public DTOBackFileSection SectionDownloadUpgradeExe([FromBody] DTOUpgradeFileSectDownload dto)
{
string fileFullName = Environment.CurrentDirectory + "/LocalFile/UpgradeExe/UpgradeApp.zip";
if (System.IO.File.Exists(fileFullName))
{
using (FileStream fs = System.IO.File.OpenRead(fileFullName))
{
DTOBackFileSection result = new DTOBackFileSection();
fs.Position = dto.CurrPosition;
result.CurrPosition = dto.CurrPosition;
result.FileName = System.IO.Path.GetFileName(fs.Name);
result.FileSize = fs.Length;
result.FileBuffer = new byte[dto.CurrSize];
result.CurrSize = fs.Read(result.FileBuffer, 0, dto.CurrSize);
return(result);
}
}
else
{
throw new Exception("未找到升级程序");
}
}
public DTOBackFileSection SectionDownloadUpgradeBag([FromBody] DTOUpgradeFileSectDownload dto)
{
//缓存
string bytesKey = "UpgradeBag_" + dto.VersionId.ToString().ToUpper();
string nameKey = "UpgradeBagName_" + dto.VersionId.ToString().ToUpper();
List <byte> bytes = _cache.Get <List <byte> >(bytesKey);
if (bytes == null)
{
Prc_VersionInfo versionInfo;
Repository <Prc_VersionInfo> repository = new Repository <Prc_VersionInfo>(DbContext);
versionInfo = repository.Get(a => a.ID == dto.VersionId);
if (versionInfo == null)
{
throw new Exception("未找到版本信息");
}
string fileFullName = Environment.CurrentDirectory + "/LocalFile/UpgradeBag/" + versionInfo.UpgradeBagName;
if (!System.IO.File.Exists(fileFullName))
{
throw new Exception("未找到文件");
}
//using ()
using (FileStream fs = System.IO.File.OpenRead(fileFullName))
{
byte[] bs = new byte[fs.Length];
fs.Read(bs, 0, bs.Length);
bytes = bs.ToList();
//写入字节数组
_cache.GetOrCreate(bytesKey, entry =>
{
entry.SetSlidingExpiration(TimeSpan.FromHours(1));
return(bytes);
});
}
}
string fileName = _cache.Get <string>(nameKey);
if (fileName == null)
{
Prc_VersionInfo versionInfo;
Repository <Prc_VersionInfo> repository = new Repository <Prc_VersionInfo>(DbContext);
versionInfo = repository.Get(a => a.ID == dto.VersionId);
if (versionInfo == null)
{
throw new Exception("未找到版本信息");
}
fileName = versionInfo.UpgradeBagName;
_cache.GetOrCreate(nameKey, entry =>
{
entry.SetSlidingExpiration(TimeSpan.FromHours(1));
return(fileName);
});
}
DTOBackFileSection result = new DTOBackFileSection();
//fs.Position = dto.CurrPosition;
result.CurrPosition = dto.CurrPosition;
result.FileName = fileName;
result.FileSize = bytes.Count;
if (bytes.Count <= dto.CurrPosition)
{
result.CurrSize = 0;
result.FileBuffer = new byte[] { };
}
else
{
if (bytes.Count <= dto.CurrPosition + dto.CurrSize)
{
result.FileBuffer = bytes.GetRange((int)dto.CurrPosition, (int)(bytes.Count - dto.CurrPosition)).ToArray();
result.CurrSize = (int)(bytes.Count - dto.CurrPosition);
}
else
{
result.FileBuffer = bytes.GetRange((int)dto.CurrPosition, dto.CurrSize).ToArray();
result.CurrSize = dto.CurrSize;
}
}
return(result);
}
