问题描述
使用Feign调用微服务接口报错，如下：
java.lang.RuntimeException: com.netflix.client.ClientException: Load balancer does not have available server for client: app1 ???at org.springframework.cloud.netflix.feign.ribbon.LoadBalancerFeignClient.execute(LoadBalancerFeignClient.java:71) ???at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:97) ???at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:76) ???at feign.hystrix.HystrixInvocationHandler$1.run(HystrixInvocationHandler.java:108) ???at com.netflix.hystrix.HystrixCommand$2.call(HystrixCommand.java:302) ???at com.netflix.hystrix.HystrixCommand$2.call(HystrixCommand.java:298) ???at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:46) ???at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:35) ???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.unsafeSubscribe(Observable.java:10211) ???at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:51) ???at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:35) ???at rx.Observable.unsafeSubscribe(Observable.java:10211) ???at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:41) ???at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:30) ???at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48) ???at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30) ???at rx.Observable.unsafeSubscribe(Observable.java:10211) ???at rx.internal.operators.OperatorSubscribeOn$1.call(OperatorSubscribeOn.java:94) ???at com.netflix.hystrix.strategy.concurrency.HystrixContexSchedulerAction$1.call(HystrixContexSchedulerAction.java:56) ???at com.netflix.hystrix.strategy.concurrency.HystrixContexSchedulerAction$1.call(HystrixContexSchedulerAction.java:47) ???at org.springframework.security.concurrent.DelegatingSecurityContextCallable.call(DelegatingSecurityContextCallable.java:86) ???at com.netflix.hystrix.strategy.concurrency.HystrixContexSchedulerAction.call(HystrixContexSchedulerAction.java:69) ???at rx.internal.schedulers.ScheduledAction.run(ScheduledAction.java:55) ???at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ???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: com.netflix.client.ClientException: Load balancer does not have available server for client: app1 ???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:10211) ???at rx.internal.operators.OnSubscribeConcatMap.call(OnSubscribeConcatMap.java:94) ???at rx.internal.operators.OnSubscribeConcatMap.call(OnSubscribeConcatMap.java:42) ???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:10307) ???at rx.Observable.subscribe(Observable.java:10274) ???at rx.observables.BlockingObservable.blockForSingle(BlockingObservable.java:445) ???at rx.observables.BlockingObservable.single(BlockingObservable.java:342) ???at com.netflix.client.AbstractLoadBalancerAwareClient.executeWithLoadBalancer(AbstractLoadBalancerAwareClient.java:117) ???at org.springframework.cloud.netflix.feign.ribbon.LoadBalancerFeignClient.execute(LoadBalancerFeignClient.java:63) ???... 33 common frames omitted问题解决
原因可能有两个：
- 1.没有引入Eureka依赖
- 2.@AuthorizedFeignClient注解中name写错，比如这次我按照教程以为name写app1就好，其实不然……
1.引入依赖
???????<dependency> ???????????<groupId>org.springframework.cloud</groupId> ???????????<artifactId>spring-cloud-starter-eureka</artifactId> ???????</dependency>2.将name修改正确的被调用服务的spring.application.name名称
Feign报错Caused by: com.netflix.client.ClientException: Load balancer does not have available server for client
原文地址：https://www.cnblogs.com/hellxz/p/8920378.html