How to pass a reference when initializing a servlet

How would I go about passing a reference to the initialization of a servlet?

So, let's say I have something like this in my web.xml:

<开发者_开发技巧servlet>
    <servlet-name>RestTestServlet V3.1</servlet-name>
    <servlet-class>com.xxx.servlet.RestTestServlet</servlet-class>
    <init-param>
        <param-name>serviceConsumerKey</param-name>
        <param-value>com.xxx.oauth.ConsumerKey</param-value>
    </init-param>
</servlet>

When I try to get the parameter, of course I just get the literal string value ("com.xxx... etc).

The com.xxx.oauth.ConsumerKey is a string bean I pull from JNDI, but I'm not sure how to get the servlet to be aware of it. I'm using Spring.

Is there a way to do this via the web.xml? If not, how would you go about doing what I'm trying to do?

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The normal Spring approach would be to not write your own servlets, but rather use the Spring WebApplicationCOntext together with a DispatcherServlet. I.e., your servlet would be replaced by a spring bean, configured to handle certain requests and injected with the JNDI object.