Using Stripes Interceptor to prevent access to other servlets

I'm using Stripes 1.5 and I was using a interceptor (based on this example) to prevent unauthorized access to *.action pages.

Now I want to use the same interceptor to prevent access to a servlet.

I've added this this to web.xml (DisplayChart is the servlet I want to protect):

<filter-mapping>
    <filter-name>StripesFilter</filter-name>
    <servlet-name>DisplayChart</servlet-name>
    <dispatcher>REQUEST</dispatcher>
</filter-mapping>

But it doesn't work, the interceptor intercept method doesn't execute when accesing the DisplayChart servlet path (even if I @Intercepts all the LifeCycleStage).

Is there a way to a interceptor to execute when another servlet is accesed? Or Stripes filters are not intended to be used that way (and I'll have to use a plain Filter)?

Solution

I don't know if you can apply a Stripes interceptor to a non-Stripes servlet.

But i am pretty sure you shouldn't.

The Stripes interceptors are specific to Stripes, and Stripes's request lifecycle. A request to a plain servlet is not a Stripes request, and does not go through this lifecycle, even if it goes through the Stripes filter. Such a request should not use a Stripes interceptor, even if this is possible.

I suggest you factor out the authorization code from your Stripes interceptor into a Stripes-agnostic service class, then write a standard filter which uses that class. Your Stripes interceptor and your filter are then very small bits of code which hand off to the service.