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jQuery：ajaxfileupload.js多文件上传-传值-跨域
网络 2014/10/31 17:27:34在使用jQuery的ajaxfileupload.js插件来处理ajax上传图片功能，但内置的功能有3个问题
不能同时上传多个文件
不能传递参数
主域下的跨域提交问题
以及一个jQuery版本问题handleError
下面说下对于个个问题的处理方式，并在最后放上完整的代码，可以直接复制
同时上传多个文件
var oldElement = jQuery('#' + fileElementId); var newElement = jQuery(oldElement).clone(); jQuery(oldElement).attr('id', fileId); jQuery(oldElement).before(newElement); jQuery(oldElement).appendTo(form);修改为：
if(typeof(fileElementId) == 'string'){ fileElementId = [fileElementId]; } for(var i in fileElementId){ var oldElement = jQuery('#' + fileElementId[i]); var newElement = jQuery(oldElement).clone(); jQuery(oldElement).attr('id', fileId); jQuery(oldElement).before(newElement); jQuery(oldElement).appendTo(form); }使用：
$.ajaxFileUpload({ url:'/ajax.php', fileElementId:['img1','img2']//原先是fileElementId:’img1’,通过传递数组实现多文件上传 });传递多个参数
var form = jQuery.createUploadForm(id, s.fileElementId);
修改为：
var form = jQuery.createUploadForm(id, s.fileElementId, (typeof(s.data)=='undefined'?false:s.data));
createUploadForm: function(id, fileElementId)
修改为：
createUploadForm: function(id, fileElementId, data)
并在//single前添加
if(data) { for(var i in data) { jQuery('<input type="hidden" name="' + i + '" value="' + data[i] + '" />').appendTo(form); } }使用：
$.ajaxFileUpload({ url:'/ajax.php', fileElementId:['img1','img2'], data:{ }//传递对象结构{name:name1} });跨域
这个不是插件本身的问题，我的解决方法也只适用于同一主域名
在url的请求返回中添加<script>document.domain = "xxxx.com";</script>
因为请求是通过读取返回页面的文档内容，在这时候实际返回页面是会执行js脚本的，并且该脚本不会进入后续的文档加载中
所以只需将修改文档域与当前页面一致就行
在调用页面添加：document.domain = "xxxx.com";
不修改插件本身
handleError
jquery在1.4以后不支持handleError所以需要自行添加
, handleError: function( s, xhr, status, e ) { // If a local callback was specified, fire it if ( s.error ) { s.error.call( s.context || s, xhr, status, e ); } // Fire the global callback if ( s.global ) { (s.context ? jQuery(s.context) : jQuery.event).trigger( "ajaxError", [xhr, s, e] ); } }完整的代码
jQuery.extend({ createUploadIframe: function(id, uri){ //create frame var frameId = 'jUploadFrame' + id; var iframeHtml = '<iframe id="' + frameId + '" name="' + frameId + '" style="position:absolute; top:-9999px; left:-9999px"'; if(window.ActiveXObject){ if(jQuery.browser.version=="9.0" || jQuery.browser.version=="10.0"){ var io = document.createElement('iframe'); io.id = frameId; io.name = frameId; }else if(jQuery.browser.version=="6.0" || jQuery.browser.version=="7.0" || jQuery.browser.version=="8.0"){ var io = document.createElement('<iframe id="' + frameId + '" name="' + frameId + '" />'); if(typeof uri== 'boolean'){ io.src = 'javascript:false'; } else if(typeof uri== 'string'){ io.src = uri; } } } iframeHtml += ' />'; jQuery(iframeHtml).appendTo(document.body); return jQuery('#' + frameId).get(0); }, createUploadForm: function(id, fileElementId, data){ //create form var formId = 'jUploadForm' + id; var fileId = 'jUploadFile' + id; var form = jQuery('<form action="" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>'); if(data){ for(var i in data){ jQuery('<input type="hidden" name="' + i + '" value="' + data[i] + '" />').appendTo(form); } } //single if(typeof(fileElementId) == 'string'){ fileElementId = [fileElementId]; } for(var i in fileElementId){ var oldElement = jQuery('#' + fileElementId[i]); var newElement = jQuery(oldElement).clone(); jQuery(oldElement).attr('id', fileId); jQuery(oldElement).before(newElement); jQuery(oldElement).appendTo(form); } //set attributes jQuery(form).css('position', 'absolute'); jQuery(form).css('top', '-1200px'); jQuery(form).css('left', '-1200px'); jQuery(form).appendTo('body'); return form; }, ajaxFileUpload: function(s) { // TODO introduce global settings, allowing the client to modify them for all requests, not only timeout s = jQuery.extend({}, jQuery.ajaxSettings, s); var id = new Date().getTime() var form = jQuery.createUploadForm(id, s.fileElementId, (typeof(s.data)=='undefined'?false:s.data)); var io = jQuery.createUploadIframe(id, s.secureuri); var frameId = 'jUploadFrame' + id; var formId = 'jUploadForm' + id; // Watch for a new set of requests if ( s.global && ! jQuery.active++ ){ jQuery.event.trigger( "ajaxStart" ); } var requestDone = false; // Create the request object var xml = {}; if ( s.global ) jQuery.event.trigger("ajaxSend", [xml, s]); // Wait for a response to come back var uploadCallback = function(isTimeout){ var io = document.getElementById(frameId); var execontent = function(){ try { if(io.contentWindow) { xml.responseText = io.contentWindow.document.body?io.contentWindow.document.body.innerHTML:null; xml.responseXML = io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document; }else if(io.contentDocument) { xml.responseText = io.contentDocument.document.body?io.contentDocument.document.body.innerHTML:null; xml.responseXML = io.contentDocument.document.XMLDocument?io.contentDocument.document.XMLDocument:io.contentDocument.document; } }catch(e) { jQuery.handleError(s, xml, null, e); } if ( xml || isTimeout == "timeout"){ requestDone = true; var status; try { status = isTimeout != "timeout" ? "success" : "error"; // Make sure that the request was successful or notmodified if ( status != "error" ) { // process the data (runs the xml through httpData regardless of callback) var data = jQuery.uploadHttpData( xml, s.dataType ); // If a local callback was specified, fire it and pass it the data if ( s.success ) s.success( data, status ); // Fire the global callback if( s.global ) jQuery.event.trigger( "ajaxSuccess", [xml, s] ); } else jQuery.handleError(s, xml, status); } catch(e) { status = "error"; jQuery.handleError(s, xml, status, e); } // The request was completed if( s.global ) jQuery.event.trigger( "ajaxComplete", [xml, s] ); // Handle the global AJAX counter if ( s.global && ! --jQuery.active ) jQuery.event.trigger( "ajaxStop" ); // Process result if ( s.complete ) s.complete(xml, status); jQuery(io).unbind(); setTimeout(function(){ try{ jQuery(io).remove(); jQuery(form).remove(); } catch(e){ jQuery.handleError(s, xml, null, e); } }, 100); xml = null; } }; execontent(); } // Timeout checker if ( s.timeout > 0 ){ setTimeout(function(){ // Check to see if the request is still happening if( !requestDone ) uploadCallback( "timeout" ); }, s.timeout); } try{ var form = jQuery('#' + formId); jQuery(form).attr('action', s.url); jQuery(form).attr('method', 'POST'); jQuery(form).attr('target', frameId); if(form.encoding) { jQuery(form).attr('encoding', 'multipart/form-data'); }else{ jQuery(form).attr('enctype', 'multipart/form-data'); } jQuery(form).submit(); } catch(e){ jQuery.handleError(s, xml, null, e); } jQuery('#' + frameId).load(uploadCallback ); return {abort: function () {}}; }, uploadHttpData: function( r, type ) { var data = !type; data = type == "xml" || data ? r.responseXML : r.responseText; // If the type is "script", eval it in global context if ( type == "script" ) jQuery.globalEval( data ); // Get the JavaScript object, if JSON is used. if ( type == "json" ) eval( "data = " + data ); // evaluate scripts within html if ( type == "html" ) jQuery("<div>").html(data).evalScripts(); return data; }, handleError: function( s, xhr, status, e ){ // If a local callback was specified, fire it if ( s.error ) { s.error.call( s.context || s, xhr, status, e ); } // Fire the global callback if ( s.global ) { (s.context ? jQuery(s.context) : jQuery.event).trigger( "ajaxError", [xhr, s, e] ); } } })阅读(1849) 分享(0)
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