AjaxFileUploader上传插件（一般上传）
转载自：http://www.cnblogs.com/zengxiangzhan/archive/2012/02/12/2348547.html
AjaxFileUploader上传插件 兼容性好 Ie Chrome Firefox
html:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> <script src="js/jquery-1.7.1.min.js" type="text/javascript"></script> <script src="js/ajaxfileupload.js" type="text/javascript"></script> </head> <body> <form id="form1" runat="server"> <div> <input id="fileToUpload" type="file" size="45" name="fileToUpload" class="input" /> <button id="buttonUpload" onclick="return ajaxFileUpload();"> 上传</button> <img id="loading" src="/images/loading.gif" style="display: none;" /> <div id="imgshow" style="display: none;"> </div> </div> </form> <script type="text/javascript"> function ajaxFileUpload() { $("#loading") .ajaxStart(function () { $(this).show(); }) .ajaxComplete(function () { $(this).hide(); }); $.ajaxFileUpload( { url: '/ajax/AjaxFileUploader.ashx', secureuri: false, fileElementId: 'fileToUpload', dataType: 'json', data: { name: 'logan', id: 'id' }, success: function (data, status) { if (typeof (data.error) !== 'undefined') { if (data.error !== '') { alert(data.error); } else { // alert(data.msg); $('#imgshow').show(); $('#imgshow').append("<img src='/Temp/" + data.msg + "' width='100' height='60' />"); } } }, error: function (data, status, e) { alert(e); } } ) return false; } </script> </body> </html>
服务端:
using System.Web; using System.IO; namespace AjaxFileUploader.ajax { /// <summary> /// AjaxFileUploader 的摘要说明 /// </summary> public class AjaxFileUploader : IHttpHandler { public void ProcessRequest(HttpContext context) { if (context.Request.Files.Count > 0) { string path = context.Server.MapPath("~/Temp"); if (!Directory.Exists(path)) Directory.CreateDirectory(path); var file = context.Request.Files[0]; string fileName; if (HttpContext.Current.Request.Browser.Browser.ToUpper() == "IE") { string[] files = file.FileName.Split(new char[] { '\\' }); fileName = files[files.Length - 1]; } else { fileName = file.FileName; } string msg = ""; string strFileName = fileName; if (string.IsNullOrEmpty(strFileName)) { msg = "{"; msg += string.Format("error:'{0}',\n", "请选择文件！"); msg += string.Format("msg:'{0}'\n", string.Empty); msg += "}"; } else { fileName = Path.Combine(path, fileName); file.SaveAs(fileName); msg = "{"; msg += string.Format("error:'{0}',\n", string.Empty); msg += string.Format("msg:'{0}'\n", strFileName); msg += "}"; } context.Response.Write(msg); } } public bool IsReusable { get { return true; } } } }
插件:
//ajaxfileupload.js jQuery.extend({ createUploadIframe: function (id, uri) { //创建 frame var frameId = 'jUploadFrame' + id; var iframeHtml = '<iframe id="' + frameId + '" name="' + frameId + '" style="position:absolute; top:-9999px; left:-9999px"'; if (window.ActiveXObject) { if (typeof uri == 'boolean') { iframeHtml += ' src="' + 'javascript:false' + '"'; } else if (typeof uri == 'string') { iframeHtml += ' src="' + uri + '"'; } } iframeHtml += ' />'; jQuery(iframeHtml).appendTo(document.body); return jQuery('#' + frameId).get(0); }, createUploadForm: function (id, fileElementId, data) { //创建 frame 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); } } var oldElement = jQuery('#' + fileElementId); var newElement = jQuery(oldElement).clone(); jQuery(oldElement).attr('id', fileId); jQuery(oldElement).before(newElement); jQuery(oldElement).appendTo(form); //设置属性 jQuery(form).css('position', 'absolute'); jQuery(form).css('top', '-1200px'); jQuery(form).css('left', '-1200px'); jQuery(form).appendTo('body'); return form; }, ajaxFileUpload: function (s) { 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; // 监控请求 if (s.global && !jQuery.active++) { jQuery.event.trigger("ajaxStart"); } var requestDone = false; // 创建请求对象 var xml = {} if (s.global) jQuery.event.trigger("ajaxSend", [xml, s]); //等待一个响应返回 var uploadCallback = function (isTimeout) { var io = document.getElementById(frameId); 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"; //请求成功 if (status != "error") { // 处理数据 var data = jQuery.uploadHttpData(xml, s.dataType); if (s.success) s.success(data, status); // 触发全局返回 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); } // 请求完成 if (s.global) jQuery.event.trigger("ajaxComplete", [xml, s]); // 处理全局AJAX计数器 if (s.global && ! --jQuery.active) jQuery.event.trigger("ajaxStop"); // 处理结果 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 } } // 超时检查 if (s.timeout > 0) { setTimeout(function () { 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 (type == "script") jQuery.globalEval(data); if (type == "json") eval("data = " + data); if (type == "html") jQuery("<div>").html(data).evalScripts(); return data; } })
