Java代码 
- <?php
- /**
- $filename = 'index.php';
- $download = new Download('php,exe,html', false);
- if (!$download->downloadfile($filename)) {
- echo $download->getErrorMsgs();
- }
- */
- class Download {
- private $debug = false;
- private $errorMsg = '';
- private $filter = array();
- private $fileName = '';
- private $mineType = '';
- private $xlq_filetype = array();
- private $limitTime = 60;
- /**
- * @param string $fileFilter
- * @param boolean $isDebug
- */
- function __construct($fileFilter = '', $isDebug = true) {
- $this->setFilter($fileFilter);
- $this->setDebug($isDebug);
- $this->setFileType();
- }
- function downloadfile($filename) {
- $this->fileName = $filename;
- if ($this->filecheck()) {
- $fn = basename($this->fileName);
- ob_end_clean();
- @set_time_limit($this->limitTime);
- header('Cache-control: max-age=31536000');
- header('Expires: ' . gmdate('D, d M Y H:i:s', time() + 31536000) . ' GMT');
- header('Content-Encoding: none');
- header('Content-Length: ' . filesize($this->fileName));
- header('Content-Disposition: attachment; filename=' . $fn);
- header('Content-Type: ' . $this->mineType);
- readfile($this->fileName);
- return true;
- } else {
- return false;
- }
- }
- function filecheck() {
- $fileName = $this->fileName;
- if (file_exists($fileName)) {
- $fileType = strtolower(array_pop(explode(".", $fileName)));
- if (!in_array($fileType, $this->filter)) {
- $this->errorMsg .= sprintf("%s 不允许下载", $fileName);
- if ($this->debug) exit(sprintf("%s 不允许下载", $fileName));
- return false;
- } else {
- if (function_exists("mime_content_type")) {
- $this->mineType = mime_content_type($fileName);
- }
- if (empty($this->mineType)) {
- if (isset($this->xlq_filetype[$fileType])) {
- $this->mineType = $this->xlq_filetype[$fileType];
- }
- }
- if (!empty($this->mineType)) {
- return true;
- } else {
- $this->errorMsg .= "获取文件类型出错";
- if ($this->debug) exit("获取文件类型出错");
- return false;
- }
- }
- } else {
- $this->errorMsg .= sprintf("%s 不存在", $fileName);
- if ($this->debug) exit(sprintf("%s 不存在", $fileName));
- return false;
- }
- }
- function setFileType() {
- $this->xlq_filetype['chm'] = 'application/octet-stream';
- $this->xlq_filetype['ppt'] = 'application/vnd.ms-powerpoint';
- $this->xlq_filetype['xls'] = 'application/vnd.ms-excel';
- $this->xlq_filetype['doc'] = 'application/msword';
- $this->xlq_filetype['exe'] = 'application/octet-stream';
- $this->xlq_filetype['rar'] = 'application/octet-stream';
- $this->xlq_filetype['js'] = "javascript/js";
- $this->xlq_filetype['css'] = "text/css";
- $this->xlq_filetype['hqx'] = "application/mac-binhex40";
- $this->xlq_filetype['bin'] = "application/octet-stream";
- $this->xlq_filetype['oda'] = "application/oda";
- $this->xlq_filetype['pdf'] = "application/pdf";
- $this->xlq_filetype['ai'] = "application/postsrcipt";
- $this->xlq_filetype['eps'] = "application/postsrcipt";
- $this->xlq_filetype['es'] = "application/postsrcipt";
- $this->xlq_filetype['rtf'] = "application/rtf";
- $this->xlq_filetype['mif'] = "application/x-mif";
- $this->xlq_filetype['csh'] = "application/x-csh";
- $this->xlq_filetype['dvi'] = "application/x-dvi";
- $this->xlq_filetype['hdf'] = "application/x-hdf";
- $this->xlq_filetype['nc'] = "application/x-netcdf";
- $this->xlq_filetype['cdf'] = "application/x-netcdf";
- $this->xlq_filetype['latex'] = "application/x-latex";
- $this->xlq_filetype['ts'] = "application/x-troll-ts";
- $this->xlq_filetype['src'] = "application/x-wais-source";
- $this->xlq_filetype['zip'] = "application/zip";
- $this->xlq_filetype['bcpio'] = "application/x-bcpio";
- $this->xlq_filetype['cpio'] = "application/x-cpio";
- $this->xlq_filetype['gtar'] = "application/x-gtar";
- $this->xlq_filetype['shar'] = "application/x-shar";
- $this->xlq_filetype['sv4cpio'] = "application/x-sv4cpio";
- $this->xlq_filetype['sv4crc'] = "application/x-sv4crc";
- $this->xlq_filetype['tar'] = "application/x-tar";
- $this->xlq_filetype['ustar'] = "application/x-ustar";
- $this->xlq_filetype['man'] = "application/x-troff-man";
- $this->xlq_filetype['sh'] = "application/x-sh";
- $this->xlq_filetype['tcl'] = "application/x-tcl";
- $this->xlq_filetype['tex'] = "application/x-tex";
- $this->xlq_filetype['texi'] = "application/x-texinfo";
- $this->xlq_filetype['texinfo'] = "application/x-texinfo";
- $this->xlq_filetype['t'] = "application/x-troff";
- $this->xlq_filetype['tr'] = "application/x-troff";
- $this->xlq_filetype['roff'] = "application/x-troff";
- $this->xlq_filetype['shar'] = "application/x-shar";
- $this->xlq_filetype['me'] = "application/x-troll-me";
- $this->xlq_filetype['ts'] = "application/x-troll-ts";
- $this->xlq_filetype['gif'] = "image/gif";
- $this->xlq_filetype['jpeg'] = "image/pjpeg";
- $this->xlq_filetype['jpg'] = "image/pjpeg";
- $this->xlq_filetype['jpe'] = "image/pjpeg";
- $this->xlq_filetype['ras'] = "image/x-cmu-raster";
- $this->xlq_filetype['pbm'] = "image/x-portable-bitmap";
- $this->xlq_filetype['ppm'] = "image/x-portable-pixmap";
- $this->xlq_filetype['xbm'] = "image/x-xbitmap";
- $this->xlq_filetype['xwd'] = "image/x-xwindowdump";
- $this->xlq_filetype['ief'] = "image/ief";
- $this->xlq_filetype['tif'] = "image/tiff";
- $this->xlq_filetype['tiff'] = "image/tiff";
- $this->xlq_filetype['pnm'] = "image/x-portable-anymap";
- $this->xlq_filetype['pgm'] = "image/x-portable-graymap";
- $this->xlq_filetype['rgb'] = "image/x-rgb";
- $this->xlq_filetype['xpm'] = "image/x-xpixmap";
- $this->xlq_filetype['txt'] = "text/plain";
- $this->xlq_filetype['c'] = "text/plain";
- $this->xlq_filetype['cc'] = "text/plain";
- $this->xlq_filetype['h'] = "text/plain";
- $this->xlq_filetype['html'] = "text/html";
- $this->xlq_filetype['htm'] = "text/html";
- $this->xlq_filetype['htl'] = "text/html";
- $this->xlq_filetype['rtx'] = "text/richtext";
- $this->xlq_filetype['etx'] = "text/x-setext";
- $this->xlq_filetype['tsv'] = "text/tab-separated-values";
- $this->xlq_filetype['mpeg'] = "video/mpeg";
- $this->xlq_filetype['mpg'] = "video/mpeg";
- $this->xlq_filetype['mpe'] = "video/mpeg";
- $this->xlq_filetype['avi'] = "video/x-msvideo";
- $this->xlq_filetype['qt'] = "video/quicktime";
- $this->xlq_filetype['mov'] = "video/quicktime";
- $this->xlq_filetype['moov'] = "video/quicktime";
- $this->xlq_filetype['movie'] = "video/x-sgi-movie";
- $this->xlq_filetype['au'] = "audio/basic";
- $this->xlq_filetype['snd'] = "audio/basic";
- $this->xlq_filetype['wav'] = "audio/x-wav";
- $this->xlq_filetype['aif'] = "audio/x-aiff";
- $this->xlq_filetype['aiff'] = "audio/x-aiff";
- $this->xlq_filetype['aifc'] = "audio/x-aiff";
- $this->xlq_filetype['swf'] = "application/x-shockwave-flash";
- }
- function setFilter($fileFilter) {
- if (empty($fileFilter)) return;
- $this->filter = explode(",", strtolower($fileFilter));
- }
- function setDebug($debug) {
- $this->debug = $debug;
- }
- function setlimittime($limittime) {
- $this->limitTime = $limittime;
- }
- function getfilename($filename) {
- return $this->fileName;
- }
- function getErrorMsgs() {
- return $this->errorMsg;
- }
- function __destruct() {
- $this->errorMsg = '';
- }
- }
- ?>
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