Spring boot 2.4.3 和 Cloud 2020.0.1 中未禁用 Ribbon 负载平衡器客户端。使用 Consul 代替负载均衡
Ribbon load balancer client not disabling in Spring boot 2.4.3 & Cloud 2020.0.1. Using Consul for load balancing instead
我目前正在为我的实习开发一个微服务应用程序，使用 Consul 进行服务发现并伪装客户端以在服务之间进行通信。
当我们开始处理已经使用微服务构建的现有项目时，我们将 Spring boot 升级到 2.4.3 并将 cloud 升级到 2020.0.1，这样我们就可以利用 Java 15 来使用记录而不是 dtos 的正常 类。
我们现在遇到的问题是，每当我们调用复合服务时，它都会尝试从多个服务（例如用户和团队服务）检索数据，我们会得到以下堆栈跟踪：
21-05-25 Tue 09:15:13.368 ERROR request UT005023: Exception handling request to /new/create/team
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.retry.RetryException: Could not recover; nested exception is java.lang.AbstractMethodError: Receiver class org.springframework.cloud.netflix.ribbon.RibbonLoadBalancerClient does not define or inherit an implementation of the resolved method 'abstract org.springframework.cloud.client.ServiceInstance choose(java.lang.String, org.springframework.cloud.client.loadbalancer.Request)' of interface org.springframework.cloud.client.loadbalancer.ServiceInstanceChooser.
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014) ~[spring-webmvc-5.3.4.jar:5.3.4]
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) ~[spring-webmvc-5.3.4.jar:5.3.4]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:517) ~[jakarta.servlet-api-4.0.4.jar:4.0.4]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.4.jar:5.3.4]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:584) ~[jakarta.servlet-api-4.0.4.jar:4.0.4]
at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:74) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.4.jar:5.3.4]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.4.jar:5.3.4]
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.4.jar:5.3.4]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.4.jar:5.3.4]
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:93) ~[spring-boot-actuator-2.4.3.jar:2.4.3]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.4.jar:5.3.4]
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.4.jar:5.3.4]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.4.jar:5.3.4]
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.ServletChain.handleRequest(ServletChain.java:68) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.RedirectDirHandler.handleRequest(RedirectDirHandler.java:68) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:117) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) ~[undertow-core-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46) ~[undertow-core-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60) ~[undertow-core-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43) ~[undertow-core-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) ~[undertow-core-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.SendErrorPageHandler.handleRequest(SendErrorPageHandler.java:52) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) ~[undertow-core-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:269) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.access0(ServletInitialHandler.java:78) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.call(ServletInitialHandler.java:133) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.call(ServletInitialHandler.java:130) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.core.ServletRequestContextThreadSetupAction.call(ServletRequestContextThreadSetupAction.java:48) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.core.ContextClassLoaderSetupAction.call(ContextClassLoaderSetupAction.java:43) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:249) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.access[=11=]0(ServletInitialHandler.java:78) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.handleRequest(ServletInitialHandler.java:99) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:387) ~[undertow-core-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.server.HttpServerExchange.run(HttpServerExchange.java:841) ~[undertow-core-2.2.4.Final.jar:2.2.4.Final]
at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35) ~[jboss-threads-3.1.0.Final.jar:3.1.0.Final]
at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:2019) ~[jboss-threads-3.1.0.Final.jar:3.1.0.Final]
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1558) ~[jboss-threads-3.1.0.Final.jar:3.1.0.Final]
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1449) ~[jboss-threads-3.1.0.Final.jar:3.1.0.Final]
at java.base/java.lang.Thread.run(Thread.java:832) ~[na:na]
Caused by: org.springframework.retry.RetryException: Could not recover; nested exception is java.lang.AbstractMethodError: Receiver class org.springframework.cloud.netflix.ribbon.RibbonLoadBalancerClient does not define or inherit an implementation of the resolved method 'abstract org.springframework.cloud.client.ServiceInstance choose(java.lang.String, org.springframework.cloud.client.loadbalancer.Request)' of interface org.springframework.cloud.client.loadbalancer.ServiceInstanceChooser.
at org.springframework.cloud.client.loadbalancer.LoadBalancedRecoveryCallback.recover(LoadBalancedRecoveryCallback.java:56) ~[spring-cloud-commons-3.0.1.jar:3.0.1]
at org.springframework.retry.support.RetryTemplate.handleRetryExhausted(RetryTemplate.java:539) ~[spring-retry-1.3.1.jar:na]
at org.springframework.retry.support.RetryTemplate.doExecute(RetryTemplate.java:387) ~[spring-retry-1.3.1.jar:na]
at org.springframework.retry.support.RetryTemplate.execute(RetryTemplate.java:225) ~[spring-retry-1.3.1.jar:na]
at org.springframework.cloud.openfeign.loadbalancer.RetryableFeignBlockingLoadBalancerClient.execute(RetryableFeignBlockingLoadBalancerClient.java:103) ~[spring-cloud-openfeign-core-3.0.1.jar:3.0.1]
at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:119) ~[feign-core-10.10.1.jar:na]
at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:89) ~[feign-core-10.10.1.jar:na]
at feign.ReflectiveFeign$FeignInvocationHandler.invoke(ReflectiveFeign.java:100) ~[feign-core-10.10.1.jar:na]
at com.sun.proxy.$Proxy131.createParticipant(Unknown Source) ~[na:na]
at be.jarchitects.be.usercomposite.controllers.RegistrationController.createTeamAndUser(RegistrationController.java:25) ~[classes/:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:197) ~[spring-web-5.3.4.jar:5.3.4]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:141) ~[spring-web-5.3.4.jar:5.3.4]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106) ~[spring-webmvc-5.3.4.jar:5.3.4]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:894) ~[spring-webmvc-5.3.4.jar:5.3.4]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808) ~[spring-webmvc-5.3.4.jar:5.3.4]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.3.4.jar:5.3.4]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1060) ~[spring-webmvc-5.3.4.jar:5.3.4]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:962) ~[spring-webmvc-5.3.4.jar:5.3.4]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.4.jar:5.3.4]
... 54 common frames omitted
Caused by: java.lang.AbstractMethodError: Receiver class org.springframework.cloud.netflix.ribbon.RibbonLoadBalancerClient does not define or inherit an implementation of the resolved method 'abstract org.springframework.cloud.client.ServiceInstance choose(java.lang.String, org.springframework.cloud.client.loadbalancer.Request)' of interface org.springframework.cloud.client.loadbalancer.ServiceInstanceChooser.
at org.springframework.cloud.openfeign.loadbalancer.RetryableFeignBlockingLoadBalancerClient.lambda$execute(RetryableFeignBlockingLoadBalancerClient.java:126) ~[spring-cloud-openfeign-core-3.0.1.jar:3.0.1]
at org.springframework.retry.support.RetryTemplate.doExecute(RetryTemplate.java:329) ~[spring-retry-1.3.1.jar:na]
... 74 common frames omitted
Feign 默认使用 ribbon 进行负载均衡，但 Consul 已经对传入请求进行了负载均衡。
我们在配置服务中使用 spring.cloud.consul.loadbalancer.ribbon.enabled: false 禁用了 ribbon，但我读过一些帖子，有人使用相同的 spring 版本，有类似的问题，并且 ribbon loadbalancer 没有' 似乎禁用。在 spring 引导的 github 上也说明了一些 netflix 模块已被删除的重大更改，所以我认为这与问题有关：https://github.com/spring-cloud/spring-cloud-release/wiki/Spring-Cloud-2020.0-Release-Notes#known-issues
配置服务中的配置已正确提供，它在日志中如此说明，我还使用一些随机端口对其进行了测试，它们似乎都正确应用了它。将 属性 放在 bootstrap yaml 中也不起作用。
Spring cloud loadbalancer 似乎是 ribbon 的新替代品，但为了使用它，您需要能够通过前面提到的选项禁用 ribbon，但由于某种原因它似乎不起作用。
问题是我们不能在不丢失记录的情况下真正降级，而且我真的没有在任何地方看到修复，或者我可能只是忽略了一些愚蠢的东西。
编辑：从 spring-cloud-starter-consul-discovery 中排除 spring-cloud-starter-netflix-ribbon 为我们解决了这个问题！
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-consul-discovery</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
</exclusion>
</exclusions>
</dependency>
你可以尝试排除功能区依赖性，如下所示
implementation('org.springframework.cloud:spring-cloud-starter-consul-discovery') {
exclude group: 'org.springframework.cloud', module: 'spring-cloud-starter-netflix-ribbon'
}
我目前正在为我的实习开发一个微服务应用程序，使用 Consul 进行服务发现并伪装客户端以在服务之间进行通信。 当我们开始处理已经使用微服务构建的现有项目时，我们将 Spring boot 升级到 2.4.3 并将 cloud 升级到 2020.0.1，这样我们就可以利用 Java 15 来使用记录而不是 dtos 的正常 类。 我们现在遇到的问题是，每当我们调用复合服务时，它都会尝试从多个服务（例如用户和团队服务）检索数据，我们会得到以下堆栈跟踪：
21-05-25 Tue 09:15:13.368 ERROR request UT005023: Exception handling request to /new/create/team
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.retry.RetryException: Could not recover; nested exception is java.lang.AbstractMethodError: Receiver class org.springframework.cloud.netflix.ribbon.RibbonLoadBalancerClient does not define or inherit an implementation of the resolved method 'abstract org.springframework.cloud.client.ServiceInstance choose(java.lang.String, org.springframework.cloud.client.loadbalancer.Request)' of interface org.springframework.cloud.client.loadbalancer.ServiceInstanceChooser.
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014) ~[spring-webmvc-5.3.4.jar:5.3.4]
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) ~[spring-webmvc-5.3.4.jar:5.3.4]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:517) ~[jakarta.servlet-api-4.0.4.jar:4.0.4]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.4.jar:5.3.4]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:584) ~[jakarta.servlet-api-4.0.4.jar:4.0.4]
at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:74) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.4.jar:5.3.4]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.4.jar:5.3.4]
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.4.jar:5.3.4]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.4.jar:5.3.4]
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:93) ~[spring-boot-actuator-2.4.3.jar:2.4.3]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.4.jar:5.3.4]
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.4.jar:5.3.4]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.4.jar:5.3.4]
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.ServletChain.handleRequest(ServletChain.java:68) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.RedirectDirHandler.handleRequest(RedirectDirHandler.java:68) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:117) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) ~[undertow-core-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46) ~[undertow-core-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60) ~[undertow-core-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43) ~[undertow-core-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) ~[undertow-core-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.SendErrorPageHandler.handleRequest(SendErrorPageHandler.java:52) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) ~[undertow-core-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:269) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.access0(ServletInitialHandler.java:78) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.call(ServletInitialHandler.java:133) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.call(ServletInitialHandler.java:130) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.core.ServletRequestContextThreadSetupAction.call(ServletRequestContextThreadSetupAction.java:48) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.core.ContextClassLoaderSetupAction.call(ContextClassLoaderSetupAction.java:43) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:249) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.access[=11=]0(ServletInitialHandler.java:78) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.handleRequest(ServletInitialHandler.java:99) ~[undertow-servlet-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:387) ~[undertow-core-2.2.4.Final.jar:2.2.4.Final]
at io.undertow.server.HttpServerExchange.run(HttpServerExchange.java:841) ~[undertow-core-2.2.4.Final.jar:2.2.4.Final]
at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35) ~[jboss-threads-3.1.0.Final.jar:3.1.0.Final]
at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:2019) ~[jboss-threads-3.1.0.Final.jar:3.1.0.Final]
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1558) ~[jboss-threads-3.1.0.Final.jar:3.1.0.Final]
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1449) ~[jboss-threads-3.1.0.Final.jar:3.1.0.Final]
at java.base/java.lang.Thread.run(Thread.java:832) ~[na:na]
Caused by: org.springframework.retry.RetryException: Could not recover; nested exception is java.lang.AbstractMethodError: Receiver class org.springframework.cloud.netflix.ribbon.RibbonLoadBalancerClient does not define or inherit an implementation of the resolved method 'abstract org.springframework.cloud.client.ServiceInstance choose(java.lang.String, org.springframework.cloud.client.loadbalancer.Request)' of interface org.springframework.cloud.client.loadbalancer.ServiceInstanceChooser.
at org.springframework.cloud.client.loadbalancer.LoadBalancedRecoveryCallback.recover(LoadBalancedRecoveryCallback.java:56) ~[spring-cloud-commons-3.0.1.jar:3.0.1]
at org.springframework.retry.support.RetryTemplate.handleRetryExhausted(RetryTemplate.java:539) ~[spring-retry-1.3.1.jar:na]
at org.springframework.retry.support.RetryTemplate.doExecute(RetryTemplate.java:387) ~[spring-retry-1.3.1.jar:na]
at org.springframework.retry.support.RetryTemplate.execute(RetryTemplate.java:225) ~[spring-retry-1.3.1.jar:na]
at org.springframework.cloud.openfeign.loadbalancer.RetryableFeignBlockingLoadBalancerClient.execute(RetryableFeignBlockingLoadBalancerClient.java:103) ~[spring-cloud-openfeign-core-3.0.1.jar:3.0.1]
at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:119) ~[feign-core-10.10.1.jar:na]
at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:89) ~[feign-core-10.10.1.jar:na]
at feign.ReflectiveFeign$FeignInvocationHandler.invoke(ReflectiveFeign.java:100) ~[feign-core-10.10.1.jar:na]
at com.sun.proxy.$Proxy131.createParticipant(Unknown Source) ~[na:na]
at be.jarchitects.be.usercomposite.controllers.RegistrationController.createTeamAndUser(RegistrationController.java:25) ~[classes/:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:197) ~[spring-web-5.3.4.jar:5.3.4]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:141) ~[spring-web-5.3.4.jar:5.3.4]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106) ~[spring-webmvc-5.3.4.jar:5.3.4]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:894) ~[spring-webmvc-5.3.4.jar:5.3.4]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808) ~[spring-webmvc-5.3.4.jar:5.3.4]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.3.4.jar:5.3.4]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1060) ~[spring-webmvc-5.3.4.jar:5.3.4]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:962) ~[spring-webmvc-5.3.4.jar:5.3.4]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.4.jar:5.3.4]
... 54 common frames omitted
Caused by: java.lang.AbstractMethodError: Receiver class org.springframework.cloud.netflix.ribbon.RibbonLoadBalancerClient does not define or inherit an implementation of the resolved method 'abstract org.springframework.cloud.client.ServiceInstance choose(java.lang.String, org.springframework.cloud.client.loadbalancer.Request)' of interface org.springframework.cloud.client.loadbalancer.ServiceInstanceChooser.
at org.springframework.cloud.openfeign.loadbalancer.RetryableFeignBlockingLoadBalancerClient.lambda$execute(RetryableFeignBlockingLoadBalancerClient.java:126) ~[spring-cloud-openfeign-core-3.0.1.jar:3.0.1]
at org.springframework.retry.support.RetryTemplate.doExecute(RetryTemplate.java:329) ~[spring-retry-1.3.1.jar:na]
... 74 common frames omitted
Feign 默认使用 ribbon 进行负载均衡，但 Consul 已经对传入请求进行了负载均衡。
我们在配置服务中使用 spring.cloud.consul.loadbalancer.ribbon.enabled: false 禁用了 ribbon，但我读过一些帖子，有人使用相同的 spring 版本，有类似的问题，并且 ribbon loadbalancer 没有' 似乎禁用。在 spring 引导的 github 上也说明了一些 netflix 模块已被删除的重大更改，所以我认为这与问题有关：https://github.com/spring-cloud/spring-cloud-release/wiki/Spring-Cloud-2020.0-Release-Notes#known-issues 配置服务中的配置已正确提供，它在日志中如此说明，我还使用一些随机端口对其进行了测试，它们似乎都正确应用了它。将 属性 放在 bootstrap yaml 中也不起作用。 Spring cloud loadbalancer 似乎是 ribbon 的新替代品，但为了使用它，您需要能够通过前面提到的选项禁用 ribbon，但由于某种原因它似乎不起作用。 问题是我们不能在不丢失记录的情况下真正降级，而且我真的没有在任何地方看到修复，或者我可能只是忽略了一些愚蠢的东西。
编辑：从 spring-cloud-starter-consul-discovery 中排除 spring-cloud-starter-netflix-ribbon 为我们解决了这个问题！
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-consul-discovery</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
</exclusion>
</exclusions>
</dependency>
你可以尝试排除功能区依赖性，如下所示
implementation('org.springframework.cloud:spring-cloud-starter-consul-discovery') {
exclude group: 'org.springframework.cloud', module: 'spring-cloud-starter-netflix-ribbon'
}