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Lately I've been working on implementing security for my web application, running on a Glassfish v3. I successfully managed to secure some resources by setting a basic authentication up like following:
<login-config>
<auth-method>BASIC</auth-method>
<realm-name>vcards-admin</realm-name>
</login-config>
Now I was wondering how to get the user name introduced on the login prompt to fecth the actual data of the user. I thought there could be a session attribute to get that piece of data, but I don't know which one it is.
Am I wrong about the session attribute? Is there any other way to access that login information?
Thanks in advance.
812
1) First create data at the server side and pass it to a JSP. Here a list of student objects in a servlet will be created and pass it to a JSP using setAttribute(). 2) Next, the JSP will retrieve the sent data using getAttribute(). 3) Finally, the JSP will display the data retrieved, in a tabular form.
ArrayList lst = new ArrayList(); lst. add("test1"); lst. add("test2"); session. setAttribute("list", lst);
getAttribute() is for server-side usage only - you fill the request with attributes that you can use within the same request. For example - you set an attribute in a servlet, and read it from a JSP. Can be used for any object, not just string.
It's available by HttpServletRequest#getUserPrincipal() or its shorthand HttpServletRequest#getRemoteUser():
String name = request.getUserPrincipal().getName();
// Or
String name = request.getRemoteUser();
Equivalently in JSP EL:
${pageContext.request.userPrincipal.name}
<!-- or -->
${pageContext.request.remoteUser}
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