JSP Client
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The CAS JSP tag library conforms toits TLD. The binary release can be downloaded from thedownloads section.
Example:
Here‘s an example of using the CAS JSP Taglib.
<%-- This is a sample JSP page that uses the CAS tag library. It assumes
that the tag library from
http://www.yale.edu/tp/cas/cas-taglib-1.00.tar.gz
is installed into your web application.
For the CAS 1.0 client (which works under JSP 1.1), this involves the
following steps:
- addition of castools.tld to your application‘s WEB-INF directory
- addition of castools.jar to your application‘s WEB-INF/lib directory
- modification of your application‘s deployment descriptor (web.xml)
to add an element like this:
http://www.yale.edu/its/tp/castools/WEB-INF/castools.tld
To use the CAS 2.0 client, simply refer to the sample application
(‘webProxy‘) that comes with the CAS 2.0 distribution.
--%>
<%-- The following like imports the tag library into the current page
and associates it with the prefix ‘cas‘ --%>
<%@ taglib prefix="cas" uri="/WEB-INF/castools.tld" %>
<%-- The following tag (JSP action) authenticates the user via CAS and
exposes the NetID of this user in the session-scoped variable
named ‘netid‘. If this session-scoped variable already exists,
the tag assumes the user has authenticated previously, and it does
not re-authenticate the user.
--%>
<%--
Now, scripting code may use the scripting variable named ‘netid‘,
and other code (such as a servlet sharing a session with this page)
may refer to the session-scoped attribute named ‘netid‘, as in
myHttpServletRequest.getSession().getAttribute("netid")
--%>
<%--
After authenticating the user, we might forward to a servlet
in our application; this servlet can read the session-scoped
parameter, as described earlier. (It would not be secure
to pass the NetID to the servlet as a request parameter; the servlet
should use the session-scoped attribute exposed by the CAS
tag.)
--%>
Example:
Here‘s an example of using the CAS JSP Taglib.
<%-- This is a sample JSP page that uses the CAS tag library. It assumes
that the tag library from
http://www.yale.edu/tp/cas/cas-taglib-1.00.tar.gz
is installed into your web application.
For the CAS 1.0 client (which works under JSP 1.1), this involves the
following steps:
- addition of castools.tld to your application‘s WEB-INF directory
- addition of castools.jar to your application‘s WEB-INF/lib directory
- modification of your application‘s deployment descriptor (web.xml)
to add an element like this:
http://www.yale.edu/its/tp/castools/WEB-INF/castools.tld
To use the CAS 2.0 client, simply refer to the sample application
(‘webProxy‘) that comes with the CAS 2.0 distribution.
--%>
<%-- The following like imports the tag library into the current page
and associates it with the prefix ‘cas‘ --%>
<%@ taglib prefix="cas" uri="/WEB-INF/castools.tld" %>
<%-- The following tag (JSP action) authenticates the user via CAS and
exposes the NetID of this user in the session-scoped variable
named ‘netid‘. If this session-scoped variable already exists,
the tag assumes the user has authenticated previously, and it does
not re-authenticate the user.
--%>
<%--
Now, scripting code may use the scripting variable named ‘netid‘,
and other code (such as a servlet sharing a session with this page)
may refer to the session-scoped attribute named ‘netid‘, as in
myHttpServletRequest.getSession().getAttribute("netid")
--%>
<%--
After authenticating the user, we might forward to a servlet
in our application; this servlet can read the session-scoped
parameter, as described earlier. (It would not be secure
to pass the NetID to the servlet as a request parameter; the servlet
should use the session-scoped attribute exposed by the CAS
tag.)
--%>
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