关于Failed to check the status of the service com.xxx.service.ItemService. No provider available.....

项目中用dubbo发生：

　　　　Failed to check the status of the service com.test.service.ItemService. No provider available for the service.....

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'itemCatService': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalStateException: Failed to check the status of the service com.test.service.ItemCatService. No provider available for the service com.test.service.ItemCatService from the url zookeeper://192.168.234.129:2181/com.alibaba.dubbo.registry.RegistryService?application=test-manager-web&dubbo=2.5.3&interface=com.test.service.ItemCatService&methods=getItemCatList&pid=12352&revision=0.0.1-SNAPSHOT&side=consumer&timestamp=1537291162995 to the consumer 192.168.234.1 use dubbo version 2.5.3org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:175)org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:103)org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1585)org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:254)org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1192)org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1116)org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014)org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545)org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214)org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772)org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839)org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538)org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:668)org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:634)org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:682)org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:553)org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:494)org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)javax.servlet.GenericServlet.init(GenericServlet.java:160)org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603)org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)java.lang.Thread.run(Thread.java:745)

解决方案：

在消费方引用dubbo服务上加上check="false"。

<!-- 引用dubbo服务 -->
<dubbo:application name="test-manager-web"/>
<dubbo:registry protocol="zookeeper" address="192.168.234.129:2181"/>
<dubbo:reference interface="com.test.service.ItemService" id="itemService" check="false"/> <!-- 商品分页展示服务 -->
<dubbo:reference interface="com.test.service.ItemCatService" id="itemCatService"  check="false"/> <!-- 商品分类管理服务 -->
<dubbo:reference interface="com.test.content.service.ContentCategoryService" id="contentCategoryService" check="false" /> <!-- 内容管理服务（CMS） -->

原因：

Dubbo缺省会在启动时检查依赖的服务是否可用，不可用时会抛出异常，阻止Spring初始化完成，以便上线时，能及早发现问题，默认check=true。

如果你的Spring容器是懒加载的，或者通过API编程延迟引用服务，请关闭check，否则服务临时不可用时，会抛出异常，拿到null引用，如果check=false，总是会返回引用，当服务恢复时，能自动连上。

可以通过check="false"关闭检查，比如，测试时，有些服务不关心，或者出现了循环依赖，必须有一方先启动。

1、关闭某个服务的启动时检查：(没有提供者时报错)
<dubbo:reference interface="com.foo.BarService" check="false" />2、关闭所有服务的启动时检查：(没有提供者时报错)  写在定义服务消费者一方
<dubbo:consumer check="false" />3、关闭注册中心启动时检查：(注册订阅失败时报错)
<dubbo:registry check="false" />

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关于Failed to check the status of the service com.xxx.service.ItemService. No provider available.....

项目中用dubbo发生：

解决方案：

原因：

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