How to embed servlet filter to an existing website

I want to make an application using java servlet filters and I want to know the possibility of making this application as an add-on where anyone could take this application as it is and attach it to his website without knowing anything about servletes and with a very low programming or no programming effort, is it possible? If yes how and if no what is the alternative?

836522 wrote:
I really cant thank everyone enough for your help, thank you :)
why not proxy? because I don't want the full functionalities of a proxy, so I thought why not to implement a servlet filter to do my task especially that all what I want to do could be easily implemented using the methods provided in servlets/filters. what I am thinking of now is to install servlet container and make it run in the proxy mode so any request to the website I want to protect will be directed first to the servlet then the servlet decide whether to pass this request to website or not, what do you think of this??I am afraid that will either not work or be overly complicated. The problem is with this
so any request to the website I want to protect will be directed first to the servlet then the servlet decide whether to pass this request to website or notHow will the servlet pass on the request to the web site? Since it is not part of the other application, it cannot do a forward or include on the resource. Similarly a chain.doFilter() which is the normal way for the Filter to pass the request along to the end resource will not work.
You can theorotically use a HttpClient from the Filter which will create a new http request to the underlying web site and flush the response received back to the browser. I think using a Proxy is the best bet. I would recommend an apache http server with some custom modules to implement your 'filter' code
ram.

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