XML文件配置
<servlet>
内部名映射到全限定类名
<servlet-mapping>
内部名映射到公共url名
<web-app ...>
<servlet>
<servlet-name>Internal name 1</servlet-name>
<servlet-class>foo.Servlet1</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Internal name 1</servlet-name>
<url-pattern>/Public1</url-pattern>
</servlet-mapping>
</web-app>
