Spring Security max-sessions="1" url configuration

[pokarjm]

I have set my applicationContext-security.xml like below,

<security:http auto-config="false" use-expressions="true">

<security:form-login login-page="/jsp/index.jsp"
default-target-url="/jsp/home.jsp"
authentication-failure-url="/jsp/index.jsp?login_error=1" />

<security:intercept-url pattern="/jsp/home.jsp"
access="isAuthenticated()" />

<security:intercept-url pattern="/jsp/*.jsp"
access="permitAll" />


<security:logout logout-url="/j_spring_security_logout"
invalidate-session="true" />


<security:session-management>
<security:concurrency-control max-sessions="1" error-if-maximum-exceeded="true" />
</security:session-management>

</security:http>


Here I want only one session for the user should be present that is why i have wrote max-sessions="1".

It is working as needed, but the problem is when the user goes beyond 1 session, it redirects to
authentication-failure-url="/jsp/index.jsp?login_error=1"

also, when user enters invalid credentials at that time also it enters in same url ie.
authentication-failure-url="/jsp/index.jsp?login_error=1"

So, how should I display a message to user that Cannot login because of what reason as both failure points to same url.

I tried setting,
<security:session-management invalid-session-url="/abc.html" session-authentication-error-url="/def.html">
<security:concurrency-control max-sessions="1" error-if-maximum-exceeded="true" expired-url="/xyz.html"/>
</security:session-management>


but none of them is working on max-session reached and it redirects to
authentication-failure-url="/jsp/index.jsp?login_error=1".


how to separate url for two different problems.

Please tell me if I my question is wrong or I am making any mistake.

Thanks.