I'm doing migration from seam JBoss 4.2.2 + seam v2.2.0.GA to JBoss 7 + seam v2.3.0.Final, in my previous code i can access the seam context with following way without issue:
@Override
protected void service(final HttpServletRequest arg0, final HttpServletResponse arg1) throws ServletException, IOException {
new ContextualHttpServletRequest(arg0) {
@Override
public void process() throws Exception {
doWork(arg0, arg1);
}
}.run();
}
However after migration to seam v2.3.0, i got NPE, found that the NPE happened in "ServletContexts.instance()" showed in following code:
org.jboss.seam.servlet.ContextualHttpServletRequest
public void run() throws ServletException, IOException
{
log.debug("beginning request");
// Force creation of the session
if (request.getSession(false) == null)
{
request.getSession(true);
}
// Begin request and Seam life cycle only if it is not nested
// ContextualHttpServletRequest
if (getCounterValue() == 0)
{
ServletLifecycle.beginRequest(request);
ServletContexts.instance().setRequest(request);
restoreConversationId();
Manager.instance().restoreConversation();
ServletLifecycle.resumeConversation(request);
handleConversationPropagation();
}
...
}
org.jboss.seam.web.ServletContexts
public static ServletContexts instance()
{
if ( !Contexts.isEventContextActive() )
{
throw new IllegalStateException("no event context active");
}
return (ServletContexts) Component.getInstance(ServletContexts.class, ScopeType.EVENT);
}
In the log, i saw trace message "Seam component not found: org.jboss.seam.web.servletContexts".
Anybody know why? My project is a WAR resided in an EAR.
