I've commented out those particular error-checks for testing but with
them in or out whatever I put in the same message *always* comes up.
Even if I've changed the source file the error is always reported at
Line 30.
On Mon, 2004-04-19 at 11:27, Thomas Chua wrote:
> could the userid or passwd be null???
>
>
>
>
> "Adam Buglass" <[EMAIL PROTECTED]>
> 04/19/2004 06:05 PM
> Please respond to "Tomcat Users List"
>
>
> To: "Tomcat Users List" <[EMAIL PROTECTED]>
> cc:
>
> Subject: Re: Mysterious Null Pointer Exception in Login script
>
>
>
> Thanks, but I already had a look.
> The line causing the error in that file is the line that calls the
> method: thisUser.login( userid, passwd );
>
> Which itself appears to be causing the error, or am I missing something?
>
> The login_jsp.java file looks like this of you're interested:
>
> package org.apache.jsp;
>
> import javax.servlet.*;
> import javax.servlet.http.*;
> import javax.servlet.jsp.*;
> import org.apache.jasper.runtime.*;
>
> public class login_jsp extends HttpJspBase {
>
>
> private static java.util.Vector _jspx_includes;
>
> public java.util.List getIncludes() {
> return _jspx_includes;
> }
>
>
> public void _jspService(HttpServletRequest request,
> HttpServletResponse response)
> throws java.io.IOException, ServletException {
>
> JspFactory _jspxFactory = null;
> javax.servlet.jsp.PageContext pageContext = null;
> HttpSession session = null;
> ServletContext application = null;
> ServletConfig config = null;
> JspWriter out = null;
> Object page = this;
> JspWriter _jspx_out = null;
>
> try {
> _jspxFactory = JspFactory.getDefaultFactory();
> response.setContentType("text/html;charset=ISO-8859-1");
> pageContext = _jspxFactory.getPageContext(this, request, response,
> null, true, 8192, true);
> application = pageContext.getServletContext();
> config = pageContext.getServletConfig();
> session = pageContext.getSession();
> out = pageContext.getOut();
> _jspx_out = out;
>
> ISPSelfCare.Login thisUser = null;
> synchronized (session) {
> thisUser = (ISPSelfCare.Login)
> pageContext.getAttribute("thisUser", PageContext.SESSION_SCOPE);
> if (thisUser == null){
> try {
> thisUser = (ISPSelfCare.Login)
> java.beans.Beans.instantiate(this.getClass().getClassLoader(),
> "ISPSelfCare.Login");
> } catch (ClassNotFoundException exc) {
> throw new InstantiationException(exc.getMessage());
> } catch (Exception exc) {
> throw new ServletException("Cannot create bean of class " +
> "ISPSelfCare.Login", exc);
> }
> pageContext.setAttribute("thisUser", thisUser,
> PageContext.SESSION_SCOPE);
> }
> }
> out.write("\n\n");
>
> String userid = request.getParameter( "userid" );
> String passwd = request.getParameter( "passwd" );
>
> // if( userid == null || passwd == null )
> // throw new RuntimeException( "Invalid arguments" );
>
>
> // if( userid.length() == 0 )
> // throw new RuntimeException( "Please provide your dial-up
> user id." );
>
> // if( passwd.length() == 0 )
> // throw new RuntimeException( "Please provide your dial-up
> password." );
>
> // <jsp:useBean id="thisUser" class="ISPSelfCare.Login"
> scope="session" />
> // <jsp:setProperty name="thisUser" property="custID" />
> // <jsp:setProperty name="thisUser" property="userID" />
> // <jsp:setProperty name="thisUser" property="login" />
>
> thisUser.login( userid, passwd );
> // thisUser.something();
>
> // thisUser.setUserID( userid );
> response.sendRedirect( "index.jsp" );
> out.write("\n");
> } catch (Throwable t) {
> out = _jspx_out;
> if (out != null && out.getBufferSize() != 0)
> out.clearBuffer();
> if (pageContext != null) pageContext.handlePageException(t);
> } finally {
> if (_jspxFactory != null)
> _jspxFactory.releasePageContext(pageContext);
> }
> }
> }
>
>
>
>
>
>
> On Mon, 2004-04-19 at 10:58, Thomas Chua wrote:
> > try looking for this file in your work directory....
> > login_jsp._jspService(login_jsp.java:74)
> >
> >
> >
> >
> >
> > "Adam Buglass" <[EMAIL PROTECTED]>
> > 04/19/2004 05:41 PM
> > Please respond to "Tomcat Users List"
> >
> >
> > To: "Tomcat Users List" <[EMAIL PROTECTED]>
> > cc:
> >
> > Subject: Mysterious Null Pointer Exception in Login
> script
> >
> >
> >
> > Hi, I hope this is the right list for this, it's been driving me up the
> > wall!
> >
> > First things first, I'm using tomcat servlet container 4.1 with Suns
> > J2SE 1.4.1
> >
> > The problem is I have a simple login procedure whereby a user enters
> > their id and password into a JSP which passes the information to a Java
> > Method. This method in turn checks the Database to see if the user is
> > valid. If the user is valid a new session is created and the information
> > stored in a bean.
> >
> > So far so good, I've used this method on several occassions with no
> > trouble.
> >
> > However when I attempt to login (with any set of data) I get a
> > NullPointerException at line 30 of the class file. Always the same
> > exception and always at line 30 no matter what I do. I can't find any
> > useful info from the logs or the exception that's thrown.
> >
> > Has anyone any thoughts on what may be causing this or pointers on how
> > to solve it?
> >
> > The offending page is at www.golduk.net/selfcare/index.jsp
> >
> > Thanks,
> > Adam Buglass
> >
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > For additional commands, e-mail: [EMAIL PROTECTED]
> >
> >
> >
>
>
>
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