servlet配置

 1 <!-- 配置过滤器 -->
 2   <filter>
 3       <filter-name>roster</filter-name>
 4       <filter-class>com.lv.filter.RosterFilter</filter-class>
 5   </filter>
 6   
 7   <filter-mapping>
 8       <filter-name>roster</filter-name>
 9       <url-pattern>*</url-pattern>
10   </filter-mapping>
11   
12   
13   <!-- 配置我们的servlet -->
14   <servlet>
15       <servlet-name>tree</servlet-name>
16       <servlet-class>com.lv.web.TreeServlet</servlet-class>
17       
18   <!-- 随着服务器的启动而初始化servlet -->
19       <load-on-startup>1</load-on-startup>
20       
21   </servlet>
22   <servlet-mapping>
23       <servlet-name>tree</servlet-name>
24       <url-pattern>/tree</url-pattern>
25   </servlet-mapping>