On Tue, 17 Jul 2001, Simon Chan wrote:
> Hi,
>
> How to pass initial parameters to a JSP? I know how to pass initial
> parameters to a servlet via web.xml file (<init-param>). However, I
> don't know where to put for JSP. This is my JSP file
>
> ...
> <%
> String c = config.getInitParameter("cfg");
> ...
>
>
> Thanks in advance
>
>
> skc
>
In order to do this, you will need to declare a servlet definition for
your JSP page (including the init parameter) like this:
<servlet>
<servlet-name>My Page</servlet-name>
<jsp-file>/mypage.jsp</jsp-file>
<init-param>
<param-name>cfg</param-name>
<param-value>The Parameter Value</param-value)
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>My Page</servlet-name>
<url-pattern>/foo</url-pattern>
</servlet-mapping>
Now, when you access the following url (assuming /myapp is the context
path to your web app):
http://localhost:8080/myapp/foo
the page "/mypage.jsp" will be loaded, and it will have access to the
servlet initialization parameter you have defined above. Note that you
could set the url pattern to /mypage.jsp if you wanted to, but it is
crucial to actually have a servlet mapping -- otherwise, your page is
handled by the default JSP servlet (which does not have any
application-specific initialization parameters in its servlet definition).
Craig McClanahan
