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From Paul Libbrecht <>
Subject Re: How to write a html filter using tomcat
Date Thu, 15 Jun 2000 13:56:54 GMT

I guess this is made somewhere, but I didn't find it.

I was about to finish such a stuff, the parser and invoker is made, I 
could send you that bit if you want...
The thing with such an idea is that JSPs are thought differently: 
currently my thing is made to refilter everything at each request, 
which is very unefficient. The basic idea would be to store a form of 
digested thing.

This is how JSPs are made, well, a bit too much to my taste: they 
need explicit pre-compilation.

I'd happily collaborate on such a project...


>I'm a little confused as to the scope of writing a html filter.
>Suppose that I want to write a piece of Java that for every html 
>page get served the code would filter through the html for any 
>foreign links and replace the link with a click through counter.
>I'd have no trouble writing the code. I just can't think of how to 
>get the code to run. If I wanted to write it in c then I could 
>simply create a apache response-handler. Is there a way to write 
>response-handlers with tomcat? It seams like I should be able to 
>say: for any request matching /foo/*.html send that request to 
>/servlets/Parser. Parser would then be able to look in the request 
>object and figure out what file was being requested, open it, parse 
>it, then dump it out. Does this make sense?
>Thanks for tuning in
>Gabriel Russell
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