com.alibaba.dubbo.remoting.TimeoutException异常的解决方法

本文分享了解决在商品分类和规格使用Redis缓存时遇到的超时错误经验,通过调整SpringDataRedis存储时间及Dubbo远程调用超时设置,成功避免了页面请求超时。

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今天写商品分类和规格使用redis进行缓存的时候碰到一个头疼的BUG,早上刚开机的时候运行没有任何问题,电脑运行的东西多了之后,突然就给我报了个bug,头疼了一下午,后来找到个大牛解决了,原来是调用SpringDataRedis对数据进行存储到redis的时间过长,结果页面请求的超时时间过了,报了这个BUG ....

 

 解决方法:在@Service注解这里设置timeout

@Service(timeout = 5000),我的电脑设置为5000就好了,这个时间设置,看个人电脑配置吧。不够就多写点。
(ps:最后吐槽一句:CPU以U结尾的笔记本是真的垃圾,这辈子不会再买低压笔记本了。。。)
12月 11, 2018 8:37:08 下午 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet [springmvc] in context with path [] threw exception [Request processing failed; nested exception is com.alibaba.dubbo.rpc.RpcException: Failed to invoke the method findByParentId in the service com.pinyougou.sellergoods.service.ItemCatService. Tried 3 times of the providers [192.168.32.1:20881] (1/1) from the registry 192.168.25.128:2181 on the consumer 192.168.32.1 using the dubbo version 2.8.4. Last error is: Invoke remote method timeout. method: findByParentId, provider: dubbo://192.168.32.1:20881/com.pinyougou.sellergoods.service.ItemCatService?anyhost=true&application=pinyougou-manager-web&check=false&dubbo=2.8.4&generic=false&interface=com.pinyougou.sellergoods.service.ItemCatService&methods=add,findByParentId,findOne,update,findPage,delete,findAll&pid=23056&revision=0.0.3-SNAPSHOT&side=consumer&timestamp=1544531824798, cause: Waiting server-side response timeout by scan timer. start time: 2018-12-11 20:37:07.649, end time: 2018-12-11 20:37:08.651, client elapsed: 2 ms, server elapsed: 1000 ms, timeout: 1000 ms, request: Request [id=2, version=2.0.0, twoway=true, event=false, broken=false, data=RpcInvocation [methodName=findByParentId, parameterTypes=[class java.lang.Long], arguments=[0], attachments={path=com.pinyougou.sellergoods.service.ItemCatService, interface=com.pinyougou.sellergoods.service.ItemCatService, version=0.0.0}]], channel: /192.168.32.1:49225 -> /192.168.32.1:20881] with root cause
com.alibaba.dubbo.remoting.TimeoutException: Waiting server-side response timeout by scan timer. start time: 2018-12-11 20:37:07.649, end time: 2018-12-11 20:37:08.651, client elapsed: 2 ms, server elapsed: 1000 ms, timeout: 1000 ms, request: Request [id=2, version=2.0.0, twoway=true, event=false, broken=false, data=RpcInvocation [methodName=findByParentId, parameterTypes=[class java.lang.Long], arguments=[0], attachments={path=com.pinyougou.sellergoods.service.ItemCatService, interface=com.pinyougou.sellergoods.service.ItemCatService, version=0.0.0}]], channel: /192.168.32.1:49225 -> /192.168.32.1:20881
	at com.alibaba.dubbo.remoting.exchange.support.DefaultFuture.returnFromResponse(DefaultFuture.java:188)
	at com.alibaba.dubbo.remoting.exchange.support.DefaultFuture.get(DefaultFuture.java:110)
	at com.alibaba.dubbo.remoting.exchange.support.DefaultFuture.get(DefaultFuture.java:84)
	at com.alibaba.dubbo.rpc.protocol.dubbo.DubboInvoker.doInvoke(DubboInvoker.java:96)
	at com.alibaba.dubbo.rpc.protocol.AbstractInvoker.invoke(AbstractInvoker.java:144)
	at com.alibaba.dubbo.rpc.listener.ListenerInvokerWrapper.invoke(ListenerInvokerWrapper.java:74)
	at com.alibaba.dubbo.monitor.support.MonitorFilter.invoke(MonitorFilter.java:75)
	at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91)
	at com.alibaba.dubbo.rpc.protocol.dubbo.filter.FutureFilter.invoke(FutureFilter.java:53)
	at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91)
	at com.alibaba.dubbo.rpc.filter.ConsumerContextFilter.invoke(ConsumerContextFilter.java:48)
	at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91)
	at com.alibaba.dubbo.rpc.protocol.InvokerWrapper.invoke(InvokerWrapper.java:53)
	at com.alibaba.dubbo.rpc.cluster.support.FailoverClusterInvoker.doInvoke(FailoverClusterInvoker.java:77)
	at com.alibaba.dubbo.rpc.cluster.support.AbstractClusterInvoker.invoke(AbstractClusterInvoker.java:227)
	at com.alibaba.dubbo.rpc.cluster.support.wrapper.MockClusterInvoker.invoke(MockClusterInvoker.java:72)
	at com.alibaba.dubbo.rpc.proxy.InvokerInvocationHandler.invoke(InvokerInvocationHandler.java:52)
	at com.alibaba.dubbo.common.bytecode.proxy5.findByParentId(proxy5.java)
	at com.pinyougou.manager.controller.ItemCatController.findByParentId(ItemCatController.java:116)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:564)
	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:222)
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:814)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:737)
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:969)
	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:860)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:845)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:317)
	at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127)
	at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
	at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:115)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
	at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
	at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:112)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
	at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:169)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
	at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
	at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:206)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
	at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:121)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
	at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:66)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
	at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
	at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:106)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
	at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:214)
	at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:177)
	at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
	at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:121)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
	at java.base/java.lang.Thread.run(Thread.java:844)

 

<think>好的,我现在需要帮助用户解决com.alibaba.cloud.dubbo中的循环依赖问题。首先,我要理清楚用户的问题背景。用户提到了循环依赖,可能是在使用Spring Cloud Alibaba Dubbo时遇到的。根据用户提供的引用内容,他们可能是在配置依赖时出现了问题,比如版本不匹配或者依赖冲突。 首先,我应该回顾用户提供的引用内容。引用[1]和[2]指出需要正确指定版本号,尤其是与Spring Cloud Alibaba版本一致。引用[3]和[4]提到可能依赖坐标错误或者需要手动添加正确的依赖项。特别是引用[4]中的例子,用户尝试添加了多个Dubbo相关的依赖,包括不同组的包,比如org.apache.dubbocom.alibaba.cloud。这可能导致了版本冲突或者重复依赖,从而引发循环依赖问题。 接下来,我需要分析循环依赖的常见原因。在Spring中,循环依赖通常发生在两个或多个Bean相互依赖的情况下,比如A依赖B,B又依赖A。但在Dubbo和Nacos的整合中,可能涉及到服务注册、发现以及配置管理的Bean之间的相互引用。例如,Dubbo的服务导出和Nacos的配置加载可能在初始化顺序上有冲突,导致循环依赖。 根据引用中的信息,可能的解决方案包括: 1. **版本对齐**:确保所有相关依赖的版本一致,特别是Spring Cloud AlibabaDubbo和Nacos的版本。用户之前可能使用了错误的版本,导致兼容性问题。比如,用户引用[2]中使用了2.2.5.RELEASE,而引用[4]中用了Dubbo 2.7.3,需要确认这些版本是否兼容。 2. **依赖管理**:检查pom.xml中的依赖,避免重复引入不同来源的相同库。比如,用户同时引用了com.alibaba.cloud的spring-cloud-starter-dubbo和org.apache.dubbo的starter,这可能导致冲突。应该统一使用一个依赖源,并排除不需要的传递依赖。 3. **配置调整**:在application.properties或yml中正确配置Dubbo和Nacos的参数,比如注册中心地址、元数据设置,减少不必要的自动配置冲突。 4. **使用@Lazy注解**:在Bean注入时添加@Lazy,延迟依赖的初始化,打破循环链。 5. **检查组件兼容性**:确认Spring Boot、Spring Cloud、Spring Cloud AlibabaDubbo的版本对应关系是否正确。例如,Spring Cloud Alibaba 2022.0.0.0需要对应特定的Spring Cloud版本,而Dubbo的版本也需要与之匹配。 此外,用户可能没有正确配置Dubbo的注册中心,或者服务暴露/订阅的顺序有问题,导致服务元数据在初始化时相互依赖。例如,DubboMetadataService相关的Bean可能在Nacos配置加载之前就需要初始化,从而形成循环。 需要建议用户核对官方文档中的版本兼容性表格,确认各组件版本是否匹配。例如,Spring Cloud Alibaba 2022.0.0.0对应Spring Cloud 2022.0.0,而Dubbo可能推荐使用某个特定版本。同时,检查依赖树,排除冲突的依赖,使用Maven的dependency:tree命令分析是否存在多个版本的同一库。 最后,建议用户分步排查:首先统一版本,清理并重新构建项目;如果问题依旧,检查配置文件和Bean的初始化顺序,使用@Lazy或调整配置参数;若仍无法解决,可能需要简化代码,逐步添加依赖以定位问题源。</think>为解决`com.alibaba.cloud.dubbo`的循环依赖问题,需从依赖管理、配置优化、版本对齐三方面入手。以下是具体步骤: --- ### **1. 依赖版本对齐** 循环依赖常因组件版本冲突导致。需确保以下依赖版本兼容: - **Spring Cloud Alibaba** 与 **Spring Boot**、**Spring Cloud** 版本严格对应 - **Dubbo** 与 **Nacos** 版本需适配 参考版本组合示例: ```xml <!-- Spring Boot --> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.7.12</version> </parent> <!-- Spring Cloud --> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>2021.0.5</version> <type>pom</type> <scope>import</scope> </dependency> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-alibaba-dependencies</artifactId> <version>2021.0.5.0</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <!-- Dubbo 依赖(统一使用Spring Cloud Alibaba管理的版本) --> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-dubbo</artifactId> </dependency> ``` --- ### **2. 排除冲突依赖** 检查项目中是否重复引入不同来源的Dubbo依赖(如同时使用`com.alibaba.cloud`和`org.apache.dubbo`)。**保留一个来源即可**: ```xml <!-- 错误示例:混用两种来源 --> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-dubbo</artifactId> </dependency> <!-- 以下依赖需移除 --> <dependency> <groupId>org.apache.dubbo</groupId> <artifactId>dubbo-spring-boot-starter</artifactId> <version>2.7.3</version> </dependency> ``` --- ### **3. 配置优化** 在`application.yml`中明确配置Dubbo与Nacos的元数据管理,减少自动装配冲突: ```yaml dubbo: registry: address: nacos://${nacos.server-addr} # 明确注册中心地址 metadata-report: address: nacos://${nacos.server-addr} # 元数据存储地址 scan: base-packages: com.example.service # 指定Dubbo服务扫描路径 spring: cloud: nacos: discovery: server-addr: ${nacos.server-addr} config: server-addr: ${nacos.server-addr} ``` --- ### **4. 使用@Lazy注解** 在Bean注入时添加`@Lazy`延迟初始化,打破循环依赖链: ```java @Service public class ServiceA { private final ServiceB serviceB; @Autowired public ServiceA(@Lazy ServiceB serviceB) { this.serviceB = serviceB; } } ``` --- ### **5. 验证依赖树** 通过Maven命令检查依赖冲突: ```bash mvn dependency:tree -Dincludes=com.alibaba.cloud,org.apache.dubbo ``` 若发现重复依赖,使用`<exclusion>`排除: ```xml <dependency> <groupId>com.example</groupId> <artifactId>problematic-module</artifactId> <exclusions> <exclusion> <groupId>org.apache.dubbo</groupId> <artifactId>dubbo</artifactId> </exclusion> </exclusions> </dependency> ``` --- ### **典型错误场景** 若出现`No such extension com.alibaba.cloud.dubbo.service.DubboMetadataService`,需检查: 1. 是否遗漏`spring-cloud-starter-dubbo`依赖[^4] 2. 是否错误引入旧版Dubbo依赖(如`dubbo-spring-boot-starter`) ---
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