Hi,
we are developing an application, where we experience an interesting UTF-8
related behaviour.
For the development the team mostly uses Tomcat, since the deployment is much
faster and nicer. All tests are repeated on WebSphere, because that is what our
customer runs.
We are running a Tomcat environment
Tomcat 6.0.16
Java 1.6 - 6
Struts 1.2.9
RHEL 4 and Windows XP / SP2
and a WebSphere environment
WebSphere 6.0.2.17
Java 1.4 (shipped with WS)
Struts 1.2.9
RHEL 4
There is a login action and an action where the user can change his password.
Both forms use the "post"-method. Content of both HTML-pages is declared as
UTF-8. We use an encoding filter (Tomcat only) as described in:
http://wiki.apache.org/tomcat/Tomcat/UTF-8
Funny thing is:
One of the servlets (login) works as expected.
Username and password are in proper UTF-8 encoding.
The other servlet does not receive proper UTF-8.
This way the password-hashes are corrupted if the user types in non-ANSI chars
(i.e. every char that needs multibyte encoding in UTF-8). The user then cannot
log into the application.
In both cases the filter code is executed, we verified that with a debugger.
Tracing the client-server communication with WireShark shows that the
Web-Browser sends identical password data as a result of both forms.
In the request object on the other hand the strings differ if a special
character was entered. We checked that with a debugger by setting a breakpoint
in the encoding filter.
We added URIEncoding="UTF-8" in the connector, as suggested in various posts we
found googling the problem... unfortunately to no avail.
If I'm not totally mistaken there is no application code run before the filter,
so either we are making a mistake that has slipped us (quite possible) or we
might have found a rare bug in Tomcat.
On WebSphere the same code works without a problem.
I would appreciate any kind of hint, since developing on Tomcat is much more
fun than on WebSphere.
Thanks for your help in advance and with kind regards,
Christoph.
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