Random URL, Single content

I'm currently developing an app that generates a URL for a certain number of Subscribers. That has the same content. For example a web page with an image in it.

The URL pattern can be like this http://host:XXXX/foo/randomNumbers I'm planning to have 7 random numbers. That won't repeat for each subscribers.

I'm currently using Java with SpringMVC for this one. Hope you can help me I'm currently stuck with generating the URLs with the same content.

Thanks! :)