[ROL-2057] Missing NPE check in Roller PageServlet class

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 5.1.1
• Fix Version/s: 5.1.2
• Component/s: User Interface - General
• Environment: WildFly8.2.0.Final
• Assignee: Roller Unassigned
• Reporter: Kohei Nozaki
• Created: 29/Dec/14 09:20
• Updated: 30/Mar/15 12:57
• Resolved: 05/Jan/15 01:30

Description

After I finish procedures of official installation guide for JBoss,
and I create a new blog, but the blog can't be visible.
URLs of the top page or the blog are always returning status 500,
and many NPEs are dumped on logs. like this:

<snip>
Caused by: java.lang.NullPointerException
at io.undertow.servlet.spec.ServletContextImpl.getMimeType(ServletContextImpl.java:192)
at org.apache.roller.weblogger.ui.rendering.servlets.PageServlet.doGet(PageServlet.java:423)
<snip>

It looks like that the cause is came from WildFly implementation of ServletContext.
(https://github.com/undertow-io/undertow/blob/master/servlet/src/main/java/io/undertow/servlet/spec/ServletContextImpl.java)
It has no null-check of the argument.