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From "Martin O'Shea" <>
Subject Issue with logging in to Tomcat 6.0
Date Wed, 22 Sep 2010 13:27:57 GMT

I have a Java / Tomcat application which creates a cookie for a user when
they visit the homepage. This cookie is used to recognize that user on
subsequent visits and generate recent lists. These are working well and so
far without any type of authentication of the user using Tomcat itself.
Which brings me to my issue.

On certain pages of my application, users have the option to post comments
or save content created, and of course to maintain their profiles. So what
I'm trying to do is have users login on these pages so that the relevant
operation can be carried out, e.g. if posting a comment, the user must first
login from the current page which is not specifically intended as a login
page, rather it displays content created. Or to access a profile page, login
must have occurred. I can then record the login in a session variable.

But when I try to login to Tomcat, I am given message 'Invalid direct
reference to form login page' but do not quite see why. In my pages, I'm
using login code provided with Tomcat, i.e.:

    <div id = "login">

            <form method = "POST" action='<%=
response.encodeURL("j_security_check") %>' >

                <table border="0">


                        <th align = "right">Username</th>

                        <td align = "left"><input type="text"



                        <th align = "right">Password</th>

                        <td align = "left"><input type="password"



                        <td align = "right"><input type="submit" value="Log

                        <td align = "left"><input type="reset"></td>





I've also tried using a default login page with an HTML iframe but the same
message occurs. What I want is for the login to work from the current above,
authenticate the user, and then return the user to the page. 

Is anyone able to advise? Do I need to use realms in Tomcat or write my own
servlet to read the user table of the database?

I'm using Tomcat 6.X.


Mr Morgan.


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