dubbo服务提供者在tomcat启动失败的问题

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发布于 2018-01-04 15:55:36

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发布于 2018-01-04 15:55:36

dubbo的服务提供者是个web服务，打成war包后在tomcat启动失败，查看tomcat的logs目录下的localhost.2017-05-15.log文件，错误信息如下：

org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 67 in XML document from class path resource [spring-mvc.xml] is invalid; nested exception is org.xml.sax.SAXParseException; lineNumber: 67; columnNumber: 53; cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can be found for element 'dubbo:application'.
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:396)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:302)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:174)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:209)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:180)
    at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:125)
    at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:94)
    at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:131)
    at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:530)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:444)
    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:631)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:588)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:645)
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:508)
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:449)
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:133)
    at javax.servlet.GenericServlet.init(GenericServlet.java:158)
    ... 
    ... 
    ...

看起来应该是xml文件中的dubbo:application没有通过dtd检查，去网上搜了一下这个错误，都是说在eclipse中开发dubbo服务的时候可能会遇到这个错误，但我这是在tomcat运行中报错的，并非开发工具eclipse报错，而且正常情况下这个dtd文件已经打包进了dubbo.jar文件中，spring应该能找到并且使用。

再仔细看一下spring的配置文件，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:context="http://www.springframework.org/schema/context"
    xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
                            http://www.springframework.org/schema/beans/spring-beans-3.1.xsd  
                            http://www.springframework.org/schema/context  
                            http://www.springframework.org/schema/context/spring-context-3.1.xsd">
    <!-- 自动扫描 -->
    <context:component-scan base-package="com.bolingcavalry" />

    <dubbo:application name="dubbo_service_provider" />
    <dubbo:registry address="zookeeper://zkhost:2181" />
    <dubbo:protocol name="dubbo" port="20880" />
    <dubbo:service interface="com.bolingcavalry.service.CalculateService"
                   ref="calculateService" />
    <!-- 和本地bean一样实现服务 -->
    <bean id="calculateService" class="com.bolingcavalry.service.impl.CalculateServiceImpl" />
</beans>

果然有问题，xsi:schemaLocation属性漏掉了dubbo的xsd地址信息，赶紧加上去，如下图红框位置：