Question

But WHERE is java.util?

Asked by: kjuliff

In a coldfusion example of imprting jsp is have the line

<%@page import = "java.util.*" %>

This throws an error.

Am I meant to have a file CALLED java.util?

If so where do I get it and which directory can I put it in?

<%@page import = "java.util.*" %>
 
<% request.setAttribute("myvariable","This"); %>
<% ((Map)Session.getAttribute("myApp")).put("myvariable", "is a"); %>
<% application.setAttribute("myApp.myvariable","test."); %>
 
<jsp:include page="hello.cfm">
<jsp:param name="name" value="Robert" />
</jsp:include>

                                  
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Asked On
2009-01-21 at 11:36:31ID24071486
Tags

java.util

Topic

ColdFusion Application Server

Participating Experts
4
Points
500
Comments
8

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Answers

 

by: Jones911Posted on 2009-01-21 at 11:53:38ID: 23433220

Can you show us the source of the example?

 

by: thehagmanPosted on 2009-01-21 at 11:55:06ID: 23433232

You may happen to have the wrong java engine - maybe you need to install e.g. explicitly Sun java?

 

by: duncancummingPosted on 2009-01-21 at 12:06:38ID: 23433349

Just so everyone's clear, the example kjuliff, refers to is in the documentation:
http://livedocs.adobe.com/coldfusion/7/htmldocs/wwhelp/wwhimpl/common/html/wwhelp.htm?context=ColdFusion_Documentation&file=00001565.htm

kjuliff, that example you pasted in is the code for the JSP page, not the Coldfusion page.  i.e. the JSP is importing the Coldfusion, but from your description it sounds like you're trying to do it the other way round.

You should have the java.util package for that JSP page to work correctly.

 

by: kjuliffPosted on 2009-01-21 at 12:55:19ID: 23433875

Yes but that was my question. Where can I  get it and where should I put it. i.e. what directory!

 

by: _agx_Posted on 2009-01-21 at 13:58:11ID: 23434501

> This throws an error.

What is the error? Perhaps you are not calling the code correctly.

> Where can I  get it and where should I put it. i.e. what directory

Normally, you should not need to do anything.  java.util.*  is a package of java classes that resides in a .jar file.  That jar file should be loaded automatically by the JVM running ColdFusion. IIRC, java.util.* is part of core java and is used by many things, including ColdFusion.  If it did not exist, I suspect you would have other problems.   So again, I suspect the problem is your code or maybe configuration.

 

by: _agx_Posted on 2009-01-21 at 15:38:32ID: 23435235

The example you posted works correctly on ColdFusion 8.  However, as duncancumming pointed out, it is an example of calling a ColdFusion page _from_ a JSP page. Not the other way around.

But to run that specific example, do the following:

1. Open the ColdFusion Administrator and go to Server Settings > Memory Variables.  Make sure sure the "Use J2EE session variables" option is checked

2. In the same web directory, create two test pages. One CF page and the other a JSP page

File: test.jsp
===================
<%@page import = "java.util.*" %>
 
<% request.setAttribute("myvariable","This"); %>
<% application.setAttribute("myApp.myVariable","test."); %>
<% ((Map)session.getAttribute("myApp")).put("myVariable", "is a"); %>

<jsp:include page="hello.cfm">
<jsp:param name="name" value="Robert" />
</jsp:include>


File: hello.cfm
===================
<cfapplication name="myApp" sessionmanagement="yes">
<cfoutput>
<h2>Hello #URL.name#!</h2>
Request.myVariable: #Request.myVariable#<br>
Session.myVariable: #Session.myVariable#<br>
Application.myVariable: #Application.myVariable#<br>
</cfoutput>

3. Then run the .JSP page in your browser.

Example:
http://127.0.0.1/yourfolder/test.jsp

 

by: kjuliffPosted on 2009-01-21 at 16:06:12ID: 23435383

I get
java.lang.NullPointerException
      at jrun__test2ejsp9._jspService(jrun__test2ejsp9.java:53)
      at jrun.jsp.runtime.HttpJSPServlet.service(HttpJSPServlet.java:43)
      at jrun.jsp.JSPServlet.service(JSPServlet.java:119)
      at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:106)
      at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)
      at jrun.servlet.JRunRequestDispatcher.invokeNext(JRunRequestDispatcher.java:586)
      at jrun.servlet.JRunRequestDispatcher.forwardInvoke(JRunRequestDispatcher.java:555)
      at jrun.servlet.JRunNamedDispatcher.forward(JRunNamedDispatcher.java:64)
      at coldfusion.license.JspLicenseServlet.service(Unknown Source)
      at coldfusion.bootstrap.BootstrapServlet.service(BootstrapServlet.java:89)
      at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:106)
      at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)
      at jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:286)
      at jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:543)
      at jrun.servlet.http.WebService.invokeRunnable(WebService.java:172)
      at jrunx.scheduler.ThreadPool$DownstreamMetrics.invokeRunnable(ThreadPool.java:320)
      at jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:428)
      at jrunx.scheduler.ThreadPool$UpstreamMetrics.invokeRunnable(ThreadPool.java:266)
      at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)

 

by: _agx_Posted on 2009-01-21 at 18:00:47ID: 23435946

Yes, you usually get that if you forget to run step 1:

Open the ColdFusion Administrator and go to Server Settings > Memory Variables.  Make sure sure the "Use J2EE session variables" option is checked

20120131-EE-VQP-002

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