [org/springframework/cloud/kubernetes/discovery/KubernetesDiscoveryClientAutoConfiguration$Reactive.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.client.discovery.ReactiveDiscoveryClient]: Factory method 'kubernetesReactiveDiscoveryClient' threw exception; nested **exception is org.springframework.cloud.kubernetes.discovery.DiscoveryServerUrlInvalidException: spring.cloud.kubernetes.discovery-server-url must be specified and a valid URL.**
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:800) ~[spring-beans-5.3.18.jar:5.3.18]

我看到有这样的配置 -> kubernetes.discovery.discovery-server-url: ""。但我无法理解的是我应该把什么作为服务器网址放在这里。请注意——我正在使用 minikube 在本地部署我的应用程序。