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From Peter Urban <Peter.Ur...@epfl.ch>
Subject mod_jserv/3832: JServ SSI v1.0 throws ClassCastException when calling non-HttpServlet Servlets
Date Thu, 04 Feb 1999 14:47:35 GMT

>Number:         3832
>Category:       mod_jserv
>Synopsis:       JServ SSI v1.0 throws ClassCastException when calling non-HttpServlet
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    jserv
>State:          open
>Class:          sw-bug
>Submitter-Id:   apache
>Arrival-Date:   Thu Feb  4 06:50:00 PST 1999
>Originator:     Peter.Urban@epfl.ch
>Release:        1.3.4
JServ SSI v1.0
Probably any Java compiler, any platform.
JDk 1.1.6, uname -a: SunOS lsesun14 5.6 Generic sun4u sparc SUNW,Ultra-1,
Apache 1.3.4, JServ 1.0b, JServ SSI 1.0.
JServ SSI v1.0 throws ClassCastException when the SERVLET tag of the
page it processes refers to a servlet which is not an HttpServlet
(but, let's say, a GenericServlet).

The exception is thrown in JServSSI.java, line 904, in member
    void runServlet(ServletInfo info, ServletContext context,
      HttpServletResponse res)
    throws ServletException, IOException
Take an HTML page with a SERVLET tag, change the servlet to be any servlet
extending let's say GenericServlet, load the page and see the exception
in the Page Source window of netscape.
Change JServSSI.java:904 from

  HttpServlet servlet = (HttpServlet)context.getServlet(className);


  Servlet servlet = context.getServlet(className);

thus removing the unnecessary cast.
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