[Dubbox异常] Unable to locate Spring NamespaceHandler for XML schema namespace [http://dubbo.apache[

今天药忘吃喽~ 2022-12-31 03:22 95阅读 0赞

### 前言 ###

*  异常

*  配置文件

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
           xmlns="http://www.springframework.org/schema/beans"
           xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
          http://dubbo.apache.org/schema/dubbo
    http://dubbo.apache.org/schema/dubbo/dubbo.xsd">
    
    	<dubbo:application name="userprovider" owner="yanxml" organization="yanxml" />
    	<dubbo:registry address="zookeeper://127.0.0.1:2181" />
    	<dubbo:monitor protocol="registry" />
    
    	<dubbo:protocol name="rest" port="9999" contextpath="services"
    		server="tomcat"  />
    
    	<dubbo:service interface="com.yanxml.arsenal.java.dubbox.provider.http.remould.service.IHelloControllerProvider"
    		ref="helloControllerProvider" protocol="rest"  />
    	<bean id="helloControllerProvider" class="com.yanxml.arsenal.java.dubbox.provider.http.remould.service.HelloControllerProvider" />
    </beans>

*  一开始我以为异常是因为`spring`的`xsd`文件版本与本地版本不一致导致的.  
    `spring-beans-2.0.xsd`改成`spring-beans-4.2.xsd`并不起效果。

Unable to locate Spring NamespaceHandler for XML schema namespace

*  后来才发现是`dubbo`的`xsd`文件导致.

将`http://dubbo.apache.org/schema/dubbo`改造`http://code.alibabatech.com/schema/dubbo`即可解决问题.

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
           xmlns="http://www.springframework.org/schema/beans"
           xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
           http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
    
    	<dubbo:application name="userprovider" owner="yanxml" organization="yanxml" />
    	<dubbo:registry address="zookeeper://127.0.0.1:2181" />
    	<dubbo:monitor protocol="registry" />
    
    	<dubbo:protocol name="rest" port="9999" contextpath="services"
    		server="tomcat"  />
    
    	<dubbo:service interface="com.yanxml.arsenal.java.dubbox.provider.http.remould.service.IHelloControllerProvider"
    		ref="helloControllerProvider" protocol="rest"  />
    	<bean id="helloControllerProvider" class="com.yanxml.arsenal.java.dubbox.provider.http.remould.service.HelloControllerProvider" />
    </beans>

--------------------

### 原因 ###

*  一开始也挺疑惑的. 因为xsd文件是可以访问到的.  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA0MTYxMDE_size_16_color_FFFFFF_t_70]
 *  后来经过看别人博客提醒发现. 本地使用的`dubbo`内的xsd

> 问题在于: dubbo-config-spring-2.6.1.jar --> META-INF–>spring.handlers 中的配置还是之前的域名 code.alibabatech.com , 而现在在github上下载的dubbo 代码里面却是: dubbo.apache.org 被坑了吧…  
> ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA0MTYxMDE_size_16_color_FFFFFF_t_70 1]  
> ![在这里插入图片描述][20201228005235336.png]  
> 域名都是`code.alibabatech.com`. 这个应该都是`alibaba`的内部域名. 所以我们外部也无法访问。

所以, 我们一般使用本地Eclipse导入xsd文件的方式解决这个问题。

--------------------

### 附件-异常全 ###

org.springframework.beans.factory.parsing.BeanDefinitionParsingException: Configuration problem: Unable to locate Spring NamespaceHandler for XML schema namespace [http://dubbo.apache.org/schema/dubbo]
    Offending resource: class path resource [provider.xml]
    
    	at org.springframework.beans.factory.parsing.FailFastProblemReporter.error(FailFastProblemReporter.java:70) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.beans.factory.parsing.ReaderContext.error(ReaderContext.java:85) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.beans.factory.parsing.ReaderContext.error(ReaderContext.java:80) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.error(BeanDefinitionParserDelegate.java:301) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1408) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1401) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:168) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.doRegisterBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:138) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:94) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:508) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:392) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:336) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:304) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:181) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:217) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:188) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsFromImportedResources(ConfigurationClassBeanDefinitionReader.java:346) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:142) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:116) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:333) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:243) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:273) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:98) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:677) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:519) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE]
    	at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118) ~[spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
    	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:752) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
    	at org.springframework.boot.SpringApplication.doRun(SpringApplication.java:347) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
    	at org.springframework.boot.SpringApplication.run(SpringApplication.java:295) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
    	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1112) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
    	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1101) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
    	at com.yanxml.arsenal.java.dubbox.http.remould.Application.main(Application.java:14) [classes/:na]

--------------------

### Reference ###

\[1\]. [Unable to locate Spring NamespaceHandler for XMLschemanamespace http://dubbo.apache.org/schema/dubbo][Unable to locate Spring NamespaceHandler for XMLschemanamespace http_dubbo.apache.org_schema_dubbo]  
\[2\]. [Dubbo Unable to locate Spring NamespaceHandler for XML schema namespace][]  
\[3\]. [Spring加载xml文件错误异常：Offending resource: class path resource \[spring-context.xml\];][Spring_xml_Offending resource_ class path resource _spring-context.xml]  
\[4\]. [Unable to locate Spring NamespaceHandler for XML schema namespace异常解决][Unable to locate Spring NamespaceHandler for XML schema namespace]  
\[5\]. [Referenced file contains errors (http://www.springframework.org/schema/beans/spring-beans-3.1.xsd) ][Referenced file contains errors _http_www.springframework.org_schema_beans_spring-beans-3.1.xsd_]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA0MTYxMDE_size_16_color_FFFFFF_t_70]: /images/20221120/1df2f800300d40909c5f0cbee2501df7.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA0MTYxMDE_size_16_color_FFFFFF_t_70 1]: /images/20221120/ed9a764362f045dd982a05861715a2e0.png
[20201228005235336.png]: https://img-blog.csdnimg.cn/20201228005235336.png
[Unable to locate Spring NamespaceHandler for XMLschemanamespace http_dubbo.apache.org_schema_dubbo]: https://blog.csdn.net/niugang0920/article/details/81944865
[Dubbo Unable to locate Spring NamespaceHandler for XML schema namespace]: https://blog.csdn.net/huweijun_2012/article/details/80239803
[Spring_xml_Offending resource_ class path resource _spring-context.xml]: https://blog.csdn.net/com15169113041/article/details/78196311
[Unable to locate Spring NamespaceHandler for XML schema namespace]: https://blog.csdn.net/u011726984/article/details/44317517
[Referenced file contains errors _http_www.springframework.org_schema_beans_spring-beans-3.1.xsd_]: https://zhidao.baidu.com/question/571289668.html