Tomcat6 Custom Realm - java.lang.ClassNotFoundException

[Sean Galland]

Hello,

I am writing a custom authentication solution since our website uses a custom encryption/hashing process. I created and compiled the jar without errors, but when I put the jar inside tomcat6's lib directory (not the web apps lib directory) I get the following error: java.lang.ClassNotFoundException. I have done a lot of Google'ing/Stackoverflow'ing and searching Coderanch to no avail.

My realm is setup in server.xml as follows:

 <Realm className="com.sg.tomcat.MyRealm"
             debug="99"
             driverName="com.mysql.jdbc.Driver"
             connectionURL="jdbc:mysql://localhost:3306/time_management"
             connectionName="myname"
             connectionPassword="blah"
             userTable="creds"
             userNameCol="user"
             userCredCol="pwd"
             userRoleTable="user_roles"
             roleNameCol="rolename" />

This is the tutorial I used to come up with a test realm: Setup your own Tomcat security realm

Any assistance in getting the class loader to locate my custom realm jar would be appreciated.

[Sean Galland]

Here is the Apache Tomcat log:

java.lang.ClassNotFoundException: com.sg.tomcat.MyRealm
	at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
	at org.apache.tomcat.util.digester.ObjectCreateRule.begin(ObjectCreateRule.java:205)
	at org.apache.tomcat.util.digester.Rule.begin(Rule.java:153)
	at org.apache.tomcat.util.digester.Digester.startElement(Digester.java:1356)
	at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:501)
	at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:179)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:1343)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2756)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:647)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:511)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
	at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119)
	at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
	at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
	at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1642)
	at org.apache.catalina.startup.Catalina.load(Catalina.java:524)
	at org.apache.catalina.startup.Catalina.load(Catalina.java:562)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:261)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)

[Sean Galland]

I determined the problem - my jar file wasn't created correctly because the package folders were not created correctly. My bad.