/// <summary>
/// 下载文件
/// </summary>
/// <returns></returns>
public string Opt_DownloadFile()
{
if (!IsAdmin)
{
return("没有权限");
}
string BackupName = Request["BackupName"];
var backupItem = SMOHelper.GetBackups().First(item => item.IsDeleted == false && item.BackupName == BackupName);
if (backupItem == null || !File.Exists(backupItem.BackupFullPath))
{
return("参数异常");
}
using (FileStream fs = new FileStream(backupItem.BackupFullPath, FileMode.Open))
{
const long ChunkSize = 102400;//100K 每次读取文件，只读取100Ｋ，这样可以缓解服务器的压力
byte[] buffer = new byte[ChunkSize];
long dataLengthToRead = fs.Length;//获取下载的文件总大小
Response.ContentType = "application/octet-stream";
Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(BackupName + ".bak"));
while (dataLengthToRead > 0 && Response.IsClientConnected)
{
int lengthRead = fs.Read(buffer, 0, Convert.ToInt32(ChunkSize));//读取的大小
Response.OutputStream.Write(buffer, 0, lengthRead);
Response.Flush();
dataLengthToRead = dataLengthToRead - lengthRead;
}
}
return("");
}
public string Opt_GetList()
{
var backups = SMOHelper.GetBackups();
totalCount = backups.Count();
int idx = 0;
var list = backups.Skip((PageIndex - 1) * PageSize).Take(PageSize).Select(item => new
{
ID = ++idx,
BackupName = item.BackupName,
BackupTime = item.BackupTime.ToString("yyyy-MM-dd HH:mm:ss.fff"),
Size = item.GetSizeStr(),
Remark = item.Remark
});
return(JavaScriptConvert.SerializeObject(new { PageData = list.ToList(), TotalPage = TotalPage() }));
}
protected override void SetPowerZone()
{
BackupItems = SMOHelper.GetBackups();
}
