本文目录

一、问题描述

二、问题原因

三、解决方案

一、问题描述

Spring Cloud项目，两个微服务之间调用报错超时，控制台抛出异常，截取部分报错：

feign.RetryableException: Read timed out executing POST http://back-control-engine/client/v1.0/robotClient/robotTest

Caused by: java.net.SocketTimeoutException: Read timed out

feign.RetryableException: Read timed out executing POST http://back-control-engine/client/v1.0/robotClient/robotTest
	at feign.FeignException.errorExecuting(FeignException.java:84)
	at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:113)
	at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:78)
	at feign.ReflectiveFeign$FeignInvocationHandler.invoke(ReflectiveFeign.java:103)
	at com.sun.proxy.$Proxy234.robotTest(Unknown Source)
	at com.uiotsoft.back.brain.platform.business.service.impl.RobotClientServiceImpl.robotTest(RobotClientServiceImpl.java:28)
	at com.uiotsoft.back.brain.platform.controller.api.RobotClientController.voiceChatClient(RobotClientController.java:33)
	at com.uiotsoft.back.brain.platform.controller.api.RobotClientController$$FastClassBySpringCGLIB$$61a13ae5.invoke(<generated>)
	at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:749)
	at com.uiotsoft.back.brain.platform.config.AopConfig.doAround(AopConfig.java:55)
	at sun.reflect.GeneratedMethodAccessor245.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:644)
	at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:633)
	at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:70)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1747)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.net.SocketTimeoutException: Read timed out
	at java.net.SocketInputStream.socketRead0(Native Method)
	at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
	at java.net.SocketInputStream.read(SocketInputStream.java:171)
	at java.net.SocketInputStream.read(SocketInputStream.java:141)
	at java.io.BufferedInputStream.fill(BufferedInputStream.java:246)
	at java.io.BufferedInputStream.read1(BufferedInputStream.java:286)
	at java.io.BufferedInputStream.read(BufferedInputStream.java:345)
	at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:735)
	at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480)
	at feign.Client$Default.convertResponse(Client.java:143)
	at feign.Client$Default.execute(Client.java:68)
	at org.springframework.cloud.openfeign.ribbon.RetryableFeignLoadBalancer$1.doWithRetry(RetryableFeignLoadBalancer.java:114)
	at org.springframework.cloud.openfeign.ribbon.RetryableFeignLoadBalancer$1.doWithRetry(RetryableFeignLoadBalancer.java:94)
	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.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)
	... 132 common frames omitted

二、问题原因

这是一个http请求报错超时，因为feign的调用分为两层：Ribbon的调用和Hystrix的调用，所以我们在配置文件中添加超时配置即可。高版本的Hystrix默认是关闭的，可以不设置。

三、解决方案

所以在 application.yml 配置文件中设置 ribbon 即可：

ribbon:
    # 请求处理的超时时间
    ReadTimeout: 60000
    # 请求连接的超时时间
    ConnectTimeout: 60000

或者 在 application.properties 配置文件中设置 ribbon

# 请求处理的超时时间
ribbon.ReadTimeout: 60000
# 请求连接的超时时间
ribbon.ConnectTimeout: 60000

完结！