详解利用plupload突破HTTP上传限制

<script type="text/javascript"> $(function() { $("#uploader").pluploadQueue({ runtimes : \'gears,flash,silverlight,browserplus,html5\', // 这里是说用什么技术引擎，由于国内浏览器问题这里一般使用flash即可。其他的删除掉。 url : \'upload.php\', // 服务端上传路径 max_file_size : \'10mb\', // 文件上传最大限制。 chunk_size : \'1mb\', // 上传分块每块的大小，这个值小于服务器最大上传限制的值即可。（文件总大小/chunk_size = 分块数）。 unique_names : true, // 上传的文件名是否唯一 resize : {width : 320, height : 240, quality : 90}, // 是否生成缩略图（仅对图片文件有效）。 filters : [ {title : "Image files", extensions : "jpg,gif,png"}, {title : "Zip files", extensions : "zip"} ], // 这个数组是选择器，就是上传文件时限制的上传文件类型 flash_swf_url : \'/plupload/js/plupload.flash.swf\', // plupload.flash.swf 的所在路径 silverlight_xap_url : \'/plupload/js/plupload.silverlight.xap\' // silverlight所在路径 }); // 这一块主要是防止在上传未结束前表带提交，具体大家可酌情修改编写 $(\'form\').submit(function(e) { var uploader = $(\'#uploader\').pluploadQueue(); // 取得上传队列 if (uploader.files.length > 0) { // 就是说如果上传队列中还有文件 uploader.bind(\'StateChanged\', function() { if (uploader.files.length === (uploader.total.uploaded + uploader.total.failed)) { $(\'form\')[0].submit(); } }); uploader.start(); } else { alert(\'You must queue at least one file.\'); } return false; }); }); </script>

<?php// HTTP headers for no cache etc 头部没有缓存 header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");header("Cache-Control: no-store, no-cache, must-revalidate");header("Cache-Control: post-check=0, pre-check=0", false);header("Pragma: no-cache");//上传路径 $targetDir = \'uploads/\';// 脚本执行时间 @set_time_limit(5 * 60);// 延迟 // usleep(5000); // 接收 pluploa的参数 $chunk = isset($_REQUEST["chunk"]) ? $_REQUEST["chunk"] : 0;$chunks = isset($_REQUEST["chunks"]) ? $_REQUEST["chunks"] : 0;$fileName = isset($_REQUEST["name"]) ? $_REQUEST["name"] : \'\';// 文件名整理 $fileName = preg_replace(\'/[^w._]+/\', \'\', $fileName);// 这里主要是如果JS参数设置了唯一文件名，则进行唯一文件名的处理，chunks<2 的意思是只有在不分块上传的情况下才会进行唯一文件名。否则将和分块上传的原理冲突，第1块以后的文件流将无法写入正确的文件中。 if ($chunks < 2 && file_exists($targetDir . DIRECTORY_SEPARATOR . $fileName)) { $ext = strrpos($fileName, \'.\'); $fileName_a = substr($fileName, 0, $ext); $fileName_b = substr($fileName, $ext); $count = 1; while (file_exists($targetDir . DIRECTORY_SEPARATOR . $fileName_a . \'_\' . $count . $fileName_b)) $count++; $fileName = $fileName_a . \'_\' . $count . $fileName_b; }/*创建文件目录*/ if (!file_exists($targetDir)) @mkdir($targetDir);if (is_dir($targetDir) && ($dir = opendir($targetDir))) { while (($file = readdir($dir)) !== false) { $filePath = $targetDir . DIRECTORY_SEPARATOR . $file; // Remove temp files if they are older than the max age if (preg_match(\'/\\.tmp$/\', $file) && (filemtime($filePath) < time() - $maxFileAge)) @unlink($filePath); } closedir($dir); } else die(\'{"jsonrpc" : "2.0", "error" : {"code": 100, "message": "Failed to open temp directory."}, "id" : "id"}\'); */// 上传写文件步骤,这一部分以下的代码可直接引用 if (isset($_SERVER["HTTP_CONTENT_TYPE"])) $contentType = $_SERVER["HTTP_CONTENT_TYPE"];if (isset($_SERVER["CONTENT_TYPE"])) $contentType = $_SERVER["CONTENT_TYPE"];// Handle non multipart uploads older WebKit versions didn\'t support multipart in HTML5 if (strpos($contentType, "multipart") !== false) { if (isset($_FILES[\'file\'][\'tmp_name\']) && is_uploaded_file($_FILES[\'file\'][\'tmp_name\'])) { // Open temp file $out = fopen($targetDir . DIRECTORY_SEPARATOR . $fileName, $chunk == 0 ? "wb" : "ab"); if ($out) { // Read binary input stream and append it to temp file $in = fopen($_FILES[\'file\'][\'tmp_name\'], "rb"); if ($in) { while ($buff = fread($in, 4096)) fwrite($out, $buff); } else die(\'{"jsonrpc" : "2.0", "error" : {"code": 101, "message": "Failed to open input stream."}, "id" : "id"}\'); fclose($in); fclose($out); @unlink($_FILES[\'file\'][\'tmp_name\']); } else die(\'{"jsonrpc" : "2.0", "error" : {"code": 102, "message": "Failed to open output stream."}, "id" : "id"}\'); } else die(\'{"jsonrpc" : "2.0", "error" : {"code": 103, "message": "Failed to move uploaded file."}, "id" : "id"}\'); } else { // Open temp file $out = fopen($targetDir . DIRECTORY_SEPARATOR . $fileName, $chunk == 0 ? "wb" : "ab"); if ($out) { // Read binary input stream and append it to temp file $in = fopen("php://input", "rb"); if ($in) { while ($buff = fread($in, 4096)) fwrite($out, $buff); } else die(\'{"jsonrpc" : "2.0", "error" : {"code": 101, "message": "Failed to open input stream."}, "id" : "id"}\'); fclose($in); fclose($out); } else die(\'{"jsonrpc" : "2.0", "error" : {"code": 102, "message": "Failed to open output stream."}, "id" : "id"}\'); }// Return JSON-RPC response die(\'{"jsonrpc" : "2.0", "result" : null, "id" : "id"}\'); ?>