/// <summary>根据FileID获得相关文件流, wang加</summary>
public async Task <DownloadResult> DownloadAsync(string id)
{
var result = new DownloadResult();
var file = await _fileMan.GetByIdAsync(id);
if (file == null)
{
throw new Exception("指定文件不存在");
}
return(Download(file));
}
/// <summary>根据FileID获得相关文件流, wang加</summary>
public async Task <DownloadResult> DownloadAsync(string id)
{
var result = new DownloadResult();
DownloadRequest request = new DownloadRequest();
var file = await _fileMan.GetByIdAsync(id);
if (file == null)
{
throw new Exception("指定文件不存在");
}
request.FileName = file.Name;
request.ContentRef = file.RelativePath;
return(DownloadAsync(request, file));
}
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);
}