Failed to check the status of the service com.zbcx.demo.service.UserService. No provider available

女爷i 2023-06-17 15:00 10阅读 0赞

## Failed to check the status of the service com.zbcx.demo.service.UserService. No provider available for the service com.zbcx.demo.service.UserService from the url zookeeper ##

初学dubbox遇到的第一个错误，启动消费方时报此异常

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userController' defined in file [F:\Eclipse_Projects\dubboxdemo-web\target\classes\com\zbcx\demo\web\UserController.class]: Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanInitializationException: Failed to init remote service reference at filed userService in class com.zbcx.demo.web.UserController; nested exception is java.lang.IllegalStateException: Failed to check the status of the service com.zbcx.demo.service.UserService. No provider available for the service com.zbcx.demo.service.UserService from the url zookeeper://192.168.25.129:2181/com.alibaba.dubbo.registry.RegistryService?application=dubboxdemo-web&dubbo=2.8.4&interface=com.zbcx.demo.service.UserService&methods=getName&pid=14112&side=consumer&timestamp=1575012122973 to the consumer 192.168.2.108 use dubbo version 2.8.4
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
    	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772)
    	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839)
    	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538)
    	at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:668)
    	at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:634)
    	at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:682)
    	at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:553)
    	at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:494)
    	at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
    	at javax.servlet.GenericServlet.init(GenericServlet.java:160)
    	at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1280)
    	at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1193)
    	at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1088)
    	at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5176)
    	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5460)
    	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
    	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
    	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    	at java.lang.Thread.run(Thread.java:748)
    Caused by: org.springframework.beans.factory.BeanInitializationException: Failed to init remote service reference at filed userService in class com.zbcx.demo.web.UserController; nested exception is java.lang.IllegalStateException: Failed to check the status of the service com.zbcx.demo.service.UserService. No provider available for the service com.zbcx.demo.service.UserService from the url zookeeper://192.168.25.129:2181/com.alibaba.dubbo.registry.RegistryService?application=dubboxdemo-web&dubbo=2.8.4&interface=com.zbcx.demo.service.UserService&methods=getName&pid=14112&side=consumer&timestamp=1575012122973 to the consumer 192.168.2.108 use dubbo version 2.8.4
    	at com.alibaba.dubbo.config.spring.AnnotationBean.postProcessBeforeInitialization(AnnotationBean.java:253)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:408)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1570)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545)
    	... 27 more
    Caused by: java.lang.IllegalStateException: Failed to check the status of the service com.zbcx.demo.service.UserService. No provider available for the service com.zbcx.demo.service.UserService from the url zookeeper://192.168.25.129:2181/com.alibaba.dubbo.registry.RegistryService?application=dubboxdemo-web&dubbo=2.8.4&interface=com.zbcx.demo.service.UserService&methods=getName&pid=14112&side=consumer&timestamp=1575012122973 to the consumer 192.168.2.108 use dubbo version 2.8.4
    	at com.alibaba.dubbo.config.ReferenceConfig.createProxy(ReferenceConfig.java:420)
    	at com.alibaba.dubbo.config.ReferenceConfig.init(ReferenceConfig.java:300)
    	at com.alibaba.dubbo.config.ReferenceConfig.get(ReferenceConfig.java:138)
    	at com.alibaba.dubbo.config.spring.AnnotationBean.refer(AnnotationBean.java:317)
    	at com.alibaba.dubbo.config.spring.AnnotationBean.postProcessBeforeInitialization(AnnotationBean.java:246)
    	... 30 more
    
    十一月 29, 2019 3:22:03 下午 org.apache.catalina.core.StandardContext loadOnStartup
    严重: Servlet  threw load() exception
    java.lang.IllegalStateException: Failed to check the status of the service com.zbcx.demo.service.UserService. No provider available for the service com.zbcx.demo.service.UserService from the url zookeeper://192.168.25.129:2181/com.alibaba.dubbo.registry.RegistryService?application=dubboxdemo-web&dubbo=2.8.4&interface=com.zbcx.demo.service.UserService&methods=getName&pid=14112&side=consumer&timestamp=1575012122973 to the consumer 192.168.2.108 use dubbo version 2.8.4
    	at com.alibaba.dubbo.config.ReferenceConfig.createProxy(ReferenceConfig.java:420)
    	at com.alibaba.dubbo.config.ReferenceConfig.init(ReferenceConfig.java:300)
    	at com.alibaba.dubbo.config.ReferenceConfig.get(ReferenceConfig.java:138)
    	at com.alibaba.dubbo.config.spring.AnnotationBean.refer(AnnotationBean.java:317)
    	at com.alibaba.dubbo.config.spring.AnnotationBean.postProcessBeforeInitialization(AnnotationBean.java:246)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:408)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1570)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
    	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772)
    	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839)
    	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538)
    	at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:668)
    	at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:634)
    	at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:682)
    	at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:553)
    	at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:494)
    	at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
    	at javax.servlet.GenericServlet.init(GenericServlet.java:160)
    	at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1280)
    	at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1193)
    	at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1088)
    	at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5176)
    	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5460)
    	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
    	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
    	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    	at java.lang.Thread.run(Thread.java:748)

此错误原因是编写服务方servcie时，写错了注解，应该使用dubbox提供的注解，不应该用spring的service注解

**import org.springframework.stereotype.Service;**
    
    import com.zbcx.demo.service.UserService;
    
    @Service
    public class UserServiceImpl implements UserService{ 
    	
    	public String getName() { 
    		// TODO Auto-generated method stub
    		return "zbcx";
    	}
    
    }

解决办法  
将service注解改为dubbo官方注解

**import com.alibaba.dubbo.config.annotation.Service;**
    import com.zbcx.demo.service.UserService;
    
    @Service
    public class UserServiceImpl implements UserService{ 
    	
    	public String getName() { 
    		// TODO Auto-generated method stub
    		return "zbcx";
    	}
    
    }