1.修改上传组件js(没测)
https://blog.csdn.net/weixin_42457316/article/details/81017471
https://www.cnblogs.com/youmingkuang/p/9183528.html
https://fly.layui.com/jie/19430/
1、upload.js 扩展
功能利用ajax的xhr属性实现
该功能修改过modules中的upload.js文件
功能具体实现：
在js文件中添加监听函数
???//创建监听函数 ????var xhrOnProgress=function(fun) { ???????xhrOnProgress.onprogress = fun; //绑定监听 ????????//使用闭包实现监听绑 ???????return function() { ???????????//通过$.ajaxSettings.xhr();获得XMLHttpRequest对象 ???????????var xhr = $.ajaxSettings.xhr(); ????????????//判断监听函数是否为函数 ?????????????if (typeof xhrOnProgress.onprogress !== ‘function‘) ??????????????????return xhr; ??????????????//如果有监听函数并且xhr对象支持绑定时就把监听函数绑定上去 ???????????????if (xhrOnProgress.onprogress && xhr.upload) { ?????????????????????xhr.upload.onprogress = xhrOnProgress.onprogress; ???????????????} ???????????????return xhr; ????????} ????}初始化上传
//初始化上传 upload.render({ ????elem: ‘上传地址‘ ????,url: path+‘/upload/uploadVideo.do‘ ????,accept: ‘video‘ ???,size: 512000 ???,auto:false ???,xhr:xhrOnProgress ???,progress:function(value){//上传进度回调 value进度值 ???????element.progress(‘demo‘, value+‘%‘)//设置页面进度条 ????} ???,bindAction:‘#uploadvideo‘ ????,before: function(input){ ???//返回的参数item，即为当前的input DOM对象 ???????console.log(‘文件上传中‘); ???} ???,done: function(res){ ????????????//上传成功 ??????????console.log(res) ????} });修改modules中upload.js文件的ajax方法
//提交文件 ???????$.ajax({ ?????????url: options.url ?????????,type: options.method ?????????,data: formData ?????????,contentType: false ??????????,processData: false ?????????,dataType: ‘json‘ ?????????,xhr:options.xhr(function(e){//此处为新添加功能 ???????????????var percent=Math.floor((e.loaded / e.total)*100);//计算百分比 ???????????????options.progress(percent);//回调将数值返回 ??????????}) ?????????,success: function(res){ ???????????successful++; ???????????done(index, res); ???????????allDone(); ?????????} ?????????,error: function(e){ ????????????console.log(e) ???????????aborted++; ???????????that.msg(‘请求上传接口出现异常‘); ???????????error(index); ???????????allDone(); ?????????} ???????});后台代码：
???????public ActionResult UploadFiles(HttpPostedFileBase fileNames) ???????{ ???????????string path = ""; ???????????//小于20M ???????????if (fileNames.ContentLength > 0 && fileNames.ContentLength <= 120971520) ???????????{ ???????????????var fileName = Path.GetFileName(fileNames.FileName); ???????????????string q_FN = fileName.Substring(0, fileName.LastIndexOf(".")); ???????????????string h_FN = fileName.Substring(fileName.LastIndexOf(".")); ???????????????string NewFileName = q_FN + DateTime.Now.ToString("yyyyMMddHHmmss") + h_FN; ???????????????path = Path.Combine(Server.MapPath("/Uploadfile/"), NewFileName); ???????????????fileNames.SaveAs(path); ???????????????path = "/Uploadfile/" + NewFileName; ???????????????var relt = new { tc = path }; ???????????????return Content(JsonConvert.SerializeObject(relt)); ???????????} ???????????else ???????????{ ???????????????var relt = new { tc = "上传文件要小于20M" }; ???????????????return Content(JsonConvert.SerializeObject(relt)); ???????????} ???????}功能到此结束！！！
列子截图：
2.模拟一个假的进度条
https://blog.csdn.net/lin452473623/article/details/80784717
layui.use([‘upload‘,‘element‘,‘layer‘], function(){var upload = layui.upload,element = layui.element,layer = layui.layer;var timer;//定义一个计时器//选完文件后不自动上传upload.render({ ???elem: ‘#test8‘ ???,url: ‘upload‘ ???,async: false ???,method: ‘post‘ ???,data: { ???????upgradeType: function(){ ???return $("input[name=‘upgradeType‘]:checked").val();//额外传递的参数 ???????} ???} ???,auto: false ???,accept: ‘file‘ //普通文件 ???,exts: ‘zip‘ //只允许上传压缩文件 ???,field:‘uploadFile‘ ???,bindAction: ‘#test9‘ ???,choose: function(obj){//这里的作用是截取上传文件名称并显示var uploadFileInput=$(".layui-upload-file").val();var uploadFileName=uploadFileInput.split("\\");$("#uploadName").text(uploadFileName[uploadFileName.length-1]); ???} ???,before: function(obj){ //obj参数包含的信息，跟choose回调完全一致layer.load(); //上传loadingvar n = 0; timer = setInterval(function(){//按照时间随机生成一个小于95的进度，具体数值可以自己调整 ???n = n + Math.random()*10|0; ?????if(n>95){n = 95;clearInterval(timer); ???} ???element.progress(‘demo‘, n+‘%‘);}, 50+Math.random()*100); ???} ???,done: function(res){clearInterval(timer);element.progress(‘demo‘, ‘100%‘);//一成功就把进度条置为100%layer.closeAll(); layer.msg(‘上传成功‘);} ???,error: function(index, upload){element.progress(‘demo‘, ‘0%‘);layer.closeAll(); //关闭所有层layer.msg(‘上传更新包失败‘); ???}});});
参考：https://www.layui.com/doc/modules/upload.html
layui文件上传进度条（模拟）
原文地址：https://www.cnblogs.com/liuqiyun/p/9517646.html