Interestingly - I edited out the source file in question so that it only
had about 15-20 lines.
It *still* claims that the exception is being thrown is at Line 30,
although line 30 doesn't exist anymore. I'm stumped! :-(
Adam
On Mon, 2004-04-19 at 11:29, Adam Buglass wrote:
> 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
> > >
> > >
> > > ---------------------------------------------------------------------
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> > > For additional commands, e-mail: [EMAIL PROTECTED]
> > >
> > >
> > >
> >
> >
> >
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> >
> >
> >
>
>
>
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