Question

The following web.xml doesn’t seem to work:

<servlet-mapping>
    <servlet-name>MyServlet</servlet-name>
    <url-pattern>*.wfn</url-pattern>
</servlet-mapping>

<welcome-file-list>
    <welcome-file>SelectSessionServer.wfn</welcome-file>
</welcome-file-list>

Instead, a directory listing is shown. I have an index.html file in there, and that index.html file has a link to exactly the same SelectSessionServer URL, and then it works properly.

(“it” = Glassfish & Tomcat)

How come ?

I’ve seen this question ( servlet as welcome-file-list in tomcat 7 ) and its responses seem to suggest that my setup should be working.

Answer 1

Make sure that your web.xml root declaration conforms Servlet 3.0 in order to map a servlet on a welcome file. You’re using Tomcat 7 and (supposedly) Glassfish 3, which are Servlet 3.0 containers, so you should make sure that your web.xml is also declared as such.

<web-app 
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    version="3.0">

It’ll also give additional benefits of new Servlet 3.0 features such as @WebServlet annotation and so on.