tomcat-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Eddie Bush <ekb...@swbell.net>
Subject Re: Null Pointer Exception - would you please take a look?
Date Tue, 18 Jun 2002 13:04:25 GMT
I'm not exactly sure what's going on.  It happens when I try to visit an
area of a site that has a security constraint.  My user authentication
database is in a RDBMS, and I use the JDBC realm to connect to it.  I'm
never supplied with a prompt to login.

----- Original Message -----
From: "John Gregg" <john.gregg@techarch.com>
To: "'Tomcat Users List'" <tomcat-user@jakarta.apache.org>
Sent: Monday, June 17, 2002 5:38 PM
Subject: RE: Null Pointer Exception - would you please take a look?


> 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
>
>
>
>
> --
> To unsubscribe, e-mail:
<mailto:tomcat-user-unsubscribe@jakarta.apache.org>
> For additional commands, e-mail:
<mailto:tomcat-user-help@jakarta.apache.org>
>


--
To unsubscribe, e-mail:   <mailto:tomcat-user-unsubscribe@jakarta.apache.org>
For additional commands, e-mail: <mailto:tomcat-user-help@jakarta.apache.org>


Mime
View raw message