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From Martin Gainty <mgai...@hotmail.com>
Subject RE: Problem with JNDI environment entry resources
Date Wed, 03 Sep 2008 14:09:25 GMT

i havent used JNDI to obtain string values<BR>
i use ResourceBundle to obtain the locale specific string value e.g. myResources.getString("CancelKey");<BR>
http://java.sun.com/j2se/1.4.2/docs/api/java/util/ResourceBundle.html<BR>

anyone<BR>
Martin<BR> 
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> Date: Wed, 3 Sep 2008 14:42:24 +0100
> From: sip.sniffa@gmail.com
> To: users@tomcat.apache.org
> Subject: Re: Problem with JNDI environment entry resources
> 
> Martin,
> 
> Thanks for the suggestion, though I think there may have been some
> misunderstanding. I'm attempting to access a simple java.lang.String,
> not a DataSource. <Environment/> elements are used to place String
> resources in an application's environment, not <Resource/> elements,
> AFAIK.
> 
> Paul.
> 
> 2008/9/3 Martin Gainty <mgainty@hotmail.com>:
> >
> > http://tomcat.apache.org/tomcat-5.5-doc/jndi-datasource-examples-howto.html<BR>
> > /WEB-INF/web.xml contents which contain a jndi reference <BR><web-app xmlns="http://java.sun.com/xml/ns/j2ee"<BR>
> >    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"<BR>
> >    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee<BR>
> > http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"<BR>
> >    version="2.4"><BR>
> >  <description>MySQL Test App</description><BR>
> >  <resource-ref><BR>
> >      <description>DB Connection</description><BR>
> >      <res-ref-name>teststring</res-ref-name><BR>
> >      <res-type>javax.sql.DataSource</res-type><BR>
> >      <res-auth>Container</res-auth><BR>
> >  </resource-ref><BR>
> > </web-app><BR>
> >
> > the lookup to teststring will get you a connection to the DB<BR>
> >
> > HTH<BR>
> > Martin<BR>
> > ______________________________________________
> > Disclaimer and confidentiality note
> > Everything in this e-mail and any attachments relates to the official business of
Sender. This transmission is of a confidential nature and Sender does not endorse distribution
to any party other than intended recipient. Sender does not necessarily endorse content contained
within this transmission.
> >
> >
> >> Date: Wed, 3 Sep 2008 01:01:40 +0100
> >> From: sip.sniffa@gmail.com
> >> To: users@tomcat.apache.org
> >> Subject: Problem with JNDI environment entry resources
> >>
> >> Tomcat 6.0.18
> >> java version "1.6.0_06" (sun-java6-jdk on Ubuntu 8.04 i386)
> >>
> >> I'm attempting to create environment entry resources, of type
> >> java.lang.String, within conf/server.xml and access them from web
> >> applications using JNDI. I've created a bare-bones test web app,
> >> jndistring, with the following conf/server.xml configuration:
> >>
> >> server.xml (snipped):
> >> -----------------------------
> >>       <Host name="localhost"
> >>             appBase="webapps"
> >>             unpackWARs="true"
> >>             autoDeploy="false"
> >>             deployOnStarup="true"
> >>             xmlValidation="false"
> >>             xmlNamespaceAware="false">
> >>
> >>             <Context docBase="jndistring.war"
> >>                     path="jndistring"
> >>                     useNaming="true">
> >>
> >>                 <Environment name="teststring"
> >>                     value="a test value"
> >>                     type="java.lang.String"
> >>                     override="false"
> >>                 />
> >>             </Context>
> >>
> >>       </Host>
> >>
> >> For the purpose of this test I've used jsp to access the value of teststring.
> >>
> >> jndistring.jsp (snipped):
> >> --------------------------------
> >> <%
> >> Context initCtx = new InitialContext();
> >> Context envCtx = (Context) initCtx.lookup("java:comp/env");
> >>
> >> String teststring = (String) envCtx.lookup("teststring");
> >> out.println("teststring: " + teststring);
> >> %>
> >>
> >> Accessing this page throws an exception:
> >> org.apache.jasper.JasperException: An exception occurred processing
> >> JSP page /test.jsp at line 18
> >> 15: Context initCtx = new InitialContext();
> >> 16: Context envCtx = (Context) initCtx.lookup("java:comp/env");
> >> 17:
> >> 18: String teststring = (String) envCtx.lookup("teststring");
> >> 19: out.println("teststring: " + teststring);
> >> 20: %>
> >>
> >> The top frame of the root cause is shown as:
> >> javax.servlet.ServletException: javax.naming.NameNotFoundException:
> >> Name teststring is not bound in this Context
> >>
> >> If I attempt to create an environment entry resource using
> >> <env-entry/> (and sub-elements) within web.xml, then the resource is
> >> created and I can access it!!!
> >>
> >> I've read the "JNDI resources howto", docs regarding the <Host/>,
> >> <Context/> and <Environment/> elements (and others), but don't see
> >> that I have missed anything.
> >>
> >> Can anyone suggest what I might have missed? Has anyone else had
> >> similar problems?
> >>
> >> Thanks,
> >>
> >> Paul.
> >>
> >> ---------------------------------------------------------------------
> >> To start a new topic, e-mail: users@tomcat.apache.org
> >> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> >> For additional commands, e-mail: users-help@tomcat.apache.org
> >>
> >
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