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url-pattern

shuzo monsoon
Ranch Hand

Joined: Feb 11, 2004
Posts: 54
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.
shuzo monsoon
Ranch Hand

Joined: Feb 11, 2004
Posts: 54
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.
Craig Jackson
Ranch Hand

Joined: Mar 19, 2002
Posts: 405
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.
Dragos Haiduc
Greenhorn

Joined: Mar 05, 2004
Posts: 5
try using this as your url pattern:
<url-pattern>/Example</url-pattern>
danny liu
Ranch Hand

Joined: Jan 22, 2004
Posts: 185
After reading your code, I think it is correct.
I wonder if there is Example folder beneath your application folder.

Dan
 
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subject: url-pattern