web.xml 是
<servlet>
<servlet-name>index</servlet-name>
<jsp-file>/index.jsp</jsp-file>
<init-param>
<param-name>heading</param-name>
<param-value>This is heading</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>index</servlet-name>
<url-pattern>/index</url-pattern>
</servlet-mapping>.
如何从 jsp 页面获取初始化参数“标题”?