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From Eddie Bush <ekb...@swbell.net>
Subject Re: Null Pointer Exception - would you please take a look?
Date Tue, 18 Jun 2002 19:27:25 GMT
I think I'm about to that point.  This is reeeeally starting to peeve me
off.

----- Original Message -----
From: "Markus Kirsten" <markus.kirsten@iped.vxu.se>
To: "Tomcat Users List" <tomcat-user@jakarta.apache.org>
Sent: Tuesday, June 18, 2002 2:27 PM
Subject: Re: Null Pointer Exception - would you please take a look?


> Hi Eddie,
> Have you tried accessing Tomcat directly and not going through Apache? I
> was having too much trouble using mod_webapp together with Apache and
> Tomcat due to that form-based authentication didn't work through Apache
> but it did directly with Tomcat.
>
> Maybe we should all use mod_jk instead. Is anybody running it on Mac OS
> X BTW?
>
>
> Markus
>
> On tisdag, juni 18, 2002, at 09:15 , Eddie Bush wrote:
>
> > Ok, I just bumped it down to a MemoryRealm and tried that - and it works
> > just fine.  What gives with the JDBCRealm?  I really need to get this
> > going!
> >
> > Thank you for your input!
> >
> > Eddie
> >
> > ----- Original Message -----
> > From: "Eddie Bush" <ekbush@swbell.net>
> > To: "Tomcat Users List" <tomcat-user@jakarta.apache.org>;
> > <augustd@codemagi.com>
> > Sent: Tuesday, June 18, 2002 1:57 PM
> > Subject: Re: Null Pointer Exception - would you please take a look?
> >
> >
> >> I'm getting really annoyed =)  It seems you people haven't actually
> >> read
> > my
> >> question thoroughly enough to actually understand what I'm doing.  The
> >> thought crosses my mind that you see the subject and then just scan and
> > put
> >> in some standard "Oh he's an idiot - he needs to do this" response.
> >> The
> >> problem is with a JDBCRealm!  I do NOTHING to send/receive anything
> > to/from
> >> the database.  I was of the understanding that Tomcat did this when I
> >> configured the realm and set up the security-constraint.
> >>
> >> While I believe my XML to be valid and correct, I will happily post it
> >> for
> >> inspection if someone thinks it would help.  Here is a sequence of what
> >> happens and the actors that are involved:
> >>
> >> Actors:  Me and Tomcat
> >>
> >> Me:  Enter url of page that is protected by a security constraint into
> >> my
> >> browsers address bar.  Press enter.
> >> Tomcat:  Returns to the client a page that looks like:
> >>
> >> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
> >> <HTML><HEAD>
> >> <META http-equiv=Content-Type content="text/html;
> >> charset=windows-1252"></HEAD>
> >> <BODY><PRE></PRE></BODY></HTML>
> >>
> >> (This is not what the actual page is - it's a JSP file - index.jsp -
> >> with
> >> much different content.  Also notice I'm not calling a servlet!  Even
> >> if I
> >> were, it wouldn't make a bit of difference at this point because Tomcat
> >> hasn't authenticated me!  This happens when Tomcat should authenticate
> > me -
> >> it is NOT my coding!!!)
> >>
> >> In my server log file, I have an error that starts off as:
> >>
> >> 2002-06-17 12:29:28
> > [org.apache.catalina.connector.warp.WarpRequestHandler]
> >> java.lang.NullPointerException
> >>     at interbase.interclient.PreparedStatement.setString(Unknown
> >> Source)
> >>     at org.apache.catalina.realm.JDBCRealm.credentials(JDBCRealm.java)
> >>     at org.apache.catalina.realm.JDBCRealm.authenticate(JDBCRealm.java)
> >>     at org.apache.catalina.realm.JDBCRealm.authenticate(JDBCRealm.java)
> >>
> >> My catalina.out has no indication of anything having gone awry - it
> >> merely
> >> has status messages indicating that the server was started (why isn't
> > there
> >> a timestamp in here?).
> >>
> >> Any ideas?  Thank you for having actually READ THE ENTIRE MESSAGE so
> >> you
> >> UNDERSTAND my problem before having issued a reply =)  Ack!  I'm sorry
> >> but
> >> I'm frustrated by the responses I am getting - makes me wanna just
> >> jump up
> >> and down and scream at the top of my lungs ... Please - I BEG of you -
> > clue
> >> me in here - any thoughts why this is happening?  Again, I can post my
> >> XML
> >> if you think I need to.
> >>
> >> A couple of questions people have asked up to this point, along with
> >> the
> >> answer:
> >>
> >> Q: Are you passing a null string?
> >> A: I get this when I try to visit a URL that falls under a security
> >> constraint.  It's a JDBCRealm.  Tomcat handles this - it is not my
> >> code.
> >>
> >> Q: Are you sure the fields in your table match what Tomcat is
> >> expecting?
> >> A: Initially they didn't.  My fields were of length 14 and Tomcat says
> > they
> >> should be 15 -- but they're varchar, so does that really matter?  I
> > rebuilt
> >> the tables so that anything Tomcat uses matches exactly what the docs
> > say -
> >> meaning I made my fields to be of length 15.  I still get the same
> >> response - exactly the same response.
> >>
> >> Is this the JDBCRealm?  I put my DB driver in common/lib - so Tomcat
> > SHOULD
> >> be able to find it - right?  Is this the appropriate spot?  Is it
> >> possible
> >> (and how possible?) that this is my driver?  I use this driver just
> >> fine
> >> doing JDBC stuff all the time - no problem.
> >>
> >> Thanks for your time!
> >>
> >> Eddie
> >>
> >> ----- Original Message -----
> >> From: "August Detlefsen" <augustd123@yahoo.com>
> >> To: "Tomcat Users List" <tomcat-user@jakarta.apache.org>
> >> Sent: Tuesday, June 18, 2002 1:24 PM
> >> Subject: Re: Null Pointer Exception - would you please take a look?
> >>
> >>
> >>> If you are trying to insert a NULL into a NOT NULL column (or are
> >>> trying to insert special chars or the String is too long), you should
> >>> get a SQLException, not a NullPointerException.
> >>>
> >>> You should recheck that you are actually getting a valid Connection
> >>
> >>
> >>
> >> --
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> >>
> >
> >
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