Java 如何在SpringCloud中使用ConsultDiscoveryClient与Zuul和Sidecar

我正在尝试使用SpringCloud微服务架构和Netflix的Sidecar和Zuul组件

将部署服务的环境已经有一个正在运行的领事服务，可用于服务发现和配置。这意味着我可以从示例中删除config服务和eureka

我现在正尝试使用以下代码将api网关微服务连接到Consor：

@SpringBootApplication
@EnableSidecar
@EnableDiscoveryClient
public class GatewayApplication {

    @Autowired
    @Qualifier("consulDiscoveryClient")
    DiscoveryClient discovery;

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

这将导致以下异常：

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'gatewayApplication.MyZuulProxyConfiguration': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.springframework.cloud.client.discovery.DiscoveryClient org.springframework.cloud.netflix.zuul.ZuulProxyConfiguration.discovery; nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [org.springframework.cloud.client.discovery.DiscoveryClient] is defined: expected single matching bean but found 2: consulDiscoveryClient,discoveryClient
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:305)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:301)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:196)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:368)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1123)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1018)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:305)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:301)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:201)
    at org.springframework.boot.context.embedded.ServletContextInitializerBeans.getOrderedBeansOfType(ServletContextInitializerBeans.java:209)
    at org.springframework.boot.context.embedded.ServletContextInitializerBeans.addServletContextInitializerBeans(ServletContextInitializerBeans.java:85)
    at org.springframework.boot.context.embedded.ServletContextInitializerBeans.<init>(ServletContextInitializerBeans.java:73)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.getServletContextInitializerBeans(EmbeddedWebApplicationContext.java:234)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.selfInitialize(EmbeddedWebApplicationContext.java:221)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.access$000(EmbeddedWebApplicationContext.java:84)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext$1.onStartup(EmbeddedWebApplicationContext.java:206)
    at org.springframework.boot.context.embedded.tomcat.TomcatStarter.onStartup(TomcatStarter.java:54)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5156)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    ... 1 more
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.springframework.cloud.client.discovery.DiscoveryClient org.springframework.cloud.netflix.zuul.ZuulProxyConfiguration.discovery; nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [org.springframework.cloud.client.discovery.DiscoveryClient] is defined: expected single matching bean but found 2: consulDiscoveryClient,discoveryClient
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:571)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
    ... 32 more
Caused by: org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [org.springframework.cloud.client.discovery.DiscoveryClient] is defined: expected single matching bean but found 2: consulDiscoveryClient,discoveryClient
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1079)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:967)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:543)
    ... 34 more

application.yml：

server:
  port: 10000

endpoints:
  restart:
    enabled: true
  shutdown:
    enabled: true
  health:
    sensitive: false

---

有人能告诉我如何使用SpringCloud和Concur作为发现和配置服务来创建AANAPI网关吗

您应该使用

@EnalbeZuulProxy

，侧车用于非java服务，用作服务发现客户端

@EnalbeZuulProxy

还将为您启用发现客户端

另外，您的错误清楚地表明您正在尝试通过接口自动连接

DiscoveryClient

，并且您的上下文中已经有两个。一个是spring boot自动配置，另一个是您创建的

您不应该自己创建客户机，因为如果类路径上有适当的依赖项，则自动配置将为您完成这项工作

工作领事客户示例：

---

您为什么要与领事一起使用侧车？sidecar存在的原因是eureka是基于JVM的。因为领事不是，它本身就是一个副手。谢谢你的反应。我的错误是，我认为Sidecar是API网关的必要部分。事实上，Zuul就是那个。非常感谢你的回答。使用

@EnableZuulProxy

而不尝试连接DiscoveryClient本人确实完成了这项工作。试图亲自接线是SpringCloud无法选择自己的一种反应。我还删除了

@EnableSidecar

注释和上文@spencergibb建议的作为依赖项的Sidecar。

spring:
  application:
    name: gateway
  cloud:
    consul:
      host: consul
      port: 8500
      config:
        enabled: true

encrypt:
  failOnError: false

server:
  port: 10000

endpoints:
  restart:
    enabled: true
  shutdown:
    enabled: true
  health:
    sensitive: false