Have you tried
http://localhost:8080/test/TestServlet? You can then add more servlets like this:
<servlet>
<servlet-name>TestServlet</servlet-name>
<servlet-class>TestServlet</servlet-class>
</servlet>
<servlet>
<servlet-name>TestServlet2</servlet-name>
<servlet-class>TestServlet2</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>TestServlet</servlet-name>
<url-pattern>/TestServlet</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>TestServlet2</servlet-name>
<url-pattern>/TestServlet2</url-pattern>
</servlet-mapping>
Hope it helps.