RE: getServletContext() error

[Jeff Macomber]

Please ignore the previous message I found the problem and it was just a
mistake on my side.  



-----Original Message-----
From: Jeff Macomber [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, April 17, 2002 5:39 PM
To: 'Tomcat Users List'
Subject: getServletContext() error 


Hi all,

I am trying to share an object from a servlet to a JSP by using the
getServletContext().setAttribute() method in the init() of my servlet.  I am
able to return the context from the JSP page but am unable to retrieve the
attribute (getAttribute() returns null). 

I have setup the Context in the Server.xml file to contain
crossContext="true" and override="true" for the jsp context.  This allowed
me to get the context as a non-null object.  The attribute name and case are
the same as in the setAttribute() statement.  Also in the Servlet I am
calling super.init(ServletConfig) so I am pretty sure that the Attribute is
being added correctly.  This technique worked in the 3.X versions of tomcat
but I have tried it on both 4.0.1 and 4.0.3 and am not making any progress.
If anyone has some experience with using a servlet context in a JSP I would
gladly take any advice.  

Server.xml snippet:
<!--This is the Servlet Context -->
<Context path="/DBPoolingServer" docBase="DBPoolingServer"
    reloadable="true" crossContext="true" debug="9" override="true"/>
<!--This is the Context for the JSP webapp-->
<Context path="/test" docBase="test"
    reloadable="true" crossContext="true" debug="9" override="true"/>

Servlet web.xml mappings:
<servlet-mapping>
  <servlet-name>dbpoolingservlet</servlet-name>
  <url-pattern>/dbpoolingservlet</url-pattern>
</servlet-mapping>

Servlet init() snippet:

 public void init(ServletConfig config) throws ServletException {
    super.init(config);

    mDBPoolHandler = new DBPoolingHandler();
    mDBPoolHandler.initialize();

    getServletContext().setAttribute("DBPool", mDBPoolHandler);
  }

JSP Snippet:

 ServletContext lContext =
application.getContext("/DBPoolingServer/dbpoolingservlet/*");
  if (lContext != null) {
   Object lHandler = lContext.getAttribute("DBPool");
   if (lHandler != null) {
    Object lConn = new String();
    if (lConn !=null) {
      out.println("Connected");
    }else {
      out.println("not connected");
    }
   } else {
     out.println("lHandler = null");
   }
 } else {
   out.println("Context = null");
 }

The JSP example above returns a non-null lContext and then a null lHandler.
So the getAttribute() appears to be failing.  

Any help would be appreciated.

Jeff

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