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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 13:07:09 GMT
Alas, I do not have code to the JDBCRealm =(

I figured that this would be a cut-and-dried problem -- either the JDBCRealm
implementation or perhaps my driver behaving poorly.  In either case, I
figured someone would be able to tell right off my my description, but
perhaps I described the circumstance poorly.

It happens when I visit a page that has a security constraint.  I'm never
offered a login dialog.  I'm using BASIC authentication - no SSL --
transport-guarantee is NONE.  I'm just trying to get the BASIC auth down and
then move on to configuring SSL and doing it properly via form-based login.

Thanks!

----- Original Message -----
From: "August Detlefsen" <augustd123@yahoo.com>
To: "Tomcat Users List" <tomcat-user@jakarta.apache.org>;
<john.gregg@techarch.com>
Sent: Monday, June 17, 2002 6:14 PM
Subject: RE: Null Pointer Exception - would you please take a look?


> Are you sure you are actually getting a Connection?
> Are you sure that your PreparedStatement itself is not null?
>
> Can you post the offending code?
>
>
>
> --- John Gregg <john.gregg@techarch.com> wrote:
> > Is the String you're setting null?  I can't say how your driver
> > handles that
> > case, but maybe it doesn't like it.  The jdk javadocs don't mention
> > it.  Is
> > the String too big for the column, does it have weird characters in
> > it?  If
> > you can turn on debugging for the driver, try that.  If you have the
> > source,
> > recompile with debugging on and run in a debugger.  If you're
> > desperate
> > enough, decompile the bytecode, recompile with debugging on, and run
> > it in
> > the debugger.  You didn't hear it from me.
> >
> > john
> >
> >
> > -----Original Message-----
> > From:
> > tomcat-user-return-22966-john.gregg=techarch.com@jakarta.apache.org
> >
> [mailto:tomcat-user-return-22966-john.gregg=techarch.com@jakarta.apache.
> > org]On Behalf Of Eddie Bush
> > Sent: Monday, June 17, 2002 5:18 PM
> > To: Tomcat Users Mailing List
> > Subject: Null Pointer Exception - would you please take a look?
> >
> >
> > I'm running Tomcat 4.0.1, InterBase 6 Super Server, and Apache
> > 1.3.22.
> >
> > Everything works super, until I throw in a JDBC realm and try to
> > connect to
> > an application protected by a security constraint.  When I do, I get
> > the
> > following exception in my server log:
> >
> > 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)
> >
> > ... and it continues.  I hate to paste it all unless it's necessary
> > to do
> > so.
> >
> > My thought was that someone may have experienced this - or that it
> > may be a
> > known issue.  I checked the docs to ensure that my driver implements
> > PreparedStatement and setString() ... and it does.  It's a JDBC 1.0
> > driver
> > though.
> >
> > What would be the recommended course of action?  I'm not sure what's
> > going
> > on here for certain, and that's why I'm posting.
> >
> > Thanks in Advance!
> >
> > Eddie
> >
> >
> >
> >
> > --
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> >
>
>
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