/// <summary>
/// 初始化
/// </summary>
public static void InitFtp(string ip, string user, string pwd)
{
if (!_IsFtpInit)
{
try
{
_Url = "ftp://" + ip + "/";
IP = ip;
User = user;
Pwd = pwd;
if (!Directory.Exists("./Tasks"))
{
Directory.CreateDirectory("Tasks");
}
if (!Directory.Exists("./Tasks/UploadDirectory"))
{
Directory.CreateDirectory("./Tasks/UploadDirectory");
}
if (!Directory.Exists("./Tasks/UploadFile"))
{
Directory.CreateDirectory("./Tasks/UploadFile");
}
if (!Directory.Exists("./Tasks/DownloadDirectory"))
{
Directory.CreateDirectory("./Tasks/DownloadDirectory");
}
if (!Directory.Exists("./Tasks/DownloadFile"))
{
Directory.CreateDirectory("./Tasks/DownloadFile");
}
//读取未完成的上传、下载任务列表
List <string> paths = FileHelper.GetFiles("./Tasks/UploadDirectory");
if (paths != null)
{
foreach (string item in paths)
{
FtpUploadDirectoryInfoList.Add(FileHelper.Deserialize <FileInfoEntity>(item));
}
}
paths = FileHelper.GetFiles("./Tasks/UploadFile");
if (paths != null)
{
foreach (string item in paths)
{
FtpUploadFileInfoList.Add(FileHelper.Deserialize <FileInfoEntity>(item));
}
}
paths = FileHelper.GetFiles("./Tasks/DownloadDirectory");
if (paths != null)
{
foreach (string item in paths)
{
FtpDownloadDirectoryInfoList.Add(FileHelper.Deserialize <FileInfoEntity>(item));
}
}
paths = FileHelper.GetFiles("./Tasks/DownloadFile");
if (paths != null)
{
foreach (string item in paths)
{
FtpDownloadFileInfoList.Add(FileHelper.Deserialize <FileInfoEntity>(item));
}
}
//删除过期任务
for (int i = 0; i < FtpUploadFileInfoList.Count(); i++)
{
if (FtpUploadFileInfoList[i].ResultCode == ResultCode.Failed || FtpUploadFileInfoList[i].ResultCode == ResultCode.Cancelled)
{
FileHelper.DeleteFile("./Tasks/UploadFile/" + FtpUploadFileInfoList[i].FileNo + ".dat");
FtpUploadFileInfoList.Remove(FtpUploadFileInfoList[i]);
}
}
for (int i = 0; i < FtpDownloadFileInfoList.Count(); i++)
{
if (FtpDownloadFileInfoList[i].ResultCode == ResultCode.Failed || FtpDownloadFileInfoList[i].ResultCode == ResultCode.Cancelled)
{
FileHelper.DeleteFile("./Tasks/DownloadFile/" + FtpDownloadFileInfoList[i].FileNo + ".dat");
FtpDownloadFileInfoList.Remove(FtpDownloadFileInfoList[i]);
}
}
for (int i = 0; i < FtpUploadDirectoryInfoList.Count(); i++)
{
var query = (from x in FtpUploadFileInfoList
where x.OperationNo == FtpUploadDirectoryInfoList[i].OperationNo
select x).FirstOrDefault();
if (query == null)
{
FileHelper.DeleteFile("./Tasks/UploadDirectory/" + FtpUploadDirectoryInfoList[i].FileNo + ".dat");
FtpUploadDirectoryInfoList.Remove(FtpUploadDirectoryInfoList[i]);
}
}
for (int i = 0; i < FtpDownloadDirectoryInfoList.Count(); i++)
{
var query = (from x in FtpDownloadFileInfoList
where x.OperationNo == FtpDownloadDirectoryInfoList[i].OperationNo
select x).FirstOrDefault();
if (query == null)
{
FileHelper.DeleteFile("./Tasks/DownloadDirectory/" + FtpDownloadDirectoryInfoList[i].FileNo + ".dat");
FtpDownloadDirectoryInfoList.Remove(FtpDownloadDirectoryInfoList[i]);
}
}
}
catch
{
//nothing
}
finally
{
_IsFtpInit = true;
}
}
}
/// <summary>
/// 下载
/// </summary>
private void Download(FileInfoEntity info)
{
if (info == null)
{
return;
}
try
{
//判断网络是否异常
if (!CheckLinkState(_Url))
{
info.ResultCode = ResultCode.NetworkError;
throw new Exception();
}
//判断源文件是否更新或者移除
if (!CheckExistOfRemoteFile(_Url + (info.FilePath.Trim() == "" ? "" : info.FilePath + "/") + info.FileName) || info.Length != GetRemoteFileLength(_Url + (info.FilePath.Trim() == "" ? "" : info.FilePath + "/") + info.FileName))
{
info.ResultCode = ResultCode.SourceError;
throw new Exception();
}
//判断目标目录是否被移除
if (!Directory.Exists(info.NewFilePath))
{
info.ResultCode = ResultCode.TargetError;
throw new Exception();
}
//启动上传通知事件
if (Started != null)
{
Started(this, new FileEventArgs(info, null));
}
//执行任务
InnerDownloadFile(info);
//将临时文件名改名
if (File.Exists(info.NewFilePath != "" ? info.NewFilePath + "/" + info.NewFileName : info.NewFileName))
{
info.ResultCode = ResultCode.Failed;
throw new Exception("目标目录已存在同名文件，不允许覆盖");
}
FileHelper.RenameFile((info.NewFilePath != "" ? info.NewFilePath + "/" + info.NewFileName : info.NewFileName) + ".tmp", (info.NewFilePath != "" ? info.NewFilePath + "/" + info.NewFileName : info.NewFileName));
//完成
info.ResultCode = ResultCode.Done;
info.OperationResultMessage = info.Method.ToString() + " " + info.FileType.ToString() + " " + info.ResultCode.ToString();
FileHelper.DeleteFile("./Tasks/DownloadFile/" + info.FileNo + ".dat");
FtpDownloadFileInfoList.Remove(info);
if (Done != null)
{
Done(this, new FileEventArgs(info, null));
}
}
catch
{
//任务失败
if (info.ResultCode == ResultCode.Cancelled || info.ResultCode == ResultCode.Failed || info.ResultCode == ResultCode.SourceError || info.ResultCode == ResultCode.TargetError)
{
info.OperationResultMessage = info.Method.ToString() + " " + info.FileType.ToString() + " " + info.ResultCode.ToString();
FileHelper.DeleteFile((_Info.NewFilePath == "" ? "" : _Info.NewFilePath + "/") + _Info.NewFileName + ".tmp");
FileHelper.DeleteFile("./Tasks/DownloadFile/" + info.FileNo + ".dat");
FtpHelper.FtpDownloadFileInfoList.Remove(_Info);
if (info.ResultCode == ResultCode.Cancelled)
{
if (Cancelled != null)
{
Cancelled(this, new FileEventArgs(info, new Exception(info.OperationResultMessage)
{
}));
}
}
else
{
if (Failed != null)
{
Failed(this, new FileEventArgs(info, new Exception(info.OperationResultMessage)
{
}));
}
}
}
//任务暂停
else
{
info.OperationResultMessage = info.Method.ToString() + " " + info.FileType.ToString() + " " + info.ResultCode.ToString();
if (Paused != null)
{
Paused(this, new FileEventArgs(info, new Exception(info.OperationResultMessage)
{
}));
}
}
}
finally
{
//nothing
}
}
