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));
}
