如何从jsp获取web.xml的servlet的init参数？

Question

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init参数"heading"？

Answer 1

<%=config.getInitParameter("heading")%>

问候.

Answer 2

得到它了!我的servlet映射是错误的!正确的映射是......

<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.jsp</url-pattern>
</servlet-mapping>

现在,我们可以通过"<%= config.getInitParameter("heading")%>"或"<%= getInitParameter("heading")%>"来访问init参数.

谢谢Peter Rader.