dubbo报错Caused by: java.lang.IllegalStateException: Failed to check the status of the service com.sea

在使用dubbo，写了个简单的SayHello进行测试，分别启动服务层工程和表现层工程的时候，出现以下报错信息：

Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'demoService': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalStateException: Failed to check the status of the service cn.feezu.carsearch.service.DemoService. No provider available for the service cn.feezu.carsearch.service.DemoService from the url zookeeper://127.0.0.1:2181/com.alibaba.dubbo.registry.RegistryService?application=consumer-of-helloworld-app&default.timeout=5000&dubbo=2.5.3&interface=cn.feezu.carsearch.service.DemoService&methods=sayHello&pid=8148&side=consumer&timestamp=1440572169099 to the consumer 10.10.8.101 use dubbo version 2.5.3  
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:151)  
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:103)  
    at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1514)  
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:252)  
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)  
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:973)  
    at Main.main(Main.java:15)  
Caused by: java.lang.IllegalStateException: Failed to check the status of the service cn.feezu.carsearch.service.DemoService. No provider available for the service cn.feezu.carsearch.service.DemoService from the url zookeeper://127.0.0.1:2181/com.alibaba.dubbo.registry.RegistryService?application=consumer-of-helloworld-app&default.timeout=5000&dubbo=2.5.3&interface=cn.feezu.carsearch.service.DemoService&methods=sayHello&pid=8148&side=consumer&timestamp=1440572169099 to the consumer 10.10.8.101 use dubbo version 2.5.3  
    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.ReferenceBean.getObject(ReferenceBean.java:65)  
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:144)  
    ... 6 more  

原因：是由于生产者和消费者的xml配置文件中的版本号不一致导致的，要么两个配置文件都有以下version信息，要么都不写，需要统一

<?xml version="1.0" encoding="UTF-8"?>

生产者的xml文件配置如下：

<?xml version="1.0" encoding="UTF-8"?>  
<beans xmlns="http://www.springframework.org/schema/beans"     
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"     
      xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"     
         xsi:schemaLocation="http://www.springframework.org/schema/beans 
         http://www.springframework.org/schema/beans/spring-beans.xsd 
         http://code.alibabatech.com/schema/dubbo 
         http://code.alibabatech.com/schema/dubbo/dubbo.xsd">  
         
         <dubbo:application name="demo-consumer"/>    
         <dubbo:registry address="zookeeper://192.168.56.121:2181" /> 
         
         <dubbo:reference id="helloT" interface="com.searchservice.test.service.HelloT" version="1.0"/> 
        
         <dubbo:reference id="errorAnalyDao" interface="com.searchservice.youmeng.dao.ErrorAnalyDao" version="1.0"/> 
          
         
</beans>  

消费者的xml文件配置如下：

<?xml version="1.0" encoding="UTF-8"?>  
<beans xmlns="http://www.springframework.org/schema/beans"        
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    
    xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"     
       xsi:schemaLocation="http://www.springframework.org/schema/beans 
       http://www.springframework.org/schema/beans/spring-beans.xsd 
       http://code.alibabatech.com/schema/dubbo 
       http://code.alibabatech.com/schema/dubbo/dubbo.xsd"> 
       
       <dubbo:protocol name="dubbo" port="20880"></dubbo:protocol>        
       <dubbo:application name="dubbo-service-test"/>    	
       <dubbo:registry address="zookeeper://192.168.56.121:2181" />  	
       	
       <dubbo:service interface="com.searchservice.test.service.HelloT" ref="helloImpl" version="1.0" />  
	   <bean id="helloImpl" class="com.searchservice.test.service.impl.HelloImpl"/> 
      

</beans> 

如果不是这个问题，建议查看是不是防火墙的问题，建议关掉试下