ClassCastException: weblogic.security.acl.internal.FileRealm

Question

Hi,
I am trying to create new user through the CachingRealm.newUser(?,?,?) method..What
I do is -
weblogic.security.acl.BasicRealm baseRealm =
(weblogic.security.acl.BasicRealm)weblogic.security.acl.Security.getRealm();
weblogic.security.acl.CachingRealm realm = (weblogic.security.acl.CachingRealm)
baseRealm;
However it is not able to classcast to CachingRealm , it gives the exception -
java.lang.ClassCastException: weblogic.security.acl.internal.FileRealm..
Do I need to do anything else ?
Thx

Answer 1

Hi Kumar,
I took a look at config.xml
Looks like you do not have an alternate realm hooked into WebLogic and that is the
source of the problem.
If you try to cast anything to CachingRealm and call methods on it, when you don't have
an alternate realm, then the cast will fail with ClassCastException.
For example, take a look at the very, very simple JSP code
<%@ page import="
import java.util.*,
import weblogic.common.*,
import javax.servlet.*,
import javax.servlet.http.*,
import java.io.*,
import weblogic.security.*,
import weblogic.security.acl.User,
import weblogic.security.acl.Security,
import weblogic.security.acl.Realm,
import weblogic.security.acl.CachingRealm,
import weblogic.security.acl.*,
import java.security.acl.*,
import java.security.acl.Permission,
import java.security.Principal,
import javax.servlet.http.*,
import weblogic.html.*,
import weblogic.common.internal.WLColor
"%>
<%
response.setContentType("text/html");
BasicRealm basicRealm = Security.getRealm();
try {
((CachingRealm) basicRealm).clearCaches();
} catch (ClassCastException ce) {
out.println("There is a class cast.. getRealm ain't no returned a
CachingRealm");
out.println("This probably means that you don't have a pluggable realm hooked
into WebLogic.");
out.println("No pluggable Realm = no Cachingrealm!");
%>
This JSP will give you a class cast if you do not have some alternate realm hooked up
(LDAP, NTREalm, UnixRealm, RDBMSRealm)
But will work just fine if you do have an alternate realm hooked up .
I think that this is what you are seeing.
Hope this helps
Joe Jerry
kumar wrote:
Hi Jerry,
Thanks for your response.
I have attached my config.xml . It is a very small config.xml with all the default
configurations. Please look at it ..
Thx
Jerry <[email protected]> wrote:
Hi Kumar,
Do you have an alternate realm hooked into WebLogic (LDAP, UNIXrealm,
NTRealm,
CustomRealm)?
Thanks,
Joe Jerry
kumar wrote:
Hi,
I am trying to create new user through the CachingRealm.newUser(?,?,?)method..What
I do is -
weblogic.security.acl.BasicRealm baseRealm =
(weblogic.security.acl.BasicRealm)weblogic.security.acl.Security.getRealm();
weblogic.security.acl.CachingRealm realm = (weblogic.security.acl.CachingRealm)
baseRealm;
However it is not able to classcast to CachingRealm , it gives theexception -
java.lang.ClassCastException: weblogic.security.acl.internal.FileRealm..
Do I need to do anything else ?
Thx
Name: config.xml
config.xml Type: XML Document (text/xml)
Encoding: base64