Something like this ?
<servlet>
<servlet-name>testWS</servlet-name>
<servlet-class>com.full.package.name.testWS</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>testWS</servlet-name>
<url-pattern>/testWS</url-pattern>
</servlet-mapping>
http://localhost/contextroot/textWS?wsdl
should now work.