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    <p>Honestly, this approach is absolutely not right. </p> <ul> <li><p>You are sniffing the user agent in the server side and depending the business job on it. This is in all cases a bad idea. If all you want is to specify a different file depending on the user agent, then rather do it in the HTML side, with help of JavaScript or CSS. Both client side languages are able to identify the <em>real</em> browser without the need to sniff the user agent string (which is namely spoofable).</p></li> <li><p>You are not responding correctly on <code>Range</code> requests. You're sending the complete file back instead of the requested <code>Range</code>. Firefox and IE do not use range requests and that's why it "works". Chrome and Safari use range requests.</p></li> </ul> <p>This should be possible without sniffing the user agent and properly responding to <code>Range</code> requests by <code>RandomAccessFile</code> instead of <code>File</code> and <code>byte[]</code>. It's only pretty a lot of code to take all <a href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html">HTTP specification</a> requirements into account, so here's just a link where you can find a concrete example of such a servlet: <a href="http://balusc.blogspot.com/2009/02/fileservlet-supporting-resume-and.html">FileServlet supporting resume and caching</a>.</p> <p>However, much better is to delegate the job to the servletcontainer's default servlet. If it's for example Tomcat, then all you need to do is to add the following line to <code>/conf/server.xml</code>:</p> <pre class="lang-xml prettyprint-override"><code>&lt;Context docBase="D:\media" path="/media" /&gt; </code></pre> <p>This way the desired media files are just available by <a href="http://localhost:8080/media/final.ogg">http://localhost:8080/media/final.ogg</a> and <a href="http://localhost:8080/media/final.mp4">http://localhost:8080/media/final.mp4</a> without the need to homegrow a servlet.</p>
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    1. COThanks, this is very helpful for me" FileServlet supporting resume and caching".
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