替换上传文件的js插件
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季圣华
282
erp_web/js/Huploadify/jquery.Huploadify.js
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282
erp_web/js/Huploadify/jquery.Huploadify.js
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(function($){
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$.fn.Huploadify = function(opts){
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var itemTemp = '<div id="${fileID}" class="uploadify-queue-item"><div class="uploadify-progress"><div class="uploadify-progress-bar"></div></div><span class="up_filename">${fileName}</span><span class="uploadbtn">上传</span><span class="delfilebtn">删除</span></div>';
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var defaults = {
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fileTypeExts:'',//允许上传的文件类型，格式'*.jpg;*.doc'
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uploader:'',//文件提交的地址
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auto:false,//是否开启自动上传
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method:'post',//发送请求的方式，get或post
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multi:false,//是否允许选择多个文件
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maxFileNumber:10, //最多能上传的文件数量
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formData:null,//发送给服务端的参数，格式：{key1:value1,key2:value2}
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fileObj:'jarFile',//在后端接受文件的参数:文件
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fileObjName:'fileName',//在后端接受文件的参数:文件名称
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fileSizeLimit:2048,//允许上传的文件大小，单位KB
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showUploadedPercent:true,//是否实时显示上传的百分比，如20%
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showUploadedSize:false,//是否实时显示已上传的文件大小，如1M/2M
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buttonText:'选择文件',//上传按钮上的文字
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removeTimeout: 1000,//上传完成后进度条的消失时间
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itemTemplate:itemTemp,//上传队列显示的模板
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onUploadStart:null,//上传开始时的动作
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onUploadSuccess:null,//上传成功的动作
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onUploadComplete:null,//上传完成的动作
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onUploadError:null, //上传失败的动作
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onInit:null,//初始化时的动作
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onCancel:null//删除掉某个文件后的回调函数，可传入参数file
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}
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var option = $.extend(defaults,opts);
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//将文件的单位由bytes转换为KB或MB，若第二个参数指定为true，则永远转换为KB
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var formatFileSize = function(size,byKB){
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if (size> 1024 * 1024&&!byKB){
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size = (Math.round(size * 100 / (1024 * 1024)) / 100).toString() + 'MB';
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}
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else{
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size = (Math.round(size * 100 / 1024) / 100).toString() + 'KB';
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}
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return size;
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}
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//根据文件序号获取文件
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var getFile = function(index,files){
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for(var i=0;i<files.length;i++){
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if(files[i].index == index){
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return files[i];
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}
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}
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return false;
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}
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//将输入的文件类型字符串转化为数组,原格式为*.jpg;*.png
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var getFileTypes = function(str){
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var result = [];
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var arr1 = str.split(";");
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for(var i=0,len=arr1.length;i<len;i++){
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result.push(arr1[i].split(".").pop());
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}
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return result;
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}
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this.each(function(){
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var _this = $(this);
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//先添加上file按钮和上传列表
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var instanceNumber = $('.uploadify').length+1;
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var inputStr = '<input id="select_btn_'+instanceNumber+'" class="selectbtn" style="display:none;" type="file" name="fileselect[]"';
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inputStr += option.multi ? ' multiple' : '';
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inputStr += ' accept="';
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inputStr += getFileTypes(option.fileTypeExts).join(",");
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inputStr += '"/>';
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inputStr += '<a id="file_upload_'+instanceNumber+'-button" href="javascript:void(0)" class="uploadify-button">';
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inputStr += option.buttonText;
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inputStr += '</a>';
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var uploadFileListStr = '<div id="file_upload_'+instanceNumber+'-queue" class="uploadify-queue"></div>';
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_this.append(inputStr+uploadFileListStr);
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//创建文件对象
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var fileObj = {
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fileInput: _this.find('.selectbtn'), //html file控件
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uploadFileList : _this.find('.uploadify-queue'),
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url: option.uploader, //ajax地址
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fileFilter: [], //过滤后的文件数组
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filter: function(files) { //选择文件组的过滤方法
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var arr = [];
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if(this.uploadFileList.find('.uploadify-queue-item:visible').length>=option.maxFileNumber) {
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alert('只能上传' + option.maxFileNumber + '个文件！');
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} else {
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var typeArray = getFileTypes(option.fileTypeExts);
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if(typeArray.length>0){
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for(var i=0,len=files.length;i<len;i++){
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var thisFile = files[i];
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if(parseInt(formatFileSize(thisFile.size,true))>option.fileSizeLimit){
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alert('文件'+thisFile.name+'大小超出限制！');
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continue;
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}
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if($.inArray(thisFile.name.split('.').pop(),typeArray)>=0){
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arr.push(thisFile);
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}
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else{
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alert('文件'+thisFile.name+'类型不允许！');
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}
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}
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}
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}
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return arr;
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},
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//文件选择后
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onSelect: function(files){
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for(var i=0,len=files.length;i<len;i++){
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var file = files[i];
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//处理模板中使用的变量
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var $html = $(option.itemTemplate.replace(/\${fileID}/g,'fileupload_'+instanceNumber+'_'+file.index).replace(/\${fileName}/g,file.name).replace(/\${fileSize}/g,formatFileSize(file.size)).replace(/\${instanceID}/g,_this.attr('id')));
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//如果是自动上传，去掉上传按钮
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if(option.auto){
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$html.find('.uploadbtn').remove();
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}
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this.uploadFileList.append($html);
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//判断是否显示已上传文件大小
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if(option.showUploadedSize){
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var num = '<span class="progressnum"><span class="uploadedsize">0KB</span>/<span class="totalsize">${fileSize}</span></span>'.replace(/\${fileSize}/g,formatFileSize(file.size));
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$html.find('.uploadify-progress').after(num);
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}
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//判断是否显示上传百分比
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if(option.showUploadedPercent){
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var percentText = '<span class="up_percent">0%</span>';
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$html.find('.uploadify-progress').after(percentText);
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}
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//判断是否是自动上传
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if(option.auto){
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this.funUploadFile(file);
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}
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else{
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//如果配置非自动上传，绑定上传事件
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$html.find('.uploadbtn').on('click',(function(file){
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return function(){fileObj.funUploadFile(file);}
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})(file));
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}
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//为删除文件按钮绑定删除文件事件
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$html.find('.delfilebtn').on('click',(function(file){
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return function(){fileObj.funDeleteFile(file.index);}
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})(file));
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}
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},
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onProgress: function(file, loaded, total) {
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var eleProgress = _this.find('#fileupload_'+instanceNumber+'_'+file.index+' .uploadify-progress');
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var percent = (loaded / total * 100).toFixed(2) +'%';
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if(option.showUploadedSize){
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eleProgress.nextAll('.progressnum .uploadedsize').text(formatFileSize(loaded));
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eleProgress.nextAll('.progressnum .totalsize').text(formatFileSize(total));
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}
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if(option.showUploadedPercent){
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eleProgress.nextAll('.up_percent').text(percent);
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}
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eleProgress.children('.uploadify-progress-bar').css('width',percent);
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}, //文件上传进度
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/* 开发参数和内置方法分界线 */
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//获取选择文件，file控件
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funGetFiles: function(e) {
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// 获取文件列表对象
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var files = e.target.files;
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//继续添加文件
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files = this.filter(files);
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for(var i=0,len=files.length;i<len;i++){
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this.fileFilter.push(files[i]);
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}
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this.funDealFiles(files);
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return this;
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},
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//选中文件的处理与回调
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funDealFiles: function(files) {
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var fileCount = _this.find('.uploadify-queue .uploadify-queue-item').length;//队列中已经有的文件个数
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for(var i=0,len=files.length;i<len;i++){
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files[i].index = ++fileCount;
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files[i].id = files[i].index;
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}
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//执行选择回调
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this.onSelect(files);
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return this;
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},
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//删除对应的文件
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funDeleteFile: function(index) {
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for (var i = 0,len=this.fileFilter.length; i<len; i++) {
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var file = this.fileFilter[i];
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if (file.index == index) {
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this.fileFilter.splice(i,1);
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_this.find('#fileupload_'+instanceNumber+'_'+index).fadeOut();
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option.onCancel&&option.onCancel(file);
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break;
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}
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}
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return this;
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},
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//文件上传
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funUploadFile: function(file) {
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var xhr = false;
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try{
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xhr=new XMLHttpRequest();//尝试创建 XMLHttpRequest 对象，除 IE 外的浏览器都支持这个方法。
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}catch(e){
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xhr=ActiveXobject("Msxml12.XMLHTTP");//使用较新版本的 IE 创建 IE 兼容的对象（Msxml2.XMLHTTP）。
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}
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if (xhr.upload) {
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// 上传中
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xhr.upload.addEventListener("progress", function(e) {
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fileObj.onProgress(file, e.loaded, e.total);
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}, false);
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// 文件上传成功或是失败
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xhr.onreadystatechange = function(e) {
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if (xhr.readyState == 4) {
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if (xhr.status == 200) {
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//校正进度条和上传比例的误差
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var thisfile = _this.find('#fileupload_'+instanceNumber+'_'+file.index);
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thisfile.find('.uploadify-progress-bar').css('width','100%');
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option.showUploadedSize&&thisfile.find('.uploadedsize').text(thisfile.find('.totalsize').text());
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option.showUploadedPercent&&thisfile.find('.up_percent').text('100%');
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option.onUploadSuccess&&option.onUploadSuccess(file, xhr.responseText);
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//在指定的间隔时间后删掉进度条
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setTimeout(function(){
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_this.find('#fileupload_'+instanceNumber+'_'+file.index).fadeOut();
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},option.removeTimeout);
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} else {
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option.onUploadError&&option.onUploadError(file, xhr.responseText);
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}
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option.onUploadComplete&&option.onUploadComplete(file,xhr.responseText);
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//清除文件选择框中的已有值
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fileObj.fileInput.val('');
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}
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};
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option.onUploadStart&&option.onUploadStart();
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// 开始上传
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xhr.open(option.method, this.url, true);
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xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
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var fd = new FormData();
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fd.append(option.fileObj, file);
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fd.append(option.fileObjName, file.name);
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if(option.formData){
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for(key in option.formData){
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fd.append(key,option.formData[key]);
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}
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}
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xhr.send(fd);
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}
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},
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init: function() {
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//文件选择控件选择
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if (this.fileInput.length>0) {
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this.fileInput.change(function(e) {
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fileObj.funGetFiles(e);
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});
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}
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//点击上传按钮时触发file的click事件
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_this.find('.uploadify-button').on('click',function(){
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_this.find('.selectbtn').trigger('click');
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});
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option.onInit&&option.onInit();
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}
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};
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//初始化文件对象
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fileObj.init();
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});
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}
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})(jQuery)
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