web端使用plupload上传文件，支持文件多选，显示文件大小、上传进度。
java服务器servlet保存客户端上传的文件，使用commons-fileupload-1.3.2组件
HTML、JS代码
<!doctype html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Update Config Files</title> <script type="text/javascript" src="scripts/jquery-2.1.4.min.js"></script> <script type="text/javascript" src="scripts/plupload-2.1.3/moxie.min.js"></script> <script type="text/javascript" src="scripts/plupload-2.1.3/plupload.min.js"></script> <script type="text/javascript" src="scripts/utils/util-find-parent.js"></script> </head> <body style="font: 13px Verdana; background: #eee; color: #333"> <h1>上传（更新）配置文件</h1> <div id="filelist">Your browser doesn't have Flash, Silverlight or HTML5 support.</div> <br /> <div id="container"> <