wildfly loading class from wrong jar - jar

Question

I am deploying my war file on Wildfly 9
I am getting exception which is quite strange.
17:40:27,952 ERROR [io.undertow.request] (default task-7) UT005023:
Exception handling request to /DirectRegistry/index.htm:
org.springframework.web.util.NestedServletException: Handler
processing fai led; nested exception is
java.lang.NoClassDefFoundError: javax/servlet/ServletInputStream
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:860)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:755)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:396)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:350)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:86)
at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)
at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.security.handlers.AuthenticationConstraintHandler.handleRequest(AuthenticationConstraintHandler.java:51)
at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
at io.undertow.servlet.handlers.security.ServletSecurityConstraintHandler.handleRequest(ServletSecurityConstraintHandler.java:56)
at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58)
at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:72)
at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:282)
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:261)
at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:80)
at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:172)
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:199)
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:774)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:722) Caused by: java.lang.NoClassDefFoundError: javax/servlet/ServletInputStream
at org.springframework.web.multipart.commons.CommonsMultipartResolver.isMultipart(CommonsMultipartResolver.java:110)
at org.springframework.web.servlet.DispatcherServlet.checkMultipart(DispatcherServlet.java:937)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:797)
... 34 more
Caused by: java.lang.ClassNotFoundException: javax.servlet.ServletInputStream >from [Module
"org.apache.commons-fileupload:main" from local module loader
#6c3a6465 (finder: local module finder #6d955a6 5 (roots:
C:\JAVA\WF9\wildfly-9.0.0.Final\modules,C:\JAVA\WF9\wildfly-9.0.0.Final\modules\system\layers\base))]
at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:205)
at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:455)
at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:404)
at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:385)
at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:130)
... 37 more
My jboss-deployment structure:
<?xml version="1.0" encoding="UTF-8"?>
<jboss-deployment-structure>
<deployment>
<dependencies>
<!--
we want to use the saaj module provided by JBoss
it looks like we can't use the implementation provided by the JDK - JBoss somehow does not seem to allow it
-->
<module name="com.sun.xml.messaging.saaj" />
<module name="javax.servlet.api"/>
<module name="com.gbst.directregistry.configuration" />
<module name="com.gbst.directregistry.hypersonic" />
<module name="org.apache.commons-fileupload"/>
</dependencies>
</deployment>
</jboss-deployment-structure>
javax.servlet.api in the service/layers/... is where it is located and I have seen that the class is located there.
org.apache.commons-fileupload is something I made myself to contain a class to solve an issue when i had this:
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>
seems like this CommonsMultipartResolver uses : org.apache.commons.fileupload.FileUpload which is not found in the system/layer/.. libs so i added my own lib in module\org\apache\commons-fileupload . Every time i try to invoke my url now it throws the error above. Why is WF trying to find ServletInputStream in org.apache.commons-fileupload even though it is already there in the WF System/layers/ libs even though it is located in javax.servlet.api. This is base libraries for WF so these should ahve precedence.
as for the commons-fileupload.jar is concerned it doesnt not have any Javax package. so i am not sure why is it looking into this jar.
Appreciate any insight.