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copied!<p>To upload multiple files I use <a href="http://livedemo.exadel.com/richfaces-demo/richfaces/fileUpload.jsf?c=fileUpload&tab=usage" rel="nofollow">RichFaces rich:fileUpload</a> component.</p> <p>Concerning the preview, I've got the similar problem and the best I found after couple of days of googling is following.</p> <p><a href="http://www.alfresco.com/" rel="nofollow">Alfresco</a> has the same problem and resolved it with :</p> <ul> <li>An open office which runs in server mode (socket) and all the office documents are sent by alfresco to open office in order to convert them in PDF</li> <li>Those PDF are converted to .swf viewer thanks to <a href="http://www.swftools.org/" rel="nofollow">SWFTOOLS</a></li> <li>This .swf is integrated in the HTML</li> <li>For images, it uses <a href="http://www.imagemagick.org/" rel="nofollow">ImageMagick</a> to create small version of the file I suppose</li> </ul> <p>Personnaly, I will try to implement it this way :</p> <ul> <li>Converting office documents to PDF thanks to open office in socket mode</li> <li>Transform the first page of the PDF into a PNG thanks to <a href="http://www.jpedal.org/open_source_pdf_viewer_download.php" rel="nofollow">JPedal</a> library</li> <li>Diplay that PNG to the end user</li> <li>For images I would perhaps use ImageMagick too ... but for now, I'm using <a href="http://seamframework.org/" rel="nofollow">Seam</a> <a href="http://docs.jboss.org/seam/2.2.1.Final/ui/apidocs/org/jboss/seam/ui/graphicImage/Image.html#scaleToFit%28int,%20int%29" rel="nofollow">Image.scaleToFit</a> API</li> </ul>

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