spring-flex-1.0: Unable to locate Spring NamespaceHandler

[edward_he2008]

Hi, all

I always meet 'Configuration problem: Unable to locate Spring NamespaceHandler for XML schema namespace [http://www.springframework.org/schema/flex]' as follows when I try the org.springframework.flex-1.0.0.RELEASE and 1.0.0.RC2 in Spring OSGI ENV:

4682 [Timer-2] ERROR org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/simpleweb] - Servlet /simpleweb threw load() exception
org.springframework.beans.factory.parsing.BeanDefi nitionParsingException: Configuration problem: Unable to locate Spring NamespaceHandler for XML schema namespace [http://www.springframework.org/schema/flex]
Offending resource: ServletContext resource [/WEB-INF/osgiwebmvc-servlet.xml]

at org.springframework.beans.factory.parsing.FailFast ProblemReporter.error(FailFastProblemReporter.java :68)
at org.springframework.beans.factory.parsing.ReaderCo ntext.error(ReaderContext.java:85)
at org.springframework.beans.factory.parsing.ReaderCo ntext.error(ReaderContext.java:80)
at org.springframework.beans.factory.xml.BeanDefiniti onParserDelegate.error(BeanDefinitionParserDelegat e.java:281)
at org.springframework.beans.factory.xml.BeanDefiniti onParserDelegate.parseCustomElement(BeanDefinition ParserDelegate.java:1294)
at org.springframework.beans.factory.xml.BeanDefiniti onParserDelegate.parseCustomElement(BeanDefinition ParserDelegate.java:1287)
at org.springframework.beans.factory.xml.DefaultBeanD efinitionDocumentReader.parseBeanDefinitions(Defau ltBeanDefinitionDocumentReader.java:135)
at org.springframework.beans.factory.xml.DefaultBeanD efinitionDocumentReader.registerBeanDefinitions(De faultBeanDefinitionDocumentReader.java:92)
at org.springframework.beans.factory.xml.XmlBeanDefin itionReader.registerBeanDefinitions(XmlBeanDefinit ionReader.java:507)
at org.springframework.beans.factory.xml.XmlBeanDefin itionReader.doLoadBeanDefinitions(XmlBeanDefinitio nReader.java:398)
at org.springframework.beans.factory.xml.XmlBeanDefin itionReader.loadBeanDefinitions(XmlBeanDefinitionR eader.java:342)
at org.springframework.beans.factory.xml.XmlBeanDefin itionReader.loadBeanDefinitions(XmlBeanDefinitionR eader.java:310)
at org.springframework.beans.factory.support.Abstract BeanDefinitionReader.loadBeanDefinitions(AbstractB eanDefinitionReader.java:143)
at org.springframework.beans.factory.support.Abstract BeanDefinitionReader.loadBeanDefinitions(AbstractB eanDefinitionReader.java:178)
at org.springframework.beans.factory.support.Abstract BeanDefinitionReader.loadBeanDefinitions(AbstractB eanDefinitionReader.java:149)
at org.springframework.web.context.support.XmlWebAppl icationContext.loadBeanDefinitions(XmlWebApplicati onContext.java:124)
at org.springframework.web.context.support.XmlWebAppl icationContext.loadBeanDefinitions(XmlWebApplicati onContext.java:92)
at org.springframework.context.support.AbstractRefres hableApplicationContext.refreshBeanFactory(Abstrac tRefreshableApplicationContext.java:123)
at org.springframework.context.support.AbstractApplic ationContext.obtainFreshBeanFactory(AbstractApplic ationContext.java:422)
at org.springframework.context.support.AbstractApplic ationContext.refresh(AbstractApplicationContext.ja va:352)
at org.springframework.web.servlet.FrameworkServlet.c reateWebApplicationContext(FrameworkServlet.java:4 02)
at org.springframework.web.servlet.FrameworkServlet.i nitWebApplicationContext(FrameworkServlet.java:316 )
at org.springframework.web.servlet.FrameworkServlet.i nitServletBean(FrameworkServlet.java:282)
at org.springframework.web.servlet.HttpServletBean.in it(HttpServletBean.java:126)
at javax.servlet.GenericServlet.init(GenericServlet.j ava:241)
at org.apache.catalina.core.StandardWrapper.loadServl et(StandardWrapper.java:1139)
at org.apache.catalina.core.StandardWrapper.load(Stan dardWrapper.java:966)
at org.apache.catalina.core.StandardContext.loadOnSta rtup(StandardContext.java:3956)
at org.apache.catalina.core.StandardContext.start(Sta ndardContext.java:4230)
at org.apache.catalina.core.ContainerBase.addChildInt ernal(ContainerBase.java:760)
at org.apache.catalina.core.ContainerBase.addChild(Co ntainerBase.java:740)
at org.apache.catalina.core.StandardHost.addChild(Sta ndardHost.java:544)
at org.springframework.osgi.web.deployer.tomcat.Tomca tWarDeployer.startCatalinaContext(TomcatWarDeploye r.java:144)
at org.springframework.osgi.web.deployer.tomcat.Tomca tWarDeployer.startDeployment(TomcatWarDeployer.jav a:133)
at org.springframework.osgi.web.deployer.support.Abst ractWarDeployer.deploy(AbstractWarDeployer.java:93 )
at org.springframework.osgi.web.extender.internal.act ivator.WarLoaderListener$DeploymentManager$DeployT ask.doRun(WarLoaderListener.java:244)
at org.springframework.osgi.web.extender.internal.act ivator.WarLoaderListener$DeploymentManager$BaseTas k.run(WarLoaderListener.java:216)
at org.springframework.scheduling.timer.DelegatingTim erTask.run(DelegatingTimerTask.java:66)
at java.util.TimerThread.mainLoop(Timer.java:512)
at java.util.TimerThread.run(Timer.java:462)

What's the root cause? Why other spring can locate other name space?
Please help me, thanks in advance.

[edward_he2008]

web.xml:
...
<context-param>
<param-name>contextClass</param-name>
<param-value>
org.springframework.osgi.web.context.support.OsgiB undleXmlWebApplicationContext
</param-value>
</context-param>
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListe ner
</listener-class>
</listener>

<servlet>
<servlet-name>osgiwebmvc</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>

<servlet-mapping>
<servlet-name>osgiwebmvc</servlet-name>
<url-pattern>/messagebroker/*</url-pattern>
</servlet-mapping>
...

osgiwebmvc-servlet.xml:

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:flex="http://www.springframework.org/schema/flex"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/flex
http://www.springframework.org/schema/flex/spring-flex-1.0.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

<flex:message-broker/>
....
</beans>

[edward_he2008]

Hi, all

I figured it out! The root cause is that spring runtime can not find the required jar file, so can not find the namespace handler defined in it.

It is very easy to slove it, you can add the org.springframework.flex-1.0.0.RELEASE.jar to classpath via Bundle-ClassPath.

Now my sample can work with Spring OSGI bundle ENV rather than Spring bean.

However, I still doubt it is a bug of Spring intergration:
why spring runtime can not load it automatically since it is really a bundle.