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From "Carl" <c...@etrak-plus.com>
Subject Re: JNDI lookup returns NamingException
Date Wed, 16 Feb 2005 13:02:23 GMT
Many thanks to Doug and Seven.

The core problem on our Windows machines was that we neglected to put a
<Resource-Link> entry in the ROOT.xml in the Documents and Settings\.....
directory.

On the Linux servers (running 5.5), we needed to put a <Resource-Link> entry
in the Context.xml under META-INF.

And, to think we worked for several hours on such a simple problem.

Thanks again,

Carl
----- Original Message -----
From: "Parsons Technical Services" <parsonstechnical@earthlink.net>
To: "Tomcat Users List" <tomcat-user@jakarta.apache.org>
Sent: Tuesday, February 15, 2005 11:16 PM
Subject: Re: JNDI lookup returns NamingException


> Did you put ResourceLinks in your Default context or the Apps context?
>
> If not, you will not be able to see the resource.
>
>
http://jakarta.apache.org/tomcat/tomcat-5.0-doc/config/globalresources.html
>
> And the link that is in your server.xml shouldn't be there or anywhere.
See
> above link.
>
> Doug
>
>
> ----- Original Message -----
> From: "Carl" <carl@etrak-plus.com>
> To: "Tomcat User Group" <tomcat-user@jakarta.apache.org>
> Sent: Tuesday, February 15, 2005 4:41 PM
> Subject: JNDI lookup returns NamingException
>
>
> > For various reasons, I need to put a Hashtable as a resource in the
Tomcat
> > Context.  I have modified the server.xml as follows (note the resource
> > entry
> > of "DBHashtable"):
> >
> > <Server port="8005" shutdown="SHUTDOWN" debug="0">
> > <Listener className="org.apache.catalina.mbeans.ServerLifecycleListener"
> > debug="0"/>
> > <Listener
> > className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"
> > debug="0"/>
> >
> > <!-- Global JNDI resources -->
> > <GlobalNamingResources>
> >
> > <!-- Test entry for demonstration purposes -->
> > <Environment name="simpleValue" type="java.lang.Integer" value="30"/>
> >
> > <!-- Editable user database that can also be used by
> > UserDatabaseRealm to authenticate users -->
> > <Resource name="UserDatabase" auth="Container"
> > type="org.apache.catalina.UserDatabase"
> > description="User database that can be updated and saved">
> > </Resource>
> > <Resource name="DBHashtable" auth="Container"
type="java.util.Hashtable"/>
> > <ResourceParams name="UserDatabase">
> > <parameter>
> > <name>factory</name>
> > <value>org.apache.catalina.users.MemoryUserDatabaseFactory</value>
> > </parameter>
> > <parameter>
> > <name>pathname</name>
> > <value>conf/tomcat-users.xml</value>
> > </parameter>
> > </ResourceParams>
> > <ResourceParams name="DBHashtable">
> > <parameter>
> > <name>factory</name>
> > <value>com.tsr.factory.HashtableFactory</value>
> > </parameter>
> > </ResourceParams>
> >
> > </GlobalNamingResources>
> >
> > <ResourceLink name="linkToGlobal" global="simpleValue"
> > type="java.lang.Integer"/>
> >
> > <!-- Define the Tomcat Stand-Alone Service -->
> > <Service name="Catalina">
> >
> > <!-- Define a non-SSL Coyote HTTP/1.1 Connector on the port specified
> > during installation -->
> > <Connector
> > port="8080" maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
> > enableLookups="false" redirectPort="8443" acceptCount="100"
> > debug="0" connectionTimeout="20000"
> > disableUploadTimeout="true" />
> > <Connector port="8009"
> > enableLookups="false" redirectPort="8443" debug="0"
> > protocol="AJP/1.3" />
> > <!-- Define the top level container in our container hierarchy -->
> > <Engine name="Catalina" defaultHost="localhost" debug="0">
> >
> > <!-- Global logger unless overridden at lower levels -->
> > <Logger className="org.apache.catalina.logger.FileLogger"
> > prefix="catalina_log." suffix=".txt"
> > timestamp="true"/>
> >
> > <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
> > debug="0" resourceName="UserDatabase"/>
> >
> > <Host name="localhost" debug="0" appBase="webapps"
> > unpackWARs="true" autoDeploy="true"
> > xmlValidation="false" xmlNamespaceAware="false">
> >
> > <Logger className="org.apache.catalina.logger.FileLogger"
> > directory="logs" prefix="localhost_log." suffix=".txt"
> > timestamp="true"/>
> >
> > </Host>
> >
> > </Engine>
> >
> > </Service>
> >
> > </Server>
> >
> >
> > My application accesses this resource (well, tries to) using the
following
> > code:
> >
> > try {
> > Context ctx = new InitialContext();
> > if(ctx == null ){
> > System.out.println("Boom - No Context");
> > throw new NamingException("No Context - No DataBase Exists");
> > }
> >
> > Context envCtx = (Context)ctx.lookup("java:comp/env");
> > Object ud = (Object)envCtx.lookup("DBHashtable");
> > }catch (NamingException ne){
> > ne.printStackTrace();
> > // throw new SQLException("Datasource Not Found");
> > }
> >
> > It fails of the line "Object ud = (Object)envCtx.lookup("DBHashtable");"
> > with the following error:
> >
> > javax.naming.NamingException: Cannot create resource instance
> > at
> >
org.apache.naming.factory.ResourceEnvFactory.getObjectInstance(ResourceEnvFa
> > ctory.java:99)
> > at
> > javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:301)
> > at org.apache.naming.NamingContext.lookup(NamingContext.java:791)
> > at org.apache.naming.NamingContext.lookup(NamingContext.java:151)
> > at LoginServlet.doPost(LoginServlet.java:37)
> > at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
> > at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> > at
> >
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
> > FilterChain.java:237)
> > at
> >
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
> > ain.java:157)
> > at com.tsr.filters.RequestFilter.doFilter(RequestFilter.java:78)
> > at
> >
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
> > FilterChain.java:186)
> > at
> >
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
> > ain.java:157)
> > at
> >
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
> > va:214)
> > at
> >
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContex
> > t.java:104)
> > at
> >
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
> > at
> >
org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContext
> > Valve.java:198)
> > at
> >
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
> > va:152)
> > at
> >
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContex
> > t.java:104)
> > at
> >
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
> > at
> >
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137
> > )
> > at
> >
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContex
> > t.java:104)
> > at
> >
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117
> > )
> > at
> >
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContex
> > t.java:102)
> > at
> >
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
> > at
> >
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
> > :109)
> > at
> >
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContex
> > t.java:104)
> > at
> >
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
> > at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
> > at
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
> > at
> >
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
> > at
> >
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConne
> > ction(Http11Protocol.java:705)
> > at
> >
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
> > at
> >
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav
> > a:683)
> > at java.lang.Thread.run(Thread.java:534)
> >
> >
> > I know the factory is OK because I put a println in it and it seems to
> > work
> > (it only creates a Hashtable.)
> >
> > Does anyone have an idea of what I have done wrong?
> >
> > Thanks,
> >
> > Carl Kabbe
> >
> >
> >
> >
> > --
> > No virus found in this outgoing message.
> > Checked by AVG Anti-Virus.
> > Version: 7.0.300 / Virus Database: 265.8.8 - Release Date: 2/14/2005
> >
> >
> > ---------------------------------------------------------------------
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> >
> >
> >
>
>
>
> ---------------------------------------------------------------------
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>
>
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Anti-Virus.
> Version: 7.0.300 / Virus Database: 265.8.8 - Release Date: 2/14/2005
>
>



-- 
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.300 / Virus Database: 265.8.8 - Release Date: 2/14/2005


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