public async Task <SysFile> InsertAsync(SysFile file)
{
var id = await _dg.InsertOneAsync("SaveFile", file);
file.Id = id;
return(file);
}
private SysFile BuildNew(ServerUploadRequest request)
{
var doc = new SysFile
{
Name = request.FileName,
CreateTime = DateTime.Now,
UserId = request.UserId
};
var ext = Path.GetExtension(request.FileName);
var level1Dir = doc.CreateTime.ToString("yyyyMM");
var level2Dir = doc.CreateTime.ToString("ddHH");
var docPath = $@"{this._uploadPath}\{level1Dir}\{level2Dir}";
if (!Directory.Exists(docPath))
{
Directory.CreateDirectory(docPath);
}
doc.RelativePath = $@"\{level1Dir}\{level2Dir}\{Guid.NewGuid().ToString("N")}{ext}";
doc.ContentType = IOHelper.GetContentType(request.FileName);
return(doc);
}
DownloadResult DownloadAsync(DownloadRequest request, SysFile file)
{
var result = new DownloadResult();
result.FileName = request.FileName; //wang加
var relativePath = request.ContentRef.Replace('/', '\\');
if (result.FileName.IsEmpty())
{
result.FileName = Path.GetFileName(relativePath);
}
var filePath = this._uploadPath + relativePath;
if (File.Exists(filePath))
{
result.Content = File.OpenRead(filePath);
}
else
{
throw new Exception("指定文件不存在");
}
result.ContentType = file.ContentType;
return(result);
}
/// <summary>
/// 根据指定SysFile文件实体信息下载文件，即使SysFile不在数据库中
/// </summary>
/// <param name="file">SysFile文件实体信息</param>
/// <returns>文件下载结果</returns>
public DownloadResult Download(SysFile file)
{
var result = new DownloadResult();
result.FileName = file.Name;
var relativePath = file.RelativePath;
if (result.FileName.IsEmpty())
{
result.FileName = Path.GetFileName(relativePath);
}
var filePath = this._uploadPath + relativePath;
if (File.Exists(filePath))
{
result.Content = File.OpenRead(filePath);
}
else
{
throw new Exception("指定文件不存在");
}
result.ContentType = file.ContentType;
return(result);
}
/// <summary>
/// 复制一个相同的文件信息记录，指向同一个物理文件，只是逻辑文件名不同
/// </summary>
/// <returns></returns>
public async Task <string> Duplicate(SysFile file)
{
file.Id = null;
return(await _dg.InsertOneAsync("SaveFile", file));
}