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PODesign solution for URL encoding
 

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    <p>I am planning a URL rewriter/encoder (maybe rewriter is a better term). The main purpose is to hide the exact URL from the client, since if he is smart enough, he can figure out how to mess up the application. </p> <p>The URL encoder would be an injective function <code>f(x) = y</code>. The decoder would be the inverse function of <strong>f</strong>, say <strong>g</strong> such that <code>g(y) = x</code>. This way I can encode and decode my URLs.</p> <p>A URL like:</p> <p><a href="http://www.myapp.com/servlet/myapp/template/MyScreen.vm/action/MyAction" rel="nofollow noreferrer">http://www.myapp.com/servlet/myapp/template/MyScreen.vm/action/MyAction</a> would be encoded to something like:</p> <p><a href="http://www.myapp.com/uyatsd6787asv6dyuasgbdxuasydgb876876v" rel="nofollow noreferrer">http://www.myapp.com/uyatsd6787asv6dyuasgbdxuasydgb876876v</a></p> <p>It does not matter what is in the encoded URL as far as it is not understandable.</p> <p>The problem is that I do not know how to manipulate the URL that the browser displays. I am using JBoss as a servlet container and Turbine servlet as the web application framework. I would need a module that receives the encoded URL, decodes it, passes it to Turbine, then it modifies the response's URL to show the encoded URL again. </p> <p><strong>Previous attempts to solve the problem:</strong> I have created a servlet filter, but I can not access the URL since the filter receives a ServletRequest that is a JBoss implementation. As far as I have read it seems that a servlet filter is not a good choice for manipulating the URL. </p>
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