web.xml 参数

web.xml里面可以定义两种参数：
(1)application范围内的参数，存放在servletcontext中，在web.xml中配置如下：

<context-param>
<param-name>context/param</param-name>
<param-value>avalible during application</param-value>
</context-param>
(2)servlet范围内的参数，只能在servlet的init()方法中取得，在web.xml中配置如下：

<servlet>
<servlet-name>MainServlet</servlet-name>
<servlet-class>com.wes.controller.MainServlet</servlet-class>
<init-param>
<param-name>param1</param-name>
<param-value>avalible in servlet init()</param-value>
</init-param>
<load-on-startup>0</load-on-startup>
</servlet>