This week's book giveaway is in the General Computing forum. We're giving away four copies of Arduino in Action and have Martin Evans, Joshua Noble, and Jordan Hochenbaum on-line! See this thread for details.
Hello everyone. I have tried to deploy a simple example servlet that I have used from a book, on the Tomcat server. The servlet compiles fine, is placed in the WEB-INF/classes folder under the directory as specified in the example - i.e. classes/com/wrox/servlets/ and is called ExampleServlet. I have also then specified this servlet in the web.xml file as the following - <servlet> <servlet-name>ExampleServlet</servlet-name> <servlet-class>com.wrox.servlets.ExampleServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>ExampleServlet</servlet-name> <url-pattern>/Example/*</url-pattern> </servlet-mapping> This code I also used straight out of the book. However, when I try to run open the servlet in the browser, I get an error message stating - Error allocating a servlet instance and also an error saying No ClassDefFoundError. Can anyone help?? Thans.
Joined: Feb 11, 2004
One more thing I have just noticed is when I start Tomcat, the console window states - Illegal argument exception: Invalid <url-pattern> ExampleServlet in servlet mapping. Hope this can help identify the problem.
I can't see anything wrong with the snippet of code. I would suggest you verify that your Deployment Descriptor is valid(.i.e spelling) by checking that all elements have closing tags and are in the correct order. Craig.