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Posted to issues@cxf.apache.org by "Dennis Kieselhorst (Jira)" <ji...@apache.org> on 2019/10/26 10:52:00 UTC
[jira] [Commented] (CXF-8100) JAXB Class Not Found Exception on
Java >=9 and Tomcat
[ https://issues.apache.org/jira/browse/CXF-8100?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16960315#comment-16960315 ]
Dennis Kieselhorst commented on CXF-8100:
-----------------------------------------
Hi [~mrcrab] can you share a WAR file so that we can deploy it for testing?
Please note that you are using some old dependencies, e.g. jaxb-core is no longer valid. You should consistently use the 2.3.2 version and add:
<{color:#000080}dependency{color}>
<{color:#000080}groupId{color}>jakarta.xml.bind</{color:#000080}groupId{color}>
<{color:#000080}artifactId{color}>jakarta.xml.bind-api</{color:#000080}artifactId{color}>
<{color:#000080}version{color}>2.3.2</{color:#000080}version{color}>
</{color:#000080}dependency{color}>
<{color:#000080}dependency{color}>
<{color:#000080}groupId{color}>org.glassfish.jaxb</{color:#000080}groupId{color}>
<{color:#000080}artifactId{color}>jaxb-runtime</{color:#000080}artifactId{color}>
<{color:#000080}version{color}>2.3.2</{color:#000080}version{color}>
</{color:#000080}dependency{color}>
> JAXB Class Not Found Exception on Java >=9 and Tomcat
> -----------------------------------------------------
>
> Key: CXF-8100
> URL: https://issues.apache.org/jira/browse/CXF-8100
> Project: CXF
> Issue Type: Bug
> Components: Core
> Affects Versions: 3.3.3
> Environment: Ubuntu 18.10
> OpenJDK Runtime Environment (build 12.0.1+12)
> Tomcat 9.0.14
> Reporter: Christof R
> Priority: Major
> Labels: bug
>
> When creating a SOAP Client with JaxWsProxyFactoryBean.create(), JAXB's class loader does not find the context factory (see stack trace at the bottom) and throws a ClassNotFound Exception. This does *not* happen when I run test with Junit, but it happens when I deploy my Apache CXF Application to Tomcat. All the JAXB artifacts (cxf-rt-databinding-jaxb-3.3.0.jar, jaxb-api-2.3.1.jar, jaxb-core-2.3.0.1.jar, jaxb-impl-2.3.2.jar, jaxb-runtime-2.3.1.jar and jaxb-xjc-2.3.2.jar) are in WEB-INF/lib and are therefore available to the web apps class loader.
> The reason why JAXB does not find the class is, according to the stack overflow post [JAXB not available on Tomcat 9 and Java 9/10|https://stackoverflow.com/questions/51518781/jaxb-not-available-on-tomcat-9-and-java-9-10], that JAXB uses the "thread's context class loader". In Tomcat, this class loader is the system class loader, and because Tomcat [builds a class loader hierarchy|https://tomcat.apache.org/tomcat-9.0-doc/class-loader-howto.html], the system class loader does not know about a web app's dependencies. JAXB Implementations were removed from the JRE in Java 9 and now the system class loader does not find them.
> According to the mentioned post, this problem could be solved by refactoring org.apache.cxf.common.jaxb.JAXBContextCache and switching invocations from
>
> {code:java}
> newInstance( Class<?>[] classesToBeBound, Map<String,?> properties )
> {code}
> to
> {code:java}
> newInstance( String contextPath, ClassLoader classLoader, Map<String,?> properties)
> {code}
> , where JAXBContextCache could pass down the correct classLoader. Another probably "hacky" solution is to wrap all interactions with JAXB in a proper thread (as described in this post: [JAXB Hell on JDK 9|https://sjhannah.com/blog/2018/11/21/jaxb-hell-on-jdk-9/]).
> Stack trace:
> {code:java}
> Caused by: org.apache.cxf.service.factory.ServiceConstructionException: null
> at org.apache.cxf.jaxb.JAXBDataBinding.initialize(JAXBDataBinding.java:355)
> at org.apache.cxf.service.factory.AbstractServiceFactoryBean.initializeDataBindings(AbstractServiceFactoryBean.java:86)
> at org.apache.cxf.wsdl.service.factory.ReflectionServiceFactoryBean.buildServiceFromClass(ReflectionServiceFactoryBean.java:470)
> at org.apache.cxf.jaxws.support.JaxWsServiceFactoryBean.buildServiceFromClass(JaxWsServiceFactoryBean.java:693)
> at org.apache.cxf.wsdl.service.factory.ReflectionServiceFactoryBean.initializeServiceModel(ReflectionServiceFactoryBean.java:530)
> at org.apache.cxf.wsdl.service.factory.ReflectionServiceFactoryBean.create(ReflectionServiceFactoryBean.java:263)
> at org.apache.cxf.jaxws.support.JaxWsServiceFactoryBean.create(JaxWsServiceFactoryBean.java:199)
> at org.apache.cxf.frontend.AbstractWSDLBasedEndpointFactory.createEndpoint(AbstractWSDLBasedEndpointFactory.java:103)
> at org.apache.cxf.frontend.ClientFactoryBean.create(ClientFactoryBean.java:91)
> at org.apache.cxf.frontend.ClientProxyFactoryBean.create(ClientProxyFactoryBean.java:159)
> at org.apache.cxf.jaxws.JaxWsProxyFactoryBean.create(JaxWsProxyFactoryBean.java:142)
> ...
> Caused by: javax.xml.bind.JAXBException: Implementation of JAXB-API has not been found on module path or classpath.
> at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:232)
> at javax.xml.bind.ContextFinder.find(ContextFinder.java:375)
> at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:691)
> at org.apache.cxf.common.jaxb.JAXBContextCache$2.run(JAXBContextCache.java:346)
> at org.apache.cxf.common.jaxb.JAXBContextCache$2.run(JAXBContextCache.java:344)
> at java.base/java.security.AccessController.doPrivileged(AccessController.java:551)
> at org.apache.cxf.common.jaxb.JAXBContextCache.createContext(JAXBContextCache.java:344)
> at org.apache.cxf.common.jaxb.JAXBContextCache.getCachedContextAndSchemas(JAXBContextCache.java:246)
> at org.apache.cxf.jaxb.JAXBDataBinding.createJAXBContextAndSchemas(JAXBDataBinding.java:498)
> at org.apache.cxf.jaxb.JAXBDataBinding.initialize(JAXBDataBinding.java:353)
> ... 23 common frames omitted
> Caused by: java.lang.ClassNotFoundException: com.sun.xml.internal.bind.v2.ContextFactory
> at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:583)
> at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
> at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
> at javax.xml.bind.ServiceLoaderUtil.nullSafeLoadClass(ServiceLoaderUtil.java:92)
> at javax.xml.bind.ServiceLoaderUtil.safeLoadClass(ServiceLoaderUtil.java:125)
> at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:230)
> {code}
>
>
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