Thanks for your reply,
This is the URL I am using http://localhost:8080/jdbctut/jdbctut.jsp
The class file is going into the webapps/jdbctut/Web-inf/classes of the
standard tom-cat installation.
I am using ant and the standard build.
Thanks again,
Chuck
> -----Original Message-----
> From: Milt Epstein [SMTP:[EMAIL PROTECTED]]
> Sent: Saturday, March 10, 2001 9:26 AM
> To: [EMAIL PROTECTED]
> Subject: Re: getServletContext null pointer exception
>
> On Fri, 9 Mar 2001 [EMAIL PROTECTED] wrote:
>
> > Hi,
> >
> > I have been unable to get at the servletcontext param values. I keep
> > getting the null pointer exception.
> > I have looked thru all the archives and quite a few sites trying all the
> > recommendations, but to no avail.
> > Must be doing something really stupid, or I've missed a basic concept
> > somewhere.
> > I am running tomcat 3.2.1
> >
> > Any hints would be gratefully appreciated.
> > Thanks in advance.
> > Chuck
>
> What URL are you using to access the servlet? Where (in the directory
> structure) is your servlet class located?
>
>
> > Here's my web.xml and the code trying to get at it.
> >
> > <web-app>
> > <display-name>jdbctut</display-name>
> > <description>This is version X.X of an application to
> > perform</description>
> > <context-param>
> > <param-name>dbuser</param-name>
> > <param-value>fabdev</param-value>
> > <description>User name to logon to the Db.</description>
> > </context-param>
> > <servlet>
> > <servlet-name>DataBaseSelect</servlet-name>
> > <description> This servlet </description>
> > <servlet-class>DataBaseSelect</servlet-class>
> > <!-- Load this servlet at server startup time -->
> > <load-on-startup>5</load-on-startup>
> > </servlet>
> > <servlet-mapping>
> > <servlet-name>DataBaseSelect</servlet-name>
> > <url-pattern>jdbctut</url-pattern>
> > </servlet-mapping>
> > <session-config>
> > <session-timeout>30</session-timeout> <!-- 30 minutes -->
> > </session-config>
> > </web-app>
> >
> > import java.sql.*;
> > import java.util.Vector;
> > import javax.servlet.http.*;
> > import javax.servlet.*;
> > import java.io.*;
> > public class DataBaseSelect extends HttpServlet {
> >
> > private Vector result;
> > private String url =
> > "jdbc:informix-sqli://poldev:2005/fabdev:INFORMIXSERVER=poldev_713_tcp";
> >
> > public void init( ServletConfig config ) throws
> > javax.servlet.ServletException{
> > super.init( config ) ; // Essential!!
> > }
> >
> > public DataBaseSelect() {
> > result = new Vector();
> > } // constructor DataBaseSelect
> >
> > public String connect() {
> > try {
> > Class.forName("com.informix.jdbc.IfxDriver").newInstance();
> > return "Driver Loaded!";
> > } catch (Exception E) {
> > return "Unable to load driver.";
> > }
> > }
> >
> > public String select() {
> > // String value = getServletContext().getInitParameter("dbuser");
> > //
> >
> System.out.println(getServletConfig().getServletContext().getInitParameter
> ("
> > dbuser"));
> > ServletConfig sc = getServletConfig();
> > ServletContext sctx = sc.getServletContext();
> > System.out.println(sctx.getInitParameter("dbuser"));
> >
> > try {
> > Connection C = DriverManager.getConnection(url, "fabdev",
> > "fabdev$");
> > Statement Stmt = C.createStatement();
> > ResultSet myResult = Stmt.executeQuery("SELECT lst_nm from
> > person_profile ORDER BY lst_nm");
> >
> > while (myResult.next()) {
> > result.addElement(myResult.getString(1));
> > }
> >
> > // Clean up
> > myResult.close();
> > Stmt.close();
> > C.close();
> > return "Connection Success!";
> > } catch (SQLException E) {
> > return "SQLException: " + E.getMessage();
> > }
> > }
> >
> > /**
> > * Accessor for result
> > **/
> > public Vector getResult() {
> > return result;
> > }
> >
> > /**
> > * Mutator for result
> > **/
> > public void setResult(Vector avector) {
> > result = avector;
> > }
> >
> > } // class DataBaseSelect
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > Sure there's apathy in the world.
> > But who cares.
> >
> >
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > For additional commands, email: [EMAIL PROTECTED]
> >
>
> Milt Epstein
> Research Programmer
> Software/Systems Development Group
> Computing and Communications Services Office (CCSO)
> University of Illinois at Urbana-Champaign (UIUC)
> [EMAIL PROTECTED]
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [EMAIL PROTECTED]
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