dubbo Failed to check the status of the service com.user.service.UserService. No provider available for the service

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userService': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalStateException: Failed to check the status of the service com.user.service.UserService. No provider available for the service com.user.service.UserService from the url zookeeper://localhost:2181/com.alibaba.dubbo.registry.RegistryService?application=userservice&dubbo=2.5.3&interface=com.user.service.UserService&methods=add&pid=39796&protocol=dubbo&side=consumer&timeout=15000&timestamp=1515132772468 to the consumer 10.100.130.245 use dubbo version 2.5.3

服務提供方：
<?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">
    <!--服務提供方服務信息-->
    <dubbo:application name="userclient"/>

    <!--注冊中心服務地址-->
    <dubbo:registry id="zookeeper" protocol="zookeeper" address="${dubbo.registry.address}"/>

    <!--用dubbo協議在30001-->
    <dubbo:protocol name="dubbo" port="20880" dispather="all" threadpool="cached" threads="5000"/>
    <!--聲明需要暴露的服務接口-->
    <dubbo:service interface="com.user.service.UserService" ref="userService" version="1.0"
                   registry="zookeeper" owner="shp"/>
    <!--具體服務接口實現-->
    <bean id="userService" class="com.user.service.impl.userServiceImpl"/>
</beans>


消費者

<?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="userservice"/>

    <dubbo:registry id="zookeeper" protocol="zookeeper" address="${dubbo.registry.address}"/>
    <dubbo:reference id="userService" interface="com.user.service.UserService" protocol="dubbo" timeout="15000"/>

</beans>

解決方案： 在 消費者配置文件 dubbo:reference 標簽添加 version="1.0",解決。

<dubbo:reference version="1.0" id="userService" interface="com.user.service.UserService" protocol="dubbo" timeout="15000"/>