Feign报错Caused by: com.netflix.client.ClientException: Load balancer does not have available server

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本文针对Feign在调用过程中出现的负载均衡错误进行了详细分析，并提供了有效的解决方案。主要探讨了Eureka中心的检查方法及如何确保Application名称与模块名一致的问题。
问题描述：

Feign报错Caused by: com.netflix.client.ClientException: Load balancer does not have available server for client

解决方式

1、查看自己的Eureka中心，如下所示：
在这里插入图片描述
2、查看Application是否和自己的模块名相同，若不同，去配置中心修改即可

com.netflix.client.ClientException: Load balancer does not have available server for client: 的解决办法
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Zuul + Eureka 发送请求的时候报以下错误: 2021-03-17 16:10:12.543 INFO 21305 --- [nio-8811-exec-1] c.n.l.DynamicServerListLoadBalancer : DynamicServerListLoadBalancer for client spring-feign-eureka-client initialized: DynamicServerListLoadBalancer:{NFLoadBalancer:
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最近项目中进行微服务调用时，报链接超时，错误如下：
2025-06-08 11:47:15.380 [start-eval-executor-3] ERROR com.pccw.ihr.base.web.util.SpringAsyncMehodService - Error occurred while invoking exception handler method of async method: startPlan java.lang.reflect.InvocationTargetException: null at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.commons.lang3.reflect.MethodUtils.invokeMethod(MethodUtils.java:230) at org.apache.commons.lang3.reflect.MethodUtils.invokeMethod(MethodUtils.java:256) at org.apache.commons.lang3.reflect.MethodUtils.invokeMethod(MethodUtils.java:148) at com.pccw.ihr.base.web.util.SpringAsyncMehodService.doVoidAsync(SpringAsyncMehodService.java:52) at com.pccw.ihr.base.web.util.SpringAsyncMehodService$$FastClassBySpringCGLIB$$66b60535.invoke(<generated>) at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:749) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) at org.springframework.aop.interceptor.AsyncExecutionInterceptor.lambda$invoke$0(AsyncExecutionInterceptor.java:115) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.RuntimeException: com.netflix.client.ClientException: Load balancer does not have available server for client: pfmc-settings at org.springframework.cloud.openfeign.ribbon.LoadBalancerFeignClient.execute(LoadBalancerFeignClient.java:90) at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:108) at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:78) at feign.ReflectiveFeign$FeignInvocationHandler.invoke(ReflectiveFeign.java:103) at com.sun.proxy.$Proxy248.selectFormSetByFormId(Unknown Source) at com.pccw.ihr.pfmc.execution.web.service.PfmcStartPlanService.startPlan(PfmcStartPlanService.java:225) at com.pccw.ihr.pfmc.execution.web.service.PfmcStartPlanService$$FastClassBySpringCGLIB$$d6f2fb4c.invoke(<generated>) at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:749) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:295) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:688) at com.pccw.ihr.pfmc.execution.web.service.PfmcStartPlanService$$EnhancerBySpringCGLIB$$932c812b.startPlan(<generated>) ... 17 common frames omitted Caused by: com.netflix.client.ClientException: Load balancer does not have available server for client: pfmc-settings at com.netflix.loadbalancer.LoadBalancerContext.getServerFromLoadBalancer(LoadBalancerContext.java:483) at com.netflix.loadbalancer.reactive.LoadBalancerCommand$1.call(LoadBalancerCommand.java:184) at com.netflix.loadbalancer.reactive.LoadBalancerCommand$1.call(LoadBalancerCommand.java:180) at rx.Observable.unsafeSubscribe(Observable.java:10327) at rx.internal.operators.OnSubscribeConcatMap.call(OnSubscribeConcatMap.java:94) at rx.internal.operators.OnSubscribeConcatMap.call(OnSubscribeConcatMap.java:42) at rx.Observable.unsafeSubscribe(Observable.java:10327) at rx.internal.operators.OperatorRetryWithPredicate$SourceSubscriber$1.call(OperatorRetryWithPredicate.java:127) at rx.internal.schedulers.TrampolineScheduler$InnerCurrentThreadScheduler.enqueue(TrampolineScheduler.java:73) at rx.internal.schedulers.TrampolineScheduler$InnerCurrentThreadScheduler.schedule(TrampolineScheduler.java:52) at rx.internal.operators.OperatorRetryWithPredicate$SourceSubscriber.onNext(OperatorRetryWithPredicate.java:79) at rx.internal.operators.OperatorRetryWithPredicate$SourceSubscriber.onNext(OperatorRetryWithPredicate.java:45) at rx.internal.util.ScalarSynchronousObservable$WeakSingleProducer.request(ScalarSynchronousObservable.java:276) at rx.Subscriber.setProducer(Subscriber.java:209) at rx.internal.util.ScalarSynchronousObservable$JustOnSubscribe.call(ScalarSynchronousObservable.java:138) at rx.internal.util.ScalarSynchronousObservable$JustOnSubscribe.call(ScalarSynchronousObservable.java:129) at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48) at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30) at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48) at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30) at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48) at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30) at rx.Observable.subscribe(Observable.java:10423) at rx.Observable.subscribe(Observable.java:10390) at rx.observables.BlockingObservable.blockForSingle(BlockingObservable.java:443) at rx.observables.BlockingObservable.single(BlockingObservable.java:340) at com.netflix.client.AbstractLoadBalancerAwareClient.executeWithLoadBalancer(AbstractLoadBalancerAwareClient.java:112) at org.springframework.cloud.openfeign.ribbon.LoadBalancerFeignClient.execute(LoadBalancerFeignClient.java:83) ... 31 common frames omitted 2025-06-08 11:47:15.381 [start-eval-executor-3] ERROR c.p.i.b.w.aop.interceptor.IhrAsyncExceptionHandler - Unexpected exception occurred invoking async method: public void com.pccw.ihr.base.web.util.SpringAsyncMehodService.doVoidAsync(java.lang.Object,java.lang.String,java.lang.Object[]) 2025-06-08 11:47:15.381 [start-eval-executor-3] ERROR c.p.i.b.w.aop.interceptor.IhrAsyncExceptionHandler - Params: [com.pccw.ihr.pfmc.execution.web.service.PfmcStartPlanService@cc9ef8d, startPlan, [Ljava.lang.Object;@61d112bd] 2025-06-08 11:47:15.381 [start-eval-executor-3] ERROR c.p.i.b.w.aop.interceptor.IhrAsyncExceptionHandler - Error detail: com.pccw.ihr.base.provider.exception.BusinessException: 异步执行任务出错 at com.pccw.ihr.base.web.util.SpringAsyncMehodService.doVoidAsync(SpringAsyncMehodService.java:55) at com.pccw.ihr.base.web.util.SpringAsyncMehodService$$FastClassBySpringCGLIB$$66b60535.invoke(<generated>) at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:749) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) at org.springframework.aop.interceptor.AsyncExecutionInterceptor.lambda$invoke$0(AsyncExecutionInterceptor.java:115) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748)
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