File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
The moose likes Servlets and the fly likes servlets interacting with other classes Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Java » Servlets
Bookmark "servlets interacting with other classes" Watch "servlets interacting with other classes" New topic

servlets interacting with other classes

bill bozeman
Ranch Hand

Joined: Jun 30, 2000
Posts: 1070
I tried to do some research on this, but I haven't found the answer yet.
I have 3 class files. 1 is a servlet and the other 2 are utility files that I created. The utility files are in a package, say it is named "com.siteName.dbAccess" and the two utility files are named "DBManager" and "ConnectionPool".
What I want is to have the servlet, say this is named "DBTest" to call the ConnectionPool class, which in turn uses the DBManager class. I have my classpath correct on my local machine, so I can compile it and run a non-servlet to test the two utility files, so I know they work, but I haven't been able to get it to work as a servlet.
I did edit my web.xml (My host is using Tomcat) and created an alias to the DBTest servlet. The two utility files are in a path like this:
and the DBTest servlet is in this path:
So, with all that said, I get a ClassNotFound error for the class ConnectionPool when I run the servlet. Is there something else in the web.xml that I need to set up so that the class DBTest can see these utility classes? Actually I will want many of my servlets to see these classes, so is there something I need to set up so that all of my servlets can see these classes?
I am stumped
[This message has been edited by bill bozeman (edited April 20, 2001).]
maha anna
Ranch Hand

Joined: Jan 31, 2000
Posts: 1467
Move your utility classes from ...WEB-INF/lib dir to .../WEB-INF/classes dir like this.
should be moved to
In all your servlets source files which make use of this package, put import statements like this.
import com.oreilly.servlet.*; //an example
Give it a try!
The lib dir is meant for ****.jar files. All utility classes go under WEB-INF/classes dir.
maha anna
[This message has been edited by maha anna (edited April 20, 2001).]
Frank Carver

Joined: Jan 07, 1999
Posts: 6920
Alternatively, if you really want to put your classes in the "lib" directory, you can always put them into a jar first.

Read about me at ~ Raspberry Alpha Omega ~ Frank's Punchbarrel Blog
I agree. Here's the link:
subject: servlets interacting with other classes
jQuery in Action, 3rd edition