[jboss-user] [JBoss Seam] - Remoting: Exception during loadResourceProviders

[cfthomas]

Hi!

I got my information from here http://docs.jboss.com/seam/2.0.0.CR2/reference/en/html/remoting.html

please tell me what I did wrong.

My setup is like this:

  | app.ear
  |   ejb.jar
  |     com/acme/..
  |     META-INF
  |       components.xml
  |       ejb-jar.xml
  |       persistence.xml
  |   web.war
  |     <resources>
  |     WEB-INF
  |       lib/jboss-seam-remoting.jar
  |       web.xml
  |   jboss-seam-debug.jar
  |   jboss-seam.jar
  | 

my components.xml:

  | <?xml version="1.0" encoding="UTF-8"?>
  | <components xmlns="http://jboss.com/products/seam/components"
  |             xmlns:core="http://jboss.com/products/seam/core"
  |             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  |             xsi:schemaLocation=
  |                 "http://jboss.com/products/seam/core http://jboss.com/products/seam/core-2.0.xsd
  |                  http://jboss.com/products/seam/components http://jboss.com/products/seam/components-2.0.xsd">
  | 
  |     <core:init jndi-pattern="myapp/#{ejbName}/local"/>
  | 
  | 
  | </components>
  | 
  | 

my web.xml:

  | <?xml version="1.0" encoding="UTF-8"?>
  | <web-app version="2.4"
  |          xmlns="http://java.sun.com/xml/ns/j2ee"
  |          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  |          xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
  | 
  |     <servlet>
  |         <servlet-name>Seam Resource Servlet</servlet-name>
  |         <servlet-class>org.jboss.seam.servlet.SeamResourceServlet</servlet-class>
  |     </servlet>
  | 
  |     <servlet-mapping>
  |         <servlet-name>Seam Resource Servlet</servlet-name>
  |         <url-pattern>/seam/resource/*</url-pattern>
  |     </servlet-mapping>
  | 
  | </web-app>
  | 

Now the problem is when accessing resources via seam/resource/*

I get the follwing exception

  | 12:01:53,919 ERROR [[Seam Resource Servlet]] Allocate exception for servlet Seam Resource Servlet
  | java.lang.NullPointerException
  |         at org.jboss.seam.servlet.SeamResourceServlet.loadResourceProviders(SeamResourceServlet.java:43)
  |         at org.jboss.seam.servlet.SeamResourceServlet.init(SeamResourceServlet.java:35)
  |         at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1161)
  |         at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:806)
  |         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:129)
  |         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
  |         at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
  |         at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
  |         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
  |         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
  |         at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
  |         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
  |         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241)
  |         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
  |         at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:580)
  |         at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
  |         at java.lang.Thread.run(Thread.java:637)
  | 

I debugged the problem and here the NPE occurs:

  |    protected void loadResourceProviders()
  |    {
  |       Context tempApplicationContext = new ApplicationContext( new ServletApplicationMap(context) );
  | 
  |       Init init = (Init) tempApplicationContext.get(Init.class);
  |       /**
  |        * Here init == null !!
  |        */
  |       for (String name : init.getResourceProviders())
  |       {
  |          AbstractResource provider = (AbstractResource) tempApplicationContext.get(name);
  |          if (provider != null)
  |          {
  |             provider.setServletContext(context);
  |             providers.put( provider.getResourcePath(), provider );
  |          }
  |       }
  |    }
  | 

Thank you,

Thomas

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