• 基于ajaxFileUpload,兼容ie7以上、chrome等浏览器的文件上传功能


    第一步:html中引入jQuery-1.7.1.js和ajaxFileUpload.js

     1 <!DOCTYPE html>
     2 <html xmlns="http://www.w3.org/1999/xhtml">
     3 <head>
     4     <title>企业年金数据校验平台</title>
     5     <link href="css/index.css" rel="stylesheet" type="text/css" />
     6 </head>
     7 <body>
     8     <div class="container">
     9         <div class="head">
    10             <div class="user-nav">
    11                 <div class="user-info">
    12                     <span id="username"></span><span class="logout can-click">退出</span>
    13                 </div>
    14             </div>
    15             <div class="nav-title">
    16                 <span>企业年金数据校验平台</span>
    17             </div>
    18 <!--            <div class="nav-attention">
    19                 <img alt="light" src="images/atten_light.gif" class="atten-light" />
    20                 <span class="">重要提醒:</span> <span>XXXXXXXXXXX</span>
    21             </div>-->
    22         </div>
    23         <div class="main">
    24             <div class="main-nav">
    25                 
    26             </div>
    27             <div class="main-top">
    28                 <div class="main-tl">
    29                     <div class="exl-submit">
    30                         <span class="exl-submit-til">Excel上传</span> <a class="btn-upload exl-submit-can"
    31                             id="btn-upload" href="#">
    32                             <input type="file" id="excel_upload" name="file" />
    33                         </a>
    34                     </div>
    35                 </div>
    36                 <div class="main-tr">
    37                 </div>
    38             </div>
    39             <div class="main-mid">
    40             </div>
    41             <div class="main-bottom">
    42                 <div id="loading_info" class="loading-info">
    43                 </div>
    44                 <div id="execute_result" class="execute-result">
    45                     <div id="result-step-two" class="result-wrap">
    46                         <div class="result-left"></div>
    47                         <div class="result-right"></div>
    48                     </div>
    49                     <div id="result-step-three" class="result-wrap">
    50                     </div>
    51                     <div id="result-step-four" class="result-wrap">
    52                     </div>
    53                     
    54                 </div>
    55             </div>
    56         </div>
    57     </div>
    58 </body>
    59 <script src="http://xxx.xxx.xxx.xxx/commonScript/jquery/jquery-1.7.1.min.js" type="text/javascript"></script>
    60 <script src="http://xxx.xxx.xxx.xxx/commonScript/format.js" type="text/javascript"></script>
    61 <script src="js/ajaxfileupload.js" type="text/javascript"></script>
    62 <script src="js/tools.js" type="text/javascript"></script>
    63 <script src="js/index.js" type="text/javascript"></script>
    64 </html>

    第二步:ajaxFileUpload.js代码

      1 jQuery.extend({
      2     handleError: function (s, xhr, status, e) {
      3         // If a local callback was specified, fire it  
      4         if (s.error) {
      5             s.error.call(s.context || s, xhr, status, e);
      6         }
      7 
      8         // Fire the global callback  
      9         if (s.global) {
     10             (s.context ? jQuery(s.context) : jQuery.event).trigger("ajaxError", [xhr, s, e]);
     11         }
     12     },
     13     createUploadIframe: function (id, uri) {
     14 
     15         var frameId = 'jUploadFrame' + id;
     16 
     17         if (window.ActiveXObject) {
     18             if (jQuery.browser.version == "9.0") {
     19                 io = document.createElement('iframe');
     20                 io.id = frameId;
     21                 io.name = frameId;
     22             }
     23             else if (jQuery.browser.version == "6.0" || jQuery.browser.version == "7.0" || jQuery.browser.version == "8.0") {
     24 
     25                 var io = document.createElement('<iframe id="' + frameId + '" name="' + frameId + '" />');
     26                 if (typeof uri == 'boolean') {
     27                     io.src = 'javascript:false';
     28                 }
     29                 else if (typeof uri == 'string') {
     30                     io.src = uri;
     31                 }
     32             }
     33         }
     34         else {
     35             var io = document.createElement('iframe');
     36             io.id = frameId;
     37             io.name = frameId;
     38         }
     39         io.style.position = 'absolute';
     40         io.style.top = '-1000px';
     41         io.style.left = '-1000px';
     42 
     43         document.body.appendChild(io);
     44 
     45         return io;
     46     },
     47     ajaxUpload: function (s, xml) {
     48         //if((fromFiles.nodeType&&!((fileList=fromFiles.files)&&fileList[0].name)))  
     49 
     50         var uid = new Date().getTime(), idIO = 'jUploadFrame' + uid, _this = this;
     51         var jIO = $('<iframe name="' + idIO + '" id="' + idIO + '" style="display:none">').appendTo('body');
     52         var jForm = $('<form action="' + s.url + '" target="' + idIO + '" method="post" enctype="multipart/form-data" style="display:none"></form>').appendTo('body');
     53         var oldElement = $('#' + s.fileElementId);
     54         var newElement = $(oldElement).clone();
     55         $(oldElement).attr('id', 'jUploadFile' + uid);
     56         $(oldElement).before(newElement);
     57         $(oldElement).appendTo(jForm);
     58 
     59         this.remove = function () {
     60             if (_this !== null) {
     61                 jNewFile.before(jOldFile).remove();
     62                 jIO.remove(); jForm.remove();
     63                 _this = null;
     64             }
     65         }
     66         this.onLoad = function () {
     67 
     68             var data = $(jIO[0].contentWindow.document.body).text();
     69 
     70             try {
     71 
     72                 if (data != undefined) {
     73                     data = eval('(' + data + ')');
     74                     try {
     75 
     76                         if (s.success)
     77                             s.success(data, status);
     78 
     79                         // Fire the global callback  
     80                         if (s.global)
     81                             jQuery.event.trigger("ajaxSuccess", [xml, s]);
     82                         if (s.complete)
     83                             s.complete(data, status);
     84                         xml = null;
     85                     } catch (e) {
     86 
     87                         status = "error";
     88                         jQuery.handleError(s, xml, status, e);
     89                     }
     90 
     91                     // The request was completed  
     92                     if (s.global)
     93                         jQuery.event.trigger("ajaxComplete", [xml, s]);
     94                     // Handle the global AJAX counter  
     95                     if (s.global && ! --jQuery.active)
     96                         jQuery.event.trigger("ajaxStop");
     97 
     98                     // Process result  
     99 
    100                 }
    101             } catch (ex) {
    102                 alert(ex.message);
    103             };
    104         }
    105         this.start = function () { jForm.submit(); jIO.load(_this.onLoad); };
    106         return this;
    107 
    108     },
    109     createUploadForm: function (id, url, fileElementId, data) {
    110         //create form     
    111         var formId = 'jUploadForm' + id;
    112         var fileId = 'jUploadFile' + id;
    113         var form = jQuery('<form  action="' + url + '" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>');
    114         if (data) {
    115             for (var i in data) {
    116                 jQuery('<input type="hidden" name="' + i + '" value="' + data[i] + '" />').appendTo(form);
    117             }
    118         }
    119 
    120         var oldElement = jQuery('#' + fileElementId);
    121         var newElement = jQuery(oldElement).clone();
    122         jQuery(oldElement).attr('id', fileId);
    123         jQuery(oldElement).before(newElement);
    124         jQuery(oldElement).appendTo(form);
    125 
    126         //set attributes  
    127         jQuery(form).css('position', 'absolute');
    128         jQuery(form).css('top', '-1200px');
    129         jQuery(form).css('left', '-1200px');
    130         jQuery(form).appendTo('body');
    131         return form;
    132     },
    133     ajaxFileUpload: function (s) {
    134         // TODO introduce global settings, allowing the client to modify them for all requests, not only timeout      
    135         // Create the request object  
    136         var xml = {};
    137         s = jQuery.extend({}, jQuery.ajaxSettings, s);
    138         if (window.ActiveXObject) {
    139             var upload = new jQuery.ajaxUpload(s, xml);
    140             upload.start();
    141 
    142         } else {
    143             var id = new Date().getTime();
    144             var form = jQuery.createUploadForm(id, s.url, s.fileElementId, (typeof (s.data) == 'undefined' ? false : s.data));
    145             var io = jQuery.createUploadIframe(id, s.secureuri);
    146             var frameId = 'jUploadFrame' + id;
    147             var formId = 'jUploadForm' + id;
    148             // Watch for a new set of requests  
    149             if (s.global && !jQuery.active++) {
    150                 jQuery.event.trigger("ajaxStart");
    151             }
    152             var requestDone = false;
    153 
    154             if (s.global)
    155                 jQuery.event.trigger("ajaxSend", [xml, s]);
    156             // Wait for a response to come back  
    157             var uploadCallback = function (isTimeout) {
    158                 var io = document.getElementById(frameId);
    159 
    160                 try {
    161                     if (io.contentWindow) {
    162                         xml.responseText = io.contentWindow.document.body ? io.contentWindow.document.body.innerHTML : null;
    163                         xml.responseXML = io.contentWindow.document.XMLDocument ? io.contentWindow.document.XMLDocument : io.contentWindow.document;
    164 
    165                     } else if (io.contentDocument) {
    166                         xml.responseText = io.contentDocument.document.body ? io.contentDocument.document.body.innerHTML : null;
    167                         xml.responseXML = io.contentDocument.document.XMLDocument ? io.contentDocument.document.XMLDocument : io.contentDocument.document;
    168                     }
    169                 } catch (e) {
    170                     jQuery.handleError(s, xml, null, e);
    171                 }
    172                 if (xml || isTimeout == "timeout") {
    173                     requestDone = true;
    174                     var status;
    175                     try {
    176                         status = isTimeout != "timeout" ? "success" : "error";
    177                         // Make sure that the request was successful or notmodified  
    178                         if (status != "error") {
    179                             // process the data (runs the xml through httpData regardless of callback)  
    180                             var data = jQuery.uploadHttpData(xml, s.dataType);
    181                             // If a local callback was specified, fire it and pass it the data  
    182 
    183                             if (s.success)
    184                                 s.success(data, status);
    185 
    186                             // Fire the global callback  
    187                             if (s.global)
    188                                 jQuery.event.trigger("ajaxSuccess", [xml, s]);
    189                             if (s.complete)
    190                                 s.complete(data, status);
    191 
    192                         } else
    193                             jQuery.handleError(s, xml, status);
    194                     } catch (e) {
    195                         status = "error";
    196                         jQuery.handleError(s, xml, status, e);
    197                     }
    198 
    199                     // The request was completed  
    200                     if (s.global)
    201                         jQuery.event.trigger("ajaxComplete", [xml, s]);
    202                     // Handle the global AJAX counter  
    203                     if (s.global && ! --jQuery.active)
    204                         jQuery.event.trigger("ajaxStop");
    205 
    206                     // Process result  
    207                     jQuery(io).unbind();
    208 
    209                     setTimeout(function () {
    210                         try {
    211                             jQuery(io).remove();
    212                             jQuery(form).remove();
    213 
    214                         } catch (e) {
    215                             jQuery.handleError(s, xml, null, e);
    216                         }
    217 
    218                     }, 100);
    219 
    220                     xml = null;
    221 
    222                 }
    223             };
    224             // Timeout checker  
    225             if (s.timeout > 0) {
    226                 setTimeout(function () {
    227                     // Check to see if the request is still happening  
    228                     if (!requestDone) uploadCallback("timeout");
    229                 }, s.timeout);
    230             }
    231 
    232             try {
    233 
    234                 var form = jQuery('#' + formId);
    235                 jQuery(form).attr('action', s.url);
    236                 jQuery(form).attr('method', 'POST');
    237                 jQuery(form).attr('target', frameId);
    238 
    239                 if (form.encoding) {
    240                     jQuery(form).attr('encoding', 'multipart/form-data');
    241                 }
    242                 else {
    243                     jQuery(form).attr('enctype', 'multipart/form-data');
    244                 }
    245 
    246 
    247                 jQuery(form).submit();
    248 
    249             } catch (e) {
    250                 jQuery.handleError(s, xml, null, e);
    251             }
    252 
    253             jQuery('#' + frameId).load(uploadCallback);
    254             return { abort: function () { } };
    255 
    256         }
    257     },
    258 
    259     uploadHttpData: function (r, type) {
    260 
    261         var data = !type;
    262         data = type == "xml" || data ? r.responseXML : r.responseText;
    263         // If the type is "script", eval it in global context  
    264         if (type == "script")
    265             jQuery.globalEval(data);
    266         // Get the JavaScript object, if JSON is used.  
    267         if (type == "json") {
    268 
    269             //eval("data = " + $(data).html());//默认方式,在ie下不好使
    270             //data = jQuery.parseJSON(jQuery(data).text());//第一次修改后,ie7、8、9、10可用,ie11不可用
    271             try {
    272                 data = jQuery.parseJSON(data); //第二次修改,ie全兼容
    273             } catch (e) {
    274                 data = jQuery.parseJSON(jQuery(data).text());
    275             }
    276 
    277         }
    278         // evaluate scripts within html  
    279         if (type == "html")
    280             jQuery("<div>").html(data).evalScripts();
    281 
    282         return data;
    283     }
    284 }); 

    第三步:index.js代码

     1 function fnExcelUpload(event) {
     2     /// <summary>上传Excel</summary>
     3     /// <param name="event" type="Object">file对象</param>
     4     fnPushMainTr();
     5 
     6     $.ajaxFileUpload({
     7         url: "Service.ashx?Type=Upload",
     8         secureuri: false, // 一般设置为false  
     9         fileElementId: "excel_upload", // 文件上传表单的id <input type="file" id="fileUpload" name="file" />  
    10         dataType: 'json', // 返回值类型 一般设置为json  
    11         success: function (data) {
    12             if (!data || data.reuslt == 'error' || data.result == 'warning') {
    13                 fnErrorMsg(data);
    14                 return;
    15             }
    16             //设置上传Excel按钮样式
    17             $('#btn-upload').removeClass('exl-submit-can').addClass('exl-submit-no').children('input').attr('disabled', true);
    18             //设置第一步的样式,并增加文字提示“完成”
    19             $('#step_one').removeClass('step-one-a').addClass('step-one-b').siblings('p:last').addClass('fc-green').children('span').text('完成')
    20                 .parents('li').addClass('fc-green');
    21             $('#loading_info').html('<span class="progress">Excel格式校验进行中</span>');
    22             setTimeout(function () {
    23                 fnGetState();
    24             }, 1000);
    25 
    26         },
    27         error: function (data)// 服务器响应失败处理函数  
    28         {
    29             console.log("服务器异常");
    30         }
    31     });
    32 }

    注:使用ajaxFileUpload.js上传excel文件时,在ie9以上会弹出下载窗口,ie7/8会报错缺少“)”,这是因为服务端返回的数据是json,ie无法解析导致的,

      如果之前是application/json的话就会弹出下载窗口,需要将服务器响应头修改为:Content-Type:text/html;charset=UTF-8即可

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  • 原文地址:https://www.cnblogs.com/front-end-develop/p/6214818.html
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