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springboot-dubbo cannot be cast to問題及解決

 更新時間：2023年04月27日 16:54:22   作者：勤奮的蝸牛t  
這篇文章主要介紹了springboot-dubbo cannot be cast to問題及解決方案，具有很好的參考價值，希望對大家有所幫助。如有錯誤或未考慮完全的地方，望不吝賜教

springboot-dubbo cannot be cast to

使用spring boot 集成dubbo的時候遇到問題：

2018-05-22 14:41:35.108 ERROR 2224 --- [:20880-thread-2] c.a.dubbo.rpc.filter.ExceptionFilter     :  [DUBBO] Got unchecked and undeclared exception which called by 10.0.75.1. service: com.neo.facade.UseServiceFacade, method: getAll, exception: com.alibaba.dubbo.rpc.RpcException: Failed to invoke remote proxy method getAll to registry://127.0.0.1:2181/com.alibaba.dubbo.registry.RegistryService?application=provider&dubbo=2.5.3&export=dubbo%3A%2F%2F10.0.75.1%3A20880%2Fcom.neo.facade.UseServiceFacade%3Fanyhost%3Dtrue%26application%3Dprovider%26dubbo%3D2.5.3%26interface%3Dcom.neo.facade.UseServiceFacade%26methods%3DgetAll%2CgetOne%2Cupdate%2Cinsert%2Cdelete%26pid%3D2224%26revision%3D1.0.0%26side%3Dprovider%26timestamp%3D1526971274301%26version%3D1.0.0&pid=2224&registry=zookeeper×tamp=1526971274290, cause: java.lang.ClassCastException: com.neo.service.UserService cannot be cast to com.neo.service.UserService, dubbo version: 2.5.3, current host: 127.0.0.1
 
com.alibaba.dubbo.rpc.RpcException: Failed to invoke remote proxy method getAll to registry://127.0.0.1:2181/com.alibaba.dubbo.registry.RegistryService?application=provider&dubbo=2.5.3&export=dubbo%3A%2F%2F10.0.75.1%3A20880%2Fcom.neo.facade.UseServiceFacade%3Fanyhost%3Dtrue%26application%3Dprovider%26dubbo%3D2.5.3%26interface%3Dcom.neo.facade.UseServiceFacade%26methods%3DgetAll%2CgetOne%2Cupdate%2Cinsert%2Cdelete%26pid%3D2224%26revision%3D1.0.0%26side%3Dprovider%26timestamp%3D1526971274301%26version%3D1.0.0&pid=2224&registry=zookeeper×tamp=1526971274290, cause: java.lang.ClassCastException: com.neo.service.UserService cannot be cast to com.neo.service.UserService
    at com.alibaba.dubbo.rpc.proxy.AbstractProxyInvoker.invoke(AbstractProxyInvoker.java:76) ~[dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.InvokerWrapper.invoke(InvokerWrapper.java:53) ~[dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.filter.ExceptionFilter.invoke(ExceptionFilter.java:64) ~[dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.monitor.support.MonitorFilter.invoke(MonitorFilter.java:75) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.filter.TimeoutFilter.invoke(TimeoutFilter.java:42) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.dubbo.filter.TraceFilter.invoke(TraceFilter.java:78) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.filter.ContextFilter.invoke(ContextFilter.java:60) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.filter.GenericFilter.invoke(GenericFilter.java:112) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.filter.ClassLoaderFilter.invoke(ClassLoaderFilter.java:38) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.filter.EchoFilter.invoke(EchoFilter.java:38) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol$1.reply(DubboProtocol.java:108) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.handleRequest(HeaderExchangeHandler.java:84) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.received(HeaderExchangeHandler.java:170) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:52) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.remoting.transport.dispatcher.ChannelEventRunnable.run(ChannelEventRunnable.java:82) [dubbo-2.5.3.jar:2.5.3]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_131]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_131]
    at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131]
Caused by: java.lang.IllegalArgumentException: java.lang.ClassCastException: com.neo.service.UserService cannot be cast to com.neo.service.UserService
    at com.alibaba.dubbo.common.bytecode.Wrapper1.invokeMethod(Wrapper1.java) ~[na:2.5.3]
    at com.alibaba.dubbo.rpc.proxy.javassist.JavassistProxyFactory$1.doInvoke(JavassistProxyFactory.java:46) ~[dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.proxy.AbstractProxyInvoker.invoke(AbstractProxyInvoker.java:72) ~[dubbo-2.5.3.jar:2.5.3]
    ... 25 common frames omitted
Caused by: java.lang.ClassCastException: com.neo.service.UserService cannot be cast to com.neo.service.UserService
    ... 28 common frames omitted
 
2018-05-22 14:41:35.126 ERROR 2224 --- [:20880-thread-3] c.a.dubbo.rpc.filter.ExceptionFilter     :  [DUBBO] Got unchecked and undeclared exception which called by 10.0.75.1. service: com.neo.facade.UseServiceFacade, method: getAll, exception: com.alibaba.dubbo.rpc.RpcException: Failed to invoke remote proxy method getAll to registry://127.0.0.1:2181/com.alibaba.dubbo.registry.RegistryService?application=provider&dubbo=2.5.3&export=dubbo%3A%2F%2F10.0.75.1%3A20880%2Fcom.neo.facade.UseServiceFacade%3Fanyhost%3Dtrue%26application%3Dprovider%26dubbo%3D2.5.3%26interface%3Dcom.neo.facade.UseServiceFacade%26methods%3DgetAll%2CgetOne%2Cupdate%2Cinsert%2Cdelete%26pid%3D2224%26revision%3D1.0.0%26side%3Dprovider%26timestamp%3D1526971274301%26version%3D1.0.0&pid=2224&registry=zookeeper×tamp=1526971274290, cause: java.lang.ClassCastException: com.neo.service.UserService cannot be cast to com.neo.service.UserService, dubbo version: 2.5.3, current host: 127.0.0.1
 
com.alibaba.dubbo.rpc.RpcException: Failed to invoke remote proxy method getAll to registry://127.0.0.1:2181/com.alibaba.dubbo.registry.RegistryService?application=provider&dubbo=2.5.3&export=dubbo%3A%2F%2F10.0.75.1%3A20880%2Fcom.neo.facade.UseServiceFacade%3Fanyhost%3Dtrue%26application%3Dprovider%26dubbo%3D2.5.3%26interface%3Dcom.neo.facade.UseServiceFacade%26methods%3DgetAll%2CgetOne%2Cupdate%2Cinsert%2Cdelete%26pid%3D2224%26revision%3D1.0.0%26side%3Dprovider%26timestamp%3D1526971274301%26version%3D1.0.0&pid=2224&registry=zookeeper×tamp=1526971274290, cause: java.lang.ClassCastException: com.neo.service.UserService cannot be cast to com.neo.service.UserService
    at com.alibaba.dubbo.rpc.proxy.AbstractProxyInvoker.invoke(AbstractProxyInvoker.java:76) ~[dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.InvokerWrapper.invoke(InvokerWrapper.java:53) ~[dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.filter.ExceptionFilter.invoke(ExceptionFilter.java:64) ~[dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.monitor.support.MonitorFilter.invoke(MonitorFilter.java:75) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.filter.TimeoutFilter.invoke(TimeoutFilter.java:42) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.dubbo.filter.TraceFilter.invoke(TraceFilter.java:78) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.filter.ContextFilter.invoke(ContextFilter.java:60) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.filter.GenericFilter.invoke(GenericFilter.java:112) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.filter.ClassLoaderFilter.invoke(ClassLoaderFilter.java:38) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.filter.EchoFilter.invoke(EchoFilter.java:38) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol$1.reply(DubboProtocol.java:108) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.handleRequest(HeaderExchangeHandler.java:84) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.received(HeaderExchangeHandler.java:170) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:52) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.remoting.transport.dispatcher.ChannelEventRunnable.run(ChannelEventRunnable.java:82) [dubbo-2.5.3.jar:2.5.3]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_131]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_131]
    at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131]
Caused by: java.lang.IllegalArgumentException: java.lang.ClassCastException: com.neo.service.UserService cannot be cast to com.neo.service.UserService
    at com.alibaba.dubbo.common.bytecode.Wrapper1.invokeMethod(Wrapper1.java) ~[na:2.5.3]
    at com.alibaba.dubbo.rpc.proxy.javassist.JavassistProxyFactory$1.doInvoke(JavassistProxyFactory.java:46) ~[dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.proxy.AbstractProxyInvoker.invoke(AbstractProxyInvoker.java:72) ~[dubbo-2.5.3.jar:2.5.3]
    ... 25 common frames omitted
Caused by: java.lang.ClassCastException: com.neo.service.UserService cannot be cast to com.neo.service.UserService
    ... 28 common frames omitted
 
2018-05-22 14:41:35.133 ERROR 2224 --- [:20880-thread-4] c.a.dubbo.rpc.filter.ExceptionFilter     :  [DUBBO] Got unchecked and undeclared exception which called by 10.0.75.1. service: com.neo.facade.UseServiceFacade, method: getAll, exception: com.alibaba.dubbo.rpc.RpcException: Failed to invoke remote proxy method getAll to registry://127.0.0.1:2181/com.alibaba.dubbo.registry.RegistryService?application=provider&dubbo=2.5.3&export=dubbo%3A%2F%2F10.0.75.1%3A20880%2Fcom.neo.facade.UseServiceFacade%3Fanyhost%3Dtrue%26application%3Dprovider%26dubbo%3D2.5.3%26interface%3Dcom.neo.facade.UseServiceFacade%26methods%3DgetAll%2CgetOne%2Cupdate%2Cinsert%2Cdelete%26pid%3D2224%26revision%3D1.0.0%26side%3Dprovider%26timestamp%3D1526971274301%26version%3D1.0.0&pid=2224&registry=zookeeper×tamp=1526971274290, cause: java.lang.ClassCastException: com.neo.service.UserService cannot be cast to com.neo.service.UserService, dubbo version: 2.5.3, current host: 127.0.0.1
 
com.alibaba.dubbo.rpc.RpcException: Failed to invoke remote proxy method getAll to registry://127.0.0.1:2181/com.alibaba.dubbo.registry.RegistryService?application=provider&dubbo=2.5.3&export=dubbo%3A%2F%2F10.0.75.1%3A20880%2Fcom.neo.facade.UseServiceFacade%3Fanyhost%3Dtrue%26application%3Dprovider%26dubbo%3D2.5.3%26interface%3Dcom.neo.facade.UseServiceFacade%26methods%3DgetAll%2CgetOne%2Cupdate%2Cinsert%2Cdelete%26pid%3D2224%26revision%3D1.0.0%26side%3Dprovider%26timestamp%3D1526971274301%26version%3D1.0.0&pid=2224&registry=zookeeper×tamp=1526971274290, cause: java.lang.ClassCastException: com.neo.service.UserService cannot be cast to com.neo.service.UserService
    at com.alibaba.dubbo.rpc.proxy.AbstractProxyInvoker.invoke(AbstractProxyInvoker.java:76) ~[dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.InvokerWrapper.invoke(InvokerWrapper.java:53) ~[dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.filter.ExceptionFilter.invoke(ExceptionFilter.java:64) ~[dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.monitor.support.MonitorFilter.invoke(MonitorFilter.java:75) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.filter.TimeoutFilter.invoke(TimeoutFilter.java:42) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.dubbo.filter.TraceFilter.invoke(TraceFilter.java:78) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.filter.ContextFilter.invoke(ContextFilter.java:60) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.filter.GenericFilter.invoke(GenericFilter.java:112) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.filter.ClassLoaderFilter.invoke(ClassLoaderFilter.java:38) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.filter.EchoFilter.invoke(EchoFilter.java:38) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol$1.reply(DubboProtocol.java:108) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.handleRequest(HeaderExchangeHandler.java:84) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.received(HeaderExchangeHandler.java:170) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:52) [dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.remoting.transport.dispatcher.ChannelEventRunnable.run(ChannelEventRunnable.java:82) [dubbo-2.5.3.jar:2.5.3]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_131]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_131]
    at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131]
Caused by: java.lang.IllegalArgumentException: java.lang.ClassCastException: com.neo.service.UserService cannot be cast to com.neo.service.UserService
    at com.alibaba.dubbo.common.bytecode.Wrapper1.invokeMethod(Wrapper1.java) ~[na:2.5.3]
    at com.alibaba.dubbo.rpc.proxy.javassist.JavassistProxyFactory$1.doInvoke(JavassistProxyFactory.java:46) ~[dubbo-2.5.3.jar:2.5.3]
    at com.alibaba.dubbo.rpc.proxy.AbstractProxyInvoker.invoke(AbstractProxyInvoker.java:72) ~[dubbo-2.5.3.jar:2.5.3]
    ... 25 common frames omitted
Caused by: java.lang.ClassCastException: com.neo.service.UserService cannot be cast to com.neo.service.UserService
    ... 28 common frames omitted

是由spring-boot-devtools引起的

?<dependency>
? ? ? ? ? ? <groupId>org.springframework.boot</groupId>
? ? ? ? ? ? <artifactId>spring-boot-devtools</artifactId>
? ? ? ? ? ? <optional>true</optional>
? ? ? ? </dependency>

估計是和dubbo有點(diǎn)沖突

dubbo報錯總結(jié)

作為一個dubbo使用新手，有必要總結(jié)一些常見的dubbo問題，提升解決問題的套路。

1.dubbo consumer 調(diào)用provider報錯（1）- No provider available

問題：

No provider available from registry xxx from service xxx on consumer xxx may be providers disabled or not registrered。

如下圖所示：

dubbo報錯

原因：  

根據(jù)源碼的截圖所示（下圖），就兩個原因： 

1）No service provider  

2）Service providers are disabled

源碼分析

解決辦法：  

1).provider部署分支不正確，部署正確的分支。  

2).consumer部署分支的zookeeper地址不正確。

2.dubbo consumer調(diào)用provider報錯（2）

問題：

com.alibaba.dubbo.rpc.RpcException: Rpc cluster invoker for interface xxx on consumer 10.2.4.63 use dubbo version 2.6.0.2 is now destroyed! Can not invoke any more.

問題截圖

原因：

源碼分析

調(diào)用鏈路：invoke()–>checkWhetherDestroyed()

consumer端調(diào)用的時候，發(fā)現(xiàn)出現(xiàn)實例已經(jīng)destory，就拋出此異常

懷疑是由于內(nèi)存不足，dubbo進(jìn)程觸發(fā)了spring的destroy()方法，同時就執(zhí)行到了AbstractClusterInvoker.destroy()，但是此時進(jìn)程并沒有掛掉，所以就出現(xiàn)了可以調(diào)用，但是調(diào)用失敗的情況。

解決方法：  

1）查看provider服務(wù)器是否內(nèi)存不夠，kill掉不相干的進(jìn)程。  

2）重啟provider服務(wù)。

3.dubbo consumer 調(diào)用provider報錯（3）- NoSuchMethodException

問題：

Caused by: com.alibaba.dubbo.common.bytecode.NoSuchMethodException: Not found method “getSocialResourceByRegionId” in class com.missfresh.product.center.service.impl.SocialResourceServiceImpl.

問題截圖

原因：  

dubbo服務(wù)部署的分支里沒有相關(guān)接口的實現(xiàn)。

解決方法：  

部署對應(yīng)的分支?；蛘呤侵苯硬渴餸aster。

4.dubbo consumer 調(diào)用provider報錯（4）- Thread pool is EXHAUSTED!

問題：

com.alibaba.dubbo.rpc.RpcException: Failed to invoke the method queryProductSalsPromotionTagList in the service com.missfresh.product.center.service.IProductCategorysService. Tried 1 times of the providers

問題截圖

原因：

原因分析

如上圖所示，provider服務(wù)支持的最大線程數(shù)為300。

解決方法：  

檢查程序中并發(fā)采用的線程池初始化值，是否合理。最大線程個數(shù)不能大于300.

總結(jié)

以上為個人經(jīng)驗，希望能給大家一個參考，也希望大家多多支持腳本之家。

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