门户网站特点,wordpress后台怎么登陆,传统企业如果建立网站,排名app一。 问题引入
升级springcloud的版本后 突然发现 以前正常的feign调用也报错了 升级后的各组件版本如下 spring cloud 2021.0.5 spring cloud alibaba 2021.0.5.0 spring boot 2.6.13
错误日志如下
feign.RetryableException: xxx-service executing GET http://xxx-servic…一。 问题引入
升级springcloud的版本后 突然发现 以前正常的feign调用也报错了 升级后的各组件版本如下 spring cloud 2021.0.5 spring cloud alibaba 2021.0.5.0 spring boot 2.6.13
错误日志如下
feign.RetryableException: xxx-service executing GET http://xxx-service/goods/teestcurrent1size10at feign.FeignException.errorExecuting(FeignException.java:268)at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:131)at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:91)at feign.ReflectiveFeign$FeignInvocationHandler.invoke(ReflectiveFeign.java:100)at org.springframework.cloud.openfeign.FeignCachingInvocationHandlerFactory$1.proceed(FeignCachingInvocationHandlerFactory.java:66)at org.springframework.cache.interceptor.CacheInterceptor.lambda$invoke$0(CacheInterceptor.java:54)at org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:351)at org.springframework.cache.interceptor.CacheInterceptor.invoke(CacheInterceptor.java:64)at org.springframework.cloud.openfeign.FeignCachingInvocationHandlerFactory.lambda$create$1(FeignCachingInvocationHandlerFactory.java:53)at jdk.proxy2/jdk.proxy2.$Proxy257.listGoodsLabel(Unknown Source)at com.style.goods.sdk.xxxSDK.lambda$listGoodsLabel$0(GoodsLabelSDK.java:31)at com.style.common.core.utils.sdk.SdkUtil.handle(SdkUtil.java:21)at com.style.goods.sdk.xxxSDK.test(GoodsLabelSDK.java:31)at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.base/java.lang.reflect.Method.invoke(Method.java:568)at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:725)at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149)at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140)at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84)at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115)at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105)at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104)at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98)at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$7(TestMethodTestDescriptor.java:214)at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:210)at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:135)at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:66)at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:151)at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35)at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54)at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107)at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88)at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54)at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67)at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52)at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114)at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86)at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86)at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:53)at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:71)at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38)at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11)at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35)at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:235)at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54)
Caused by: java.net.UnknownHostException: xxx-serviceat java.base/java.net.InetAddress$CachedAddresses.get(InetAddress.java:801)at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1533)at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1385)at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1306)at org.apache.http.impl.conn.SystemDefaultDnsResolver.resolve(SystemDefaultDnsResolver.java:45)at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:112)at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:376)at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393)at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236)at brave.httpclient.TracingMainExec.execute(TracingMainExec.java:65)at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186)at brave.httpclient.TracingProtocolExec.execute(TracingProtocolExec.java:66)at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108)at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56)at feign.httpclient.ApacheHttpClient.execute(ApacheHttpClient.java:83)at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:121)... 81 more二。问题分析
刚看到 Caused by: java.net.UnknownHostException: xxx-service 还以为网络问题居然一想 这是feign调用 然后开始逐步排查
检查调用的服务 是否在nacos上检查 调用者 与调用者是否在同一个 namespace上检查被调用的服务启动状况 检查完成 也没发现问题 问题的本质还是 服务间调用不同 然后开始从官网找下文档 文档的
官方文档的描述如下 https://docs.spring.io/spring-cloud-openfeign/docs/3.1.8/reference/html/#netflix-feign-starter
spring-cloud-starter-openfeign supports spring-cloud-starter-loadbalancer. However, as is an optional dependency, you need to make sure it been added to your project if you want to use it. openfeign 默认的负载均衡组件是ribbon 由于我们升级了springcloud版本 新版本的springcloud 移除了ribbon 所以为了openfeign 负载均衡生效 我们需要引入loadbalancer
三。问题解决
引入loadbalancer
dependencygroupIdorg.springframework.cloud/groupIdartifactIdspring-cloud-starter-loadbalancer/artifactId
/dependency四。 另外说明
feign调用失败的异常 还有其他的原因 如上只是一种可能 包括但不仅限于如下
被调用方未注册到nacos 或者注册nacos失败被调用方和调用方 不在同一个 namespace被调用方和调用方 不在同一个 nacos被调用方 应用未启动被调用方 调用失败报错feign client设置问题 name不对feign client设置问题 url 有误网络问题超时框架版本兼容问题等等
