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Struts & Hibernate
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| | | Help with Creating my own Realm extending RealmBase, ClassNotFoundException issu | Help with Creating my own Realm extending RealmBase, ClassNotFoundException issu 2006-11-14 - By Marcus Williford
Back
I have attempted to create my own Realm, as I need to do authentication via
a custom set of rules. I have attempted several things ( hours of
attempting this with no luck), and can't seem to get class loaded.
Tomcat5.5.20
Elcipse 3.2
1. I've put something like this in my server.xml
<Realm className="com.devmonkey.agent.TestRealm"/> I've also tried
className="TestRealm", etc....
2. I've compiled TestRealm into a jar, along with a
mbeans-descriptors.xmlfile. Placed this into the
CATALINA_HOME/server/lib as a .jar file. I have
tried every angle on the name, placement. I've put the class directly in
the CATALINA_HOME/server/classes. I've deleted the .class files on my
webapp/classes directory to make sure there is only a single copy.
3. TestRealm was extended from UserDatabaseRealm as a test "public class
TestRealm extends UserDatabaseRealm"
4. I also attempted to extend RealmBase, override the correct classes,
etc...
5. I get the following, no matter what I do!
Nov 14, 2006 2:56:13 AM org.apache.tomcat.util.digester.DigesterstartElement
SEVERE: Begin event threw exception
java.lang.ClassNotFoundException  : com.devmonkey.agent.TestRealm
at java.net.URLClassLoader $1.run(Unknown Source)
at java.security.AccessController (Native Method)
at java.net.URLClassLoader (Unknown Source)
at java.lang.ClassLoader (Unknown Source)
at java.lang.ClassLoader (Unknown Source)
at org.apache.tomcat.util.digester.ObjectCreateRule (
ObjectCreateRule.java:204)
at org.apache.tomcat.util.digester.Rule (Rule.java:152)
at org.apache.tomcat.util.digester.Digester (Digester.java
:1275)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser
(Unknown
Source)
at
com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser
.emptyElement(Unknown
Source)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl
.scanStartElement(Unknown
Source)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl
$FragmentContentDispatcher.dispatch(Unknown
Source)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl
.scanDocument(Unknown
Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration
(Unknown
Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration
(Unknown
Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser (Unknown
Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser
(Unknown
Source)
at org.apache.tomcat.util.digester.Digester (Digester.java:1561)
at org.apache.catalina.startup.Catalina (Catalina.java:489)
at org.apache.catalina.startup.Catalina (Catalina.java:523)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method (Unknown Source)
at org.apache.catalina.startup.Bootstrap (Bootstrap.java:266)
at org.apache.catalina.startup.Bootstrap (Bootstrap.java:431)
Nov 14, 2006 2:56:13 AM org.apache.catalina.startup.Catalina load
WARNING: Catalina.start using conf/server.xml:
java.lang.ClassNotFoundException : com.devmonkey.agent.TestRealm
at org.apache.tomcat.util.digester.Digester (
Digester.java:2725)
at org.apache.tomcat.util.digester.Digester (
Digester.java:2751)
at org.apache.tomcat.util.digester.Digester (Digester.java
:1278)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser
(Unknown
Source)
at
com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser
.emptyElement(Unknown
Source)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl
.scanStartElement(Unknown
Source)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl
$FragmentContentDispatcher.dispatch(Unknown
Source)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl
.scanDocument(Unknown
Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration
(Unknown
Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration
(Unknown
Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser (Unknown
Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser
(Unknown
Source)
at org.apache.tomcat.util.digester.Digester (Digester.java:1561)
at org.apache.catalina.startup.Catalina (Catalina.java:489)
at org.apache.catalina.startup.Catalina (Catalina.java:523)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method (Unknown Source)
at org.apache.catalina.startup.Bootstrap (Bootstrap.java:266)
at org.apache.catalina.startup.Bootstrap (Bootstrap.java:431)
Nov 14, 2006 2:56:13 AM org.apache.tomcat.util.digester.DigesterstartElement
SEVERE: Begin event threw exception
java.lang.ClassNotFoundException : com.devmonkey.agent.TestRealm
at java.net.URLClassLoader $1.run(Unknown Source)
at java.security.AccessController (Native Method)
at java.net.URLClassLoader (Unknown Source)
at java.lang.ClassLoader (Unknown Source)
at java.lang.ClassLoader (Unknown Source)
at org.apache.tomcat.util.digester.ObjectCreateRule (
ObjectCreateRule.java:204)
at org.apache.tomcat.util.digester.Rule (Rule.java:152)
at org.apache.tomcat.util.digester.Digester (Digester.java
:1275)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser
(Unknown
Source)
at
com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser
.emptyElement(Unknown
Source)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl
.scanStartElement(Unknown
Source)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl
$FragmentContentDispatcher.dispatch(Unknown
Source)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl
.scanDocument(Unknown
Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration
(Unknown
Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration
(Unknown
Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser (Unknown
Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser
(Unknown
Source)
at org.apache.tomcat.util.digester.Digester (Digester.java:1561)
at org.apache.catalina.startup.Catalina (Catalina.java:489)
at org.apache.catalina.startup.Catalina (Catalina.java:543)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method (Unknown Source)
at org.apache.catalina.startup.Bootstrap (Bootstrap.java:294)
at org.apache.catalina.startup.Bootstrap (Bootstrap.java:432)
Nov 14, 2006 2:56:13 AM org.apache.catalina.startup.Catalina load
WARNING: Catalina.start using conf/server.xml:
java.lang.ClassNotFoundException : com.devmonkey.agent.TestRealm
at org.apache.tomcat.util.digester.Digester (
Digester.java:2725)
at org.apache.tomcat.util.digester.Digester (
Digester.java:2751)
at org.apache.tomcat.util.digester.Digester (Digester.java
:1278)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser
(Unknown
Source)
at
com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser
.emptyElement(Unknown
Source)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl
.scanStartElement(Unknown
Source)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl
$FragmentContentDispatcher.dispatch(Unknown
Source)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl
.scanDocument(Unknown
Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration
(Unknown
Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration
(Unknown
Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser (Unknown
Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser
(Unknown
Source)
at org.apache.tomcat.util.digester.Digester (Digester.java:1561)
at org.apache.catalina.startup.Catalina (Catalina.java:489)
at org.apache.catalina.startup.Catalina (Catalina.java:543)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method (Unknown Source)
at org.apache.catalina.startup.Bootstrap (Bootstrap.java:294)
at org.apache.catalina.startup.Bootstrap (Bootstrap.java:432)
Nov 14, 2006 2:56:13 AM org.apache.catalina.startup.Catalina start
INFO: Server startup in 0 ms
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method (Unknown Source)
at org.apache.catalina.startup.Bootstrap (Bootstrap.java:294)
at org.apache.catalina.startup.Bootstrap (Bootstrap.java:432)
Caused by: java.lang.NullPointerException
at org.apache.catalina.startup.Catalina (Catalina.java:615)
at org.apache.catalina.startup.Catalina (Catalina.java:575)
... 6 more
6. I am starting to suspect that
java.security.AccessController has something to do with it, as
I don't know if it is in the classpath for tomcat, but I'm not sure how I
can troubleshoot this further.
Please assist!
mw
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