public async Task <JsonResult> AjaxFileUp() { var data = new MoData { Msg = "上传失败" }; try { var files = Request.Form.Files.Where(b => b.Name == "MyPhoto01"); //非空限制 if (files == null || files.Count() <= 0) { data.Msg = "请选择上传的文件。"; return(Json(data)); } //格式限制 var allowType = new string[] { "image/jpeg", "image/png" }; if (files.Any(b => !allowType.Contains(b.ContentType))) { data.Msg = $"只能上传{string.Join(",", allowType)}格式的文件。"; return(Json(data)); } //大小限制 if (files.Sum(b => b.Length) >= 1024 * 1024 * 4) { data.Msg = "上传文件的总大小只能在4M以下。"; return(Json(data)); } //写入服务器磁盘 foreach (var file in files) { var fileName = file.FileName; var webroot = _hostingEnvironment.WebRootPath + "\\images\\"; var path = Path.Combine(webroot, fileName); using (var stream = System.IO.File.Create(path)) { await file.CopyToAsync(stream); } } data.Msg = "上传成功"; data.Status = 2; } catch (Exception ex) { data.Msg = ex.Message; } return(Json(data)); }
public JsonResult AjaxFileUp03() { var data = new MoData { Msg = "上传失败" }; try { var files = Request.Form.Files.Where(b => b.Name == "MyPhoto03"); //非空限制 if (files == null || files.Count() <= 0) { data.Msg = "请选择上传的文件。"; return(Json(data)); } //格式限制 var allowType = new string[] { "image/jpeg", "image/png" }; if (files.Any(b => !allowType.Contains(b.ContentType))) { data.Msg = $"只能上传{string.Join(",", allowType)}格式的文件。"; return(Json(data)); } //大小限制 if (files.Sum(b => b.Length) >= 1024 * 1024 * 4) { data.Msg = "上传文件的总大小只能在4M以下。"; return(Json(data)); } //初始化上传多个文件的Bar,存储到缓存中,方便获取上传进度 var listBar = new List <MoBar>(); files.ToList().ForEach(b => { listBar.Add(new MoBar { FileName = b.FileName, Status = 1, CurrBar = 0, TotalBar = b.Length }); }); _cache.Set <List <MoBar> >(cacheKey03, listBar); var len = files.Count(); Task[] tasks = new Task[len]; //写入服务器磁盘 for (int i = 0; i < len; i++) { var file = files.Skip(i).Take(1).SingleOrDefault(); tasks[i] = Task.Factory.StartNew((p) => { var item = p as IFormFile; //总大小 var totalSize = item.Length; //初始化每次读取大小 var readSize = 1024L; var bt = new byte[totalSize > readSize ? readSize : totalSize]; //当前已经读取的大小 var currentSize = 0L; var fileName = item.FileName; var webroot = _hostingEnvironment.WebRootPath + "\\images\\"; var path = Path.Combine(webroot, fileName); using (var stream = System.IO.File.Create(path)) { //进度条处理流程 using (var inputStream = item.OpenReadStream()) { //读取上传文件流 while (inputStream.Read(bt, 0, bt.Length) > 0) { //当前读取的长度 currentSize += bt.Length; //写入上传流到服务器文件中 stream.Write(bt, 0, bt.Length); //获取每次读取的大小 readSize = currentSize + readSize <= totalSize ? readSize : totalSize - currentSize; //重新设置 bt = new byte[readSize]; //设置当前上传的文件进度,并重新缓存到进度缓存中 var bars = _cache.Get <List <MoBar> >(cacheKey03); var currBar = bars.Where(b => b.FileName == fileName).SingleOrDefault(); currBar.CurrBar = currentSize; currBar.Status = currentSize >= totalSize ? 2 : 1; _cache.Set <List <MoBar> >(cacheKey03, bars); System.Threading.Thread.Sleep(200 * 1); } } } }, file); } //任务等待 ,这里必须等待,不然会丢失上传文件流 Task.WaitAll(tasks); data.Msg = "上传完成"; data.Status = 2; } catch (Exception ex) { data.Msg = ex.Message; } return(Json(data)); }
public async Task <JsonResult> AjaxFileUp02() { var data = new MoData { Msg = "上传失败" }; try { var files = Request.Form.Files.Where(b => b.Name == "MyPhoto02"); //非空限制 if (files == null || files.Count() <= 0) { data.Msg = "请选择上传的文件。"; return(Json(data)); } //格式限制 var allowType = new string[] { "image/jpeg", "image/png" }; if (files.Any(b => !allowType.Contains(b.ContentType))) { data.Msg = $"只能上传{string.Join(",", allowType)}格式的文件。"; return(Json(data)); } //大小限制 if (files.Sum(b => b.Length) >= 1024 * 1024 * 4) { data.Msg = "上传文件的总大小只能在4M以下。"; return(Json(data)); } //初始化上传多个文件的Bar,存储到缓存中,方便获取上传进度 var listBar = new List <MoBar>(); files.ToList().ForEach(b => { listBar.Add(new MoBar { FileName = b.FileName, Status = 1, CurrBar = 0, TotalBar = b.Length }); }); _cache.Set <List <MoBar> >(cacheKey, listBar); //写入服务器磁盘 foreach (var file in files) { //总大小 var totalSize = file.Length; //初始化每次读取大小 var readSize = 1024L; var bt = new byte[totalSize > readSize ? readSize : totalSize]; //当前已经读取的大小 var currentSize = 0L; var fileName = file.FileName; var webroot = _hostingEnvironment.WebRootPath + "\\images\\"; var path = Path.Combine(webroot, fileName); using (var stream = System.IO.File.Create(path)) { //await file.CopyToAsync(stream); //进度条处理流程 using (var inputStream = file.OpenReadStream()) { //读取上传文件流 while (await inputStream.ReadAsync(bt, 0, bt.Length) > 0) { //当前读取的长度 currentSize += bt.Length; //写入上传流到服务器文件中 await stream.WriteAsync(bt, 0, bt.Length); //获取每次读取的大小 readSize = currentSize + readSize <= totalSize ? readSize : totalSize - currentSize; //重新设置 bt = new byte[readSize]; //设置当前上传的文件进度,并重新缓存到进度缓存中 var bars = _cache.Get <List <MoBar> >(cacheKey); var currBar = bars.Where(b => b.FileName == fileName).SingleOrDefault(); currBar.CurrBar = currentSize; currBar.Status = currentSize >= totalSize ? 2 : 1; _cache.Set <List <MoBar> >(cacheKey, bars); System.Threading.Thread.Sleep(100 * 1); } } } } data.Msg = "上传完成"; data.Status = 2; } catch (Exception ex) { data.Msg = ex.Message; } return(Json(data)); }