webuploader实现大文件上传

来源：互联网发布：excel跨文件数据交互编辑：程序博客网时间：2024/05/22 05:24

目前在公司项目里遇到了需要上传大文件（视频、音频）的情况，特此记录。

此次项目引用了一款名为Webuploader的插件。官网：http://fex.baidu.com/webuploader/getting-started.html

html代码：

<html><head>    <meta charset="utf-8">    <script src="jquery-2.1.1.js"></script>    <link rel="stylesheet" type="text/css" href="webuploader.css">    <script type="text/javascript" src="webuploader.js"></script></head><body><style>.progress-bar{background-color:red}</style><div id="uploader" class="wu-example">        <div id="thelist" class="uploader-list"></div>    <div class="btns">        <div id="picker">选择文件</div>        <button id="ctlBtn" class="btn btn-default">开始上传</button>    </div></div><script>$(function(){    var uploader = WebUploader.create({                swf: 'Uploader.swf',                server: 'http://www.test.loc/webuploader/upload.php',                pick: '#picker',                resize: false,                chunked: true           //是否切片    });    var $list = $('#thelist'),        state = 'pending';        uploader.on( 'fileQueued', function( file ) {        $list.append( '<div id="' + file.id + '" class="item">' +            '<h4 class="info">' + file.name + '</h4>' +            '<p class="state">已添加...</p>' +        '</div>' );    });        uploader.on( 'uploadProgress', function( file, percentage ) {        var $li = $( '#'+file.id ),            $percent = $li.find('.progress .progress-bar');                if ( !$percent.length ) {            $percent = $('<div class="progress progress-striped active">' +              '<div class="progress-bar" role="progressbar" style="width: 0%;height:30px;">' +              '</div>' +            '</div>').appendTo( $li ).find('.progress-bar');        }        $li.find('p.state').text('上传中');        $percent.css( 'width', percentage * 100 + '%' );    });    uploader.on( 'uploadSuccess', function( file ) {        $( '#'+file.id ).find('p.state').text('已上传');    });    uploader.on( 'uploadError', function( file ) {        $( '#'+file.id ).find('p.state').text('上传出错');    });    uploader.on( 'uploadComplete', function( file ) {        $( '#'+file.id ).find('.progress').fadeOut();    });        $('#ctlBtn').on( 'click', function() {        if ( state === 'uploading' ) {            uploader.stop(true);            state = "pending";        } else {            uploader.upload();            state = "uploading";        }    });})</script></body></html>

后台upload.php

<?phpheader('Access-Control-Allow-Origin:*');header('Access-Control-Allow-Headers: X-Requested-With,X_Requested_With');$aFiles = getUploadFiles();saveMultiFiles($aFiles[0]);function getUploadFiles(){    $aFiles      = $_FILES;    $aMultiFiles = array();    // 判断是否是分片上传    $iChunk  = isset($_REQUEST["chunk"]) ? intval($_REQUEST["chunk"]) : 0;    $iChunks = isset($_REQUEST["chunks"]) ? intval($_REQUEST["chunks"]) : 0;    foreach ($aFiles as $sKey => $mFiles) {        if (is_array($mFiles['name'])) {            $iCnt = count($mFiles['name']);            for ($i = 0; $i < $iCnt; ++$i) {                $aMultiFiles[] = array(                    'key'      => $sKey . '_' . $i,                    'name'     => $mFiles['name'][$i],                    'tmp_name' => $mFiles['tmp_name'][$i],                    'error'    => $mFiles['error'][$i],                    'size'     => $mFiles['size'][$i],                    'chunk'    => $iChunk,                    'chunks'    => $iChunks,                );            }        } else {            $aMultiFiles[] = array(                'key'      => $sKey,                'name'     => $mFiles['name'],                'tmp_name' => $mFiles['tmp_name'],                'error'    => $mFiles['error'],                'size'     => $mFiles['size'],                'chunk'    => $iChunk,                'chunks'   => $iChunks,            );        }    }    return $aMultiFiles;}/**  * 将临时文件合并成正式文件  */function saveMultiFiles($aFile){    $tmp_file_path = './tmp';    $p_sName         = $aFile['name'];    $p_sNameFilename = pathinfo($p_sName, PATHINFO_FILENAME);    $p_sFilePath     = $tmp_file_path.DIRECTORY_SEPARATOR.$p_sNameFilename;    $p_sFilenamePath = $tmp_file_path.DIRECTORY_SEPARATOR.$p_sName;    if (!file_exists($p_sFilenamePath)) {        fopen($p_sFilenamePath, "w");    }    $p_sTmpName = $aFile['tmp_name'];    $p_iError   = $aFile['error'];    $p_iSize    = $aFile['size'];    $iChunk     = $aFile['chunk'] ;    $iChunks    = $aFile['chunks'];    $iError     = 0;        if ($p_iError > 0) {        // 文件上传出错        $iError  = 1;        $mReturn = '文件上传出错';        break;    }    if (!is_uploaded_file($p_sTmpName)) {        $iError  = 2;        $mReturn = 'upload error, use http post to upload';        break;    }    $oFInfo    = finfo_open();    $sMimeType = finfo_file($oFInfo, $p_sTmpName, FILEINFO_MIME_TYPE);    finfo_close($oFInfo);        $sExtension = pathinfo($p_sName, PATHINFO_EXTENSION);        if (empty($sExtension)) {        $iError  = 2;        $mReturn = 'upload error, The file does not have an extension ';        break;    }    if (!$in = @fopen($p_sTmpName, "rb")) {        $iError  = 1;        $mReturn = "Failed to open input stream.";        break;    }    if (!$out = @fopen("{$p_sFilePath}_{$iChunk}.parttmp", "wb")) {        $iError  = 1;        $mReturn = "Failed to open output stream.";        break;    }    while ($buff = fread($in, 4096)) {        fwrite($out, $buff);    }    @fclose($out);    @fclose($in);    rename("{$p_sFilePath}_{$iChunk}.parttmp", "{$p_sFilePath}_{$iChunk}.part");    $done  = true;    for ($index = 0; $index < $iChunks; $index++) {        if (!file_exists("{$p_sFilePath}_{$index}.part")) {            $done = false;            break;        }    }        if ($done) {                $sDestFile = './upload/'.time().'.'.$sExtension;      //合并文件地址        if (!$out = @fopen($sDestFile, "wb")) {            $iError  = 1;            $mReturn = "1Failed to open output stream.";            break;        }                $sFileSize = 0;        if (flock($out, LOCK_EX)) {            for ($index = 0; $index < $iChunks; $index++) {                if (!$in = @fopen("{$p_sFilePath}_{$index}.part", "rb")) {                    break;                }                while ($buff = fread($in, 4096)) {                    fwrite($out, $buff);                }                @fclose($in);                @unlink("{$p_sFilePath}_{$index}.part");            }            flock($out, LOCK_UN);        }        @fclose($out);        // 删除临时文件        @unlink($p_sFilenamePath);    }    return true;}

PS：事先需设置好服务器（nginx）和PHP的最大上传文件大小限制，不然会报错

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