ajaxFileupload.js

jQuery.extend({

createUploadIframe: function(id, uri) { //create frame var frameId = 'jUploadFrame' + id; 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; } } } else { var io = document.createElement('iframe'); io.id = frameId; io.name = frameId; } io.style.position = 'absolute'; io.style.top = '-1000px'; io.style.left = '-1000px'; document.body.appendChild(io); return io; }, createUploadForm: function(id, fileElementId,data) { //create form var formId = 'jUploadForm' + id; var fileId = 'jUploadFile' + id; var form = $('<form action="" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>'); var oldElement = $('#' + fileElementId); if(typeof(fileElementId) == 'string'){ fileElementId = [fileElementId]; } for(var i in fileElementId){ if(!fileElementId.hasOwnProperty(i) ){ continue; } 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 if (data) { for ( var i in data) { $('<input type="hidden" name="' + i + '" value="' + data[i] + '" />').appendTo(form); } } $(form).css('position', 'absolute'); $(form).css('top', '-1200px'); $(form).css('left', '-1200px'); $(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,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); 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 { $(io).remove(); $(form).remove(); } catch(e) { jQuery.handleError(s, xml, null, e); } }, 100) xml = null } } // 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 io = $('#' + frameId); var form = $('#' + formId); $(form).attr('action', s.url); $(form).attr('method', 'POST'); $(form).attr('target', frameId); if(form.encoding) { form.encoding = 'multipart/form-data'; } else { form.enctype = 'multipart/form-data'; } $(form).submit(); } catch(e) { jQuery.handleError(s, xml, null, e); } if(window.attachEvent){ document.getElementById(frameId).attachEvent('onload', uploadCallback); } else{ document.getElementById(frameId).addEventListener('load', uploadCallback, false); } return {abort: function () {}}; }, uploadHttpData: function( r, type ) { var data = !type; data = type == "xml" || data ? r.responseXML : r.responseText; // If the type is "script", eval it in global context if ( type == "script" ) jQuery.globalEval( data ); // Get the JavaScript object, if JSON is used. if ( type == "json" ){ 以下为新增代码/// data = r.responseText; var start = data.indexOf(">"); if(start != -1) { var end = data.indexOf("<", start + 1); if(end != -1) { data = data.substring(start + 1, end); } } ///以上为新增代码/// eval( "data = " + data ); // evaluate scripts within html } if ( type == "html" ) jQuery("<div>").html(data).evalScripts(); //alert($('param', data).each(function(){alert($(this).attr('value'));})); 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] ); } }

})

demo

/**

作者：谭学锋

版权：西安优步

全局的删除文件函数

版本：1.0

日期：2018.8.31 10:22

删除附件

@param e

@param entityId

@param buttonId */

function delFjTxf(e,entityId,buttonId){ $(e).parent().parent().remove(); $("#"+buttonId).show(); nui.get(entityId).setValue(""); }

/**

作者：谭学锋

版权：西安优步

文件上传（单个文件）的通用显示和删除函数

版本：1.0

日期：2018.8.31 10:28

@param lcm 流程名

@param entityId 实体属性id

@param entityOriId 文件名属性id

@param buttonId 按钮id

@param fileId 文件域id

@param showId 显示id

@param fileNameCheckFn 文件名检查函数，参见源码中的 fileNameCheckFn,默认（undefined）全部类型，“image” ：图片。

@param noDelete true:没有删除按钮，也没有上传按钮。默认false.

@param notify 回调 function(){ } */

function uploadInitial(lcm,entityId,entityOriId,buttonId,fileId,showId,fileNameCheckFn,noDelete,notify){ noDelete=noDelete||false; if( fileNameCheckFn==“image”){ fileNameCheckFn=function(feid){ var img = document.getElementById(feid); return /.(jpg|png|gif|bmp)$/.test(img.value)?true:(function() { nui.alert(‘图片格式仅支持jpg、png、gif、bmp格式，且区分大小写。’); return false; })();

} }else if( fileNameCheckFn== "imageAndPdf"){ fileNameCheckFn=function(feid){ var img = document.getElementById(feid); return /.(jpg|png|gif|bmp|pdf)$/.test(img.value)?true:(function() { nui.alert('图片格式仅支持jpg、png、gif、bmp、pdf格式，且区分大小写。'); return false; })(); } }else if( fileNameCheckFn== undefined){ fileNameCheckFn=function(){ return true; } } function bindChange(){ $("#"+fileId).change(function(e){ ajax_upload(fileId, function(data) { data.url=data.url.replace(/\\\\/g,'/'); data.url=data.url.replace(/\\/g,'/'); data.url=basePath+"/"+data.url; var fjShow='<div class="file-item" >'+ ' <div class="hover-box"><input type="hidden" name="fj" value="'+data.url+'">'+ ' <a href="'+data.url+'" target="_Blank">'+ ' <span class="fa fa-download"></span>'+ ' </a>'+ ' <a href="javaScript:void(0)" onclick="delFjTxf(this,\''+entityId+'\',\''+buttonId+'\')">'+ ' <span class="fa fa-remove"></span>'+ ' </a>   '+data.originalname+ ' </div>'+ '</div>'; $('#'+showId).html(fjShow ); nui.get(entityId).setValue(data.url); nui.get(entityOriId).setValue(data.originalname); if(notify){ notify(); } $("#"+buttonId).hide(); }); }); } bindChange(); function ajax_upload(feid, callback) { if (fileNameCheckFn(feid)) { $.ajaxFileUpload({ fileElementId: feid, url: 'upload.jsp?lcm='+lcm, type: 'post', dataType: 'json', //服务器返回的数据类型。可以为xml,script,json,html。如果不填写，jQuery会自动判断。 secureuri: false, async : true, success: function(data) { if (callback) callback.call(this, data); $("#"+fileId).val(""); bindChange(); }, error: function(data, status, e) { $("#"+fileId).val(""); bindChange(); } }); } } //点击传递 $("#"+buttonId).click(function(){ $("#"+fileId).val(""); $("#"+fileId).trigger("click"); }); if($("#"+entityId).val()!="" && $("#"+entityId).val()!="null"){ $("#"+buttonId).hide(); var deleteHtml=' <a href="javaScript:void(0)" onclick="delFjTxf(this,\''+entityId+'\',\''+buttonId+'\')">'+ ' <span class="fa fa-remove"></span>'+ ' </a>'; if(noDelete){ deleteHtml=""; } var fjShow='<div class="file-item" >'+ ' <div class="hover-box"><input type="hidden" name="fj" value="'+$("#"+entityId).val()+'">'+ ' <a href="'+$("#"+entityId).val()+'" target="_Blank">'+ ' <span class="fa fa-download"></span>'+ ' </a>'+ deleteHtml +'   '+$("#"+entityOriId).val()+ ' </div>'+ '</div>'; $('#'+showId).html(fjShow ); } if(noDelete){ $("#"+buttonId).hide(); }

}