/// <summary>
/// 本地文件上传，秒传（根据lin_file表中的md5,与当前文件的路径是否在本地），如果不在，重新上传，覆盖文件表记录
/// </summary>
/// <param name="file"></param>
/// <param name="key"></param>
/// <returns></returns>
public async Task <FileDto> UploadAsync(IFormFile file, string type, int key = 0)
{
string md5 = HashUtil.GetHash <MD5>(file.OpenReadStream());
FileEntity fileInfo = await _fileRepo.Where(r => r.Md5 == md5 && r.Type == 1).OrderByDescending(r => r.CreateTime).FirstAsync();
if (fileInfo != null && File.Exists(Path.Combine(_hostingEnv.WebRootPath, fileInfo.Path)))//如果文件存在，则直接返回文件信息
{
return(new FileDto
{
Id = fileInfo.Id,
Key = "file_" + key,
Path = fileInfo.Path,
Url = Appsettings.FileStorage.LocalFileHost + fileInfo.Path
});
}
long id;
var(path, len) = await this.LocalUploadAsync(file, type);
if (fileInfo == null)
{
FileEntity saveLinFile = new FileEntity()
{
Extension = Path.GetExtension(file.FileName),
Md5 = md5,
Name = file.FileName,
Path = path,
Type = 1,
Size = len
};
id = (await _fileRepo.InsertAsync(saveLinFile)).Id;//插入文件数据
}
else
{
await _fileRepo.UpdateDiy.Where(a => a.Id == fileInfo.Id).Set(a => a.Path, path).ExecuteAffrowsAsync();//仅更新路径字段
id = fileInfo.Id;
}
return(new FileDto
{
Id = id,
Key = "file_" + key,
Path = path,
Url = Appsettings.FileStorage.LocalFileHost + path
});
}
