使用RestTemplate 请求某个服务 No servers available for service的问题解决方法

2024-12-12 10:34:01.492  WARN 1 --- [oundedElastic-4] o.s.c.l.core.RoundRobinLoadBalancer      : No servers available for service: XXXXXXXXXXXXX
java.lang.IllegalStateException: No instances available for 10.142.244.11
    at org.springframework.cloud.loadbalancer.blocking.client.BlockingLoadBalancerClient.execute(BlockingLoadBalancerClient.java:79)
    at org.springframework.cloud.client.loadbalancer.LoadBalancerInterceptor.intercept(LoadBalancerInterceptor.java:56)
    at org.springframework.http.client.InterceptingClientHttpRequest$InterceptingRequestExecution.execute(InterceptingClientHttpRequest.java:93)
    at com.enrising.ctsc.common.security.component.AiResourceServerAutoConfiguration.lambda$lbRestTemplate$0(AiResourceServerAutoConfiguration.java:51)
    at org.springframework.http.client.InterceptingClientHttpRequest$InterceptingRequestExecution.execute(InterceptingClientHttpRequest.java:93)
    at org.springframework.http.client.InterceptingClientHttpRequest.executeInternal(InterceptingClientHttpRequest.java:77)
    at org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:48)
    at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:66)
    at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:776)
    at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:711)
    at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:602)
    at com.enrising.ctsc.purchase.filesystem.util.DfsUtilsService.downloadForStream(DfsUtilsService.java:63)
    at com.enrising.ctsc.purchase.filesystem.util.DfsUtilsService.downloadForStream(DfsUtilsService.java:38)
    at com.enrising.ctsc.purchase.filesystem.service.impl.FilingServiceImpl.historyFileUploadTask(FilingServiceImpl.java:397)
    at com.enrising.ctsc.purchase.filesystem.service.impl.FilingServiceImpl$$FastClassBySpringCGLIB$$56694f8.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:688)
    at com.enrising.ctsc.purchase.filesystem.service.impl.FilingServiceImpl$$EnhancerBySpringCGLIB$$fccef0f.historyFileUploadTask(<generated>)
    at com.enrising.ctsc.purchase.filesystem.controller.FilingController.historyFileUploadTask(FilingController.java:78)
    at com.enrising.ctsc.purchase.filesystem.controller.FilingController$$FastClassBySpringCGLIB$$e3e5b0f6.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:779)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:750)
    at org.springframework.aop.aspectj.AspectJAfterThrowingAdvice.invoke(AspectJAfterThrowingAdvice.java:64)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:750)
    at org.springframework.aop.framework.adapter.AfterReturningAdviceInterceptor.invoke(AfterReturningAdviceInterceptor.java:57)

一：由于我在某个服务中调用一个服务，结果服务报错No servers available for service: + ip地址

因为我这个服务是个微服务，然后我直接注入使用的 restTemplate对象。导致最终调用时候是在自己应用里面找对应的ip服务。默认认为自己应用中微服务之间的调用。

修改后的代码为：直接新建一个new RestTemplate()解决问题。

之前：网上看得案例包括有自己微服务调用需要将你调用的ip地址修改为对应的服务的注册名称才能调用。