public IActionResult UploadAttachment([FromForm] FileChunksModel model)
{
if (model.file == null)
{
return(BadRequest());
}
if (model.chunked)
{
//var file = Request.Form.Files[0];
var file = model.file;
//取得chunk和chunks
int chunk = Convert.ToInt32(Request.Form["chunk"]); //当前分片在上传分片中的顺序（从0开始）
int chunks = Convert.ToInt32(Request.Form["chunks"]); //总分片数
var folder = Path.Combine(_hostingEnvironment.WebRootPath, "chunk\\" + Request.Form["uid"] + "\\");
string path = folder + chunk;
//建立临时传输文件夹
if (!Directory.Exists(Path.GetDirectoryName(folder)))
{
Directory.CreateDirectory(folder);
}
FileStream addFile = null;
BinaryWriter AddWriter = null;
Stream stream = null;
BinaryReader TempReader = null;
try
{
//addFile = new FileStream(path, FileMode.Append, FileAccess.Write);
addFile = new FileStream(path, FileMode.Create, FileAccess.Write);
AddWriter = new BinaryWriter(addFile);
//获得上传的分片数据流
stream = model.file.OpenReadStream();
TempReader = new BinaryReader(stream);
//将上传的分片追加到临时文件末尾
AddWriter.Write(TempReader.ReadBytes((int)stream.Length));
}
finally
{
if (addFile != null)
{
addFile.Close();
addFile.Dispose();
}
if (AddWriter != null)
{
AddWriter.Close();
AddWriter.Dispose();
}
if (stream != null)
{
stream.Close();
stream.Dispose();
}
if (TempReader != null)
{
TempReader.Close();
TempReader.Dispose();
}
}
return(Ok(new { nextchunk = chunk + 1 }));
}
else
{
// 文件大小
long size = 0;
//var file = Request.Form.Files[0];
var filename = ContentDispositionHeaderValue.Parse(model.file.ContentDisposition).FileName;
// 扩展名
var extName = filename.Substring(filename.LastIndexOf('.')).Replace("\"", "");
// 新文件名
string shortfilename = $"{Guid.NewGuid()}{extName}";
var filePath = Path.Combine(_hostingEnvironment.WebRootPath, shortfilename);
//保存到绝对路径
// 设置文件大小
size += model.file.Length;
// 创建新文件
using (FileStream fs = System.IO.File.Create(filePath))
{
// 复制文件
model.file.CopyTo(fs);
// 清空缓冲区数据
fs.Flush();
}
return(Ok("上传完成！"));
}
}
