when i click on java:/comp
<http://localhost:8080/ClientDAOTest/newjsp.jsp?path=java:/comp> it gave
error
Error: Cannot create resource instance
javax.naming.NamingException: Cannot create resource instance
at org.apache.naming.factory.TransactionFactory.getObjectInstance(TransactionFactory.java:113)
at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)
at org.apache.naming.NamingContext.lookup(NamingContext.java:793)
at org.apache.naming.NamingContext.lookup(NamingContext.java:140)
at org.apache.naming.NamingContextBindingsEnumeration.nextElementInternal(NamingContextBindingsEnumeration.java:113)
at org.apache.naming.NamingContextBindingsEnumeration.next(NamingContextBindingsEnumeration.java:71)
at org.apache.jsp.newjsp_jsp._jspService(newjsp_jsp.java:106)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:662)
When I click onjdbc <http://localhost:8080/ClientDAOTest/newjsp.jsp?path=java:comp/env/jdbc>
it give error
Error: Name jdbc is not bound in this Context
javax.naming.NameNotFoundException: Name jdbc is not
bound in this Context
at org.apache.naming.NamingContext.lookup(NamingContext.java:770)
at org.apache.naming.NamingContext.lookup(NamingContext.java:153)
at
org.apache.naming.factory.ResourceLinkFactory.getObjectInstance(ResourceLinkFactory.java:97)
at
javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)
at org.apache.naming.NamingContext.lookup(NamingContext.java:793)
at org.apache.naming.NamingContext.lookup(NamingContext.java:140)
at
org.apache.naming.NamingContextBindingsEnumeration.nextElementInternal(NamingContextBindingsEnumeration.java:113)
at
org.apache.naming.NamingContextBindingsEnumeration.next(NamingContextBindingsEnumeration.java:71)
at org.apache.jsp.newjsp_jsp._jspService(newjsp_jsp.java:106)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:662)
On 9/8/2011 5:11 PM, Christopher Schultz wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Anjib,
>
> On 9/8/2011 4:51 PM, Anjib Mulepati wrote:
>> DataSource ds = null; try { 40. Context initCtx = new
>> InitialContext(); 41. Context envCtx = (Context)
>> initCtx.lookup("java:comp/env"); 42. ds = (DataSource)
>> envCtx.lookup("jdbc/dynic");
> Odd to use a local variable for this, but I guess you could do that.
>
> I've seen "java:comp/env" and "java:/comp/env", but both seem to work.
>
> Try running this JSP. It's a bit fragile, but it should get the job done.
>
> - -chris
>
> <?xml version="1.0" encoding="UTF-8" ?>
> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
> <%@page pageEncoding="UTF-8"
> session="false"
> language="Java"
> import="
> javax.naming.InitialContext,
> javax.naming.Binding,
> javax.naming.Context,
> javax.naming.NamingEnumeration,
> javax.naming.NamingException
> "
> %>
> <%
> String path = "java:/comp/env";
>
> String pathParam = request.getParameter("path");
> if(null != pathParam&& !"".equals(pathParam.trim()))
> path = pathParam.trim();
>
> int pos = path.lastIndexOf('/');
> String parent = pos> 0 ? path.substring(0, pos) : "java:comp/env";
> %>
> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
> <head>
> <title>JNDI Browser:<%= path %></title>
> </head>
> <body>
> <h1>JNDI Browser:<%= path %></h1>
>
> <p><a href="?path=<%= parent %>"><%= parent %></a></p>
> <%
> InitialContext ctx = null;
> NamingEnumeration e = null;
> try
> {
> ctx = new InitialContext();
> e = ctx.listBindings(path);
>
> if(e.hasMoreElements())
> {
> %>
> <ul>
> <%
> while(e.hasMoreElements())
> {
> Binding b = (Binding)e.next();
> %>
> <li>
> <%
> if(b.getObject() instanceof Context)
> {
> %>
> <a href="?path=<%= path %>/<%= b.getName() %>"><%=
> b.getName() %></a>
> <%
> }
> else
> {
> %>
> <%= b.getName() %> (<%= b.getClassName() %>)
> <%
> }
> %>
> </li>
> <%
> }
> %>
> </ul>
> <%
> }
> else
> {
> %>
> <p>JNDI context is empty</p>
> <%
> }
> }
> catch (NamingException ne)
> {
> %>
> <p>Error:<%= ne.getMessage() %><pre>
> <%
> java.io.PrintWriter myout = new java.io.PrintWriter(out);
> ne.printStackTrace(myout);
> myout.flush();
> %>
> </pre></p>
> <%
> }
> finally
> {
> if(null != e) try { e.close(); } catch (NamingException ne)
> { %><p><%= ne.getMessage() %></p><% }
>
> if(null != ctx) try { ctx.close(); } catch (NamingException ne)
> { %><p><%= ne.getMessage() %></p><% }
> }//foo
> %>
> </body>
> </html>
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.10 (MingW32)
> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/
>
> iEYEARECAAYFAk5pL3gACgkQ9CaO5/Lv0PBLAQCglRlAcKBZa5Gtrg494FfcvA2c
> /hIAoIu0fj/5ejz3+C3Pk/S8i1PeQG50
> =F0ZW
> -----END PGP SIGNATURE-----
>
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