Solved

Configure Tomcat for JavaBeans & classes

Posted on 2002-07-28
8
721 Views
Last Modified: 2012-08-14
Developing a web application on Tomcat 4.0 with JSPs in a M-V-C structure, I am using several JavaBeans to encapsulate various data objects, but currently on a very steep learning curve.

The JavaBean (a Java class file) is not currently being recognised by Tomcat.  I have tried to put the files concerned in the <<install>>/common/classes directory and in the application <<appl>>/WEB-INF/classes directory - both with no success.  I have added the correct <Context> object to the <<install>>/conf/server.xml file that points to my application directory.  There seems to be a lot of information about adding servlets to the local <<appl>>/WEB-INF/web.xml file, but does not seem to be an equivalent XML definition for a Java class/bean.

Surely there must be a simple way for Tomcat to recognise Java class files???

Looking forward to any help on this.

0
Comment
Question by:robertcarr
  • 4
  • 3
8 Comments
 
LVL 19

Accepted Solution

by:
cheekycj earned 50 total points
ID: 7184105
Are the class files in a package?

if they are make sure you are putting them in your <<app>>/WEB-INF/classes/package/path/classfile.class


CJ
0
 

Author Comment

by:robertcarr
ID: 7184980
Thanks for the suggestion.  I wasn't using a package (the project isn't really that big - yet).  However, got me thinking...

If I imported the .class file :
<%@ page language='java' import=<<JavaBean>> %>
before declaring useBean, it seems to work.

So what I will probably do with the multitude of beans yet to write, is put them all in a package then import it to the JSPs as required.

It's probably a fudge, but it seems to work.  I still can't understand why changing the classpath had no effect. Looking forward to seeing a book that explains the details of Tomcat in simple terms!

Rob
0
 

Author Comment

by:robertcarr
ID: 7184982
Not quite the answer needed, but was a catalyst to finding a solution.
0
Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

 
LVL 19

Expert Comment

by:cheekycj
ID: 7185447
changing the classpath is not going to make your JSP/Application see the classes just allow Tomcat's Application Server a path to look for any Java classes that you maybe importing.

CJ
0
 
LVL 19

Expert Comment

by:cheekycj
ID: 7185449
A C?

:-(
0
 

Author Comment

by:robertcarr
ID: 7187700
Thanks cheekycj - I'm slowly getting there.  Painful but I think I can see the light.  
Anyway next problem is now JDBC.  I think there might be a 100 pointer waiting in the wings, if it hasn't already been asked...
0
 

Author Comment

by:robertcarr
ID: 7232185
Sorry about the C cheekcj.  Only new to the EE, I hadn't quite realised how the grading should work.  Should have been an 'A'.

Sorry for blemishing your previously faultless record.  No idea how to change the grade either.
0
 

Expert Comment

by:Jgould
ID: 7284274
don't worry Robert, can happen to all of us read also

http://www.experts-exchange.com/jsp/cmtyQuestAnswer.jsp

upgraded to A

JGould-EE Moderator
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
constructor overloading 2 87
build fail in maven project 11 192
Best practices to work on a spring MVC project 1 126
doubleChar java challenge 7 121
A project that enables an administrator to perform actions within a user session context not just at the time of login but any time later on day(s) or week(s) later.
Riverbed Technology's webinar discusses networking for the cloud era with simplified SD-WAN cloud connectivity.

820 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question