В прошлом посте про мультипоточную загрузку я столкнулся с некорректной индикацией процесса загрузки на сервер. Сама загрузка работала для нескольких файлов. А вот визуализация только для 1 файла. Поэтому, приходилось выкручиваться с таймерами. И я бы оставил этот вопрос, если бы не наткнулся на вот это обсуждение на stackoverflow, в котором указывалась ссылка на интересный ресурс про активный и пассивный режимы FTP протокола.
Я немного переделал код, и у меня получилась следующая картина
Весь секрет был в одной строчке…
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fidFTP.Passive:=true; // <<Секрет успешной мультизагрузки... |
После этого данные стали поступать в процедурах Work и WorkBegin.
Код потока передачи данных стал следующим
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unit uPSFTPUploadThread; interface uses uPSMultiUploadForm,ShellApi, Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs,syncobjs,uVisualFrame_PSFTPClient, //idFTP IdBaseComponent, IdComponent,IdException, IdTCPConnection, IdTCPClient, IdExplicitTLSClientServerBase, IdFTP, Vcl.StdCtrls,uPSFTPUploadFrame,IdFTPCommon; type TFTPUploadThread = class(TThread) private { Private declarations } fidFTP:TIdFTP; FSourceFileName:string; FFileSize:Int64; FFileSizeString: string; FIndexInUploadProgressList:integer; FFTPClient:TVisualFrame; FDestFileName:string; FCriticalSection:TCriticalSection; procedure IdFTPAfterPut(Sender: TObject); procedure IdFTPWorkBegin(ASender: TObject; AWorkMode: TWorkMode; AWorkCountMax: Int64); procedure IdFTPWork(ASender: TObject; AWorkMode: TWorkMode; AWorkCount: Int64); procedure IdFTPStatus(ASender: TObject; const AStatus: TIdStatus; const AStatusText: string); procedure IdFTPWorkEnd(ASender: TObject; AWorkMode: TWorkMode); function FindIndex: integer; public property FTPClient:TVisualFrame read FFTPClient write FFTPClient; property idFTP:TIdFTP read fidFTP write fidFTP; property FileSize:Int64 read FFileSize write FFileSize; property FileSizeString: string read FFileSizeString write FFileSizeString; property IndexInUploadProgressList:Integer read FIndexInUploadProgressList write FIndexInUploadProgressList; property CriticalSection:TCriticalSection read FCriticalSection write FCriticalSection; property SourceFileName:string read FSourceFileName write FSourceFileName; property DestFileName:string read FDestFileName write FDestFileName; protected procedure Execute; override; end; implementation { Important: Methods and properties of objects in visual components can only be used in a method called using Synchronize, for example, Synchronize(UpdateCaption); and UpdateCaption could look like, procedure TFTPUploadThread.UpdateCaption; begin Form1.Caption := 'Updated in a thread'; end; or Synchronize( procedure begin Form1.Caption := 'Updated in thread via an anonymous method' end ) ); where an anonymous method is passed. Similarly, the developer can call the Queue method with similar parameters as above, instead passing another TThread class as the first parameter, putting the calling thread in a queue with the other thread. } { TFTPUploadThread } procedure TFTPUploadThread.Execute; var i: integer; begin fidFTP:=TIdFTP.Create(nil); //Присваиваем события компоненту fidFTP fidFTP.OnAfterPut:=IdFTPAfterPut; fidFTP.OnWorkBegin:=IdFTPWorkBegin; fidFTP.OnWork:=IdFTPWork; fidFTP.OnStatus:=IdFTPStatus; fidFTP.OnWorkEnd:=IdFTPWorkEnd; fidFTP.Host:=FTPClient.FTPParams.Host;// 'localhost'; fidFTP.Port:=FTPClient.FTPParams.Port;// 22; fidFTP.Username:=FTPClient.FTPParams.Username; //'Login'; fidFTP.Password:=FTPClient.FTPParams.Password; //'Password'; fidFTP.Passive:=true; // <<Секрет успешной мультизагрузки... if not fidFTP.Connected then fidFTP.Connect; if not fidFTP.Connected then Exit; CriticalSection:=TCriticalSection.Create; CriticalSection.Enter; if FTPClient=nil then Exit; if SourceFileName='' then exit; try with FTPClient do begin //Enabled:=false; // <<<Блокировка формы PutThreadsInProcess:=PutThreadsInProcess+1; begin fidFTP.MakeDir(FTPClient.FTPParams.UploadDir); fidFTP.ChangeDir(FTPClient.FTPParams.UploadDir); //fidFTP.TransferType := ftBinary; fidFTP.Put(SourceFileName,DestFileName); end; PutThreadsInProcess:=PutThreadsInProcess-1; //Enabled:=true; // Разблокировка формы //if PutThreadsInProcess=0 then MultiUploadForm.Hide; // << Закроет окно по завершении end; finally //fidFTP.Disconnect; // Не включать... FreeAndNil(fidFTP); CriticalSection.Leave; FreeAndNil(FCriticalSection); end; { Place thread code here } end; function TFTPUploadThread.FindIndex:integer; var i: Integer; begin for i := 0 to FTPClient.UploadProgressList.Count-1 do begin if TfUploadProgress(FTPClient.UploadProgressList.Items[i]). lUploadFileName.Caption=ExtractFileName(SourceFileName) then Result:=i; end; end; procedure TFTPUploadThread.IdFTPAfterPut(Sender: TObject); begin //ShowMessage('File Successfully Uploaded'); end; procedure TFTPUploadThread.IdFTPWorkBegin(ASender: TObject; AWorkMode: TWorkMode; AWorkCountMax: Int64); begin // FTPClientForm.MultiUploadForm.Caption:=IndexInUploadProgressList.ToString; FileSize:=AWorkCountMax; //Getting FileSizeString if AWorkCountMax<1024 then FileSizeString:=AWorkCountMax.ToString()+' Bytes'; if (AWorkCountMax>1024) and (AWorkCountMax<(1024*1024)) then FileSizeString:=(Trunc(AWorkCountMax/1024)).ToString()+' KB'; if (AWorkCountMax>(1024*1024)) {and (FileSize<(1024*1024*1024))} then FileSizeString:=(Trunc(AWorkCountMax/(1024*1024))).ToString()+' MB'; with TfUploadProgress(FTPClient.UploadProgressList. Items[FindIndex]) do ProgressBar.Max:=100; end; procedure TFTPUploadThread.IdFTPWork(ASender: TObject; AWorkMode: TWorkMode; AWorkCount: Int64); var CurrentBytesString:string; begin //Getting CurrentBytes if AWorkCount<1024 then CurrentBytesString:=AWorkCount.ToString()+' Bytes'; if (AWorkCount>1024) and (AWorkCount<(1024*1024)) then CurrentBytesString:=(Trunc(AWorkCount/1024)).ToString()+' KB'; if (AWorkCount>(1024*1024)) {and (FileSize<(1024*1024*1024))} then CurrentBytesString:=(Trunc(AWorkCount/(1024*1024))).ToString()+' MB'; with TfUploadProgress(FTPClient.UploadProgressList. Items[FindIndex]) do begin ProgressBar.Position:=Trunc((AWorkCount/Filesize)*100); lFileSize.Caption:=CurrentBytesString+' / '+FileSizeString; end; end; procedure TFTPUploadThread.IdFTPStatus(ASender: TObject; const AStatus: TIdStatus; const AStatusText: string); begin with TfUploadProgress(FTPClient.UploadProgressList. Items[FindIndex]) do begin lUploadStatus.Caption:=AStatusText; //if AStatusText='Transfer Complete' then ProgressBar.Position:=100; end; end; procedure TFTPUploadThread.IdFTPWorkEnd(ASender: TObject; AWorkMode: TWorkMode); begin with TfUploadProgress(FTPClient.UploadProgressList. Items[FindIndex]) do ProgressBar.position:=ProgressBar.Max; end; end. |
В главном же модуле тоже произошли кое какие изменения
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unit uVisualFrame_PSFTPClient; interface uses Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.ComCtrls, Vcl.StdCtrls, Vcl.ExtCtrls, Vcl.Buttons, IdBaseComponent, IdComponent, IdTCPConnection, IdTCPClient, IdExplicitTLSClientServerBase, IdFTP,IdException,Contnrs,uPSFTPUploadFrame,uPSMultiUploadForm,System.IOUtils; type TFTPParams=record Host:string; Port:integer; Username:string; Password:string; UploadDir:string; UploadDirTemp:string; end; type TVisualFrame = class(TFrame) PageControl: TPageControl; tsInsertFromWeb: TTabSheet; bInsertLinkToPage: TBitBtn; OpenDialog: TOpenDialog; pLinks: TPanel; leLink: TLabeledEdit; leLinkName: TLabeledEdit; ScrollBox1: TScrollBox; IdFTP: TIdFTP; tsMediaLibrary: TTabSheet; pControlsPanel: TPanel; cbFileTypes: TComboBox; eSearch: TEdit; bSearch: TBitBtn; bTest: TButton; tsUploadToServer: TTabSheet; bChooseFiles: TBitBtn; tsUploads: TTabSheet; ScrollBoxUploads: TScrollBox; procedure FrameResize(Sender: TObject); procedure eSearchClick(Sender: TObject); procedure bTestClick(Sender: TObject); procedure bChooseFilesClick(Sender: TObject); private // Мультиаплоад форма и параметры FMultiUploadForm:TfMultiUpload; FFTPParams:TFTPParams; //Визуализация многопоточной загруки FLastUploadProgress:integer; FUploadProgressList:TObjectList; //Лист потоков загрузки на FTP сервер FPutThreadsList:TObjectList; FLastPutThreadNumber:integer; // Списки файлов на клиенте и на сервере FFilesOnClient:TStringList; // Список файлов к загрузке FFilesOnServer:TStringList; // Список файлов и папок... //Число потоков FPutThreadsInProcess:integer; procedure CenterElements; procedure FillFilesOnServer; procedure PutFileOnServer(FileName: string); procedure Test; public constructor Create(AOwner:TComponent); override; destructor Destroy; // Мультиаплоад форма и параметры property MultiUploadForm:TfMultiUpload read FMultiUploadForm write FMultiUploadForm; property FTPParams:TFTPParams read FFTPParams write FFTPParams; //Файлы на сервере и на клиенте property FilesOnClient:TStringList read FFilesOnClient write FFilesOnClient; property FilesOnServer:TStringList read FFilesOnServer write FFilesOnServer; //___ property UploadProgressList:TObjectList read FUploadProgressList write FUploadProgressList; property PutThreadsList:TObjectList read FPutThreadsList write FPutThreadsList; property LastPutThreadNumber:integer read FLastPutThreadNumber write FLastPutThreadNumber; //Число текущих потоков property PutThreadsInProcess:integer read FPutThreadsInProcess write FPutThreadsInProcess; //Публичные функции и процедуры function IsFTPServerConnectionOk:Boolean; function Translit(s: string): string; function GetFileSize(FileName: String; var FileSize: Int64): string; end; implementation uses uPSFTPUploadThread; {$R *.dfm} { TVisualFrame } function TVisualFrame.GetFileSize(FileName: String; var FileSize:Int64): string; var FS: TFileStream; SizeInBytes:Int64; begin try FS := TFileStream.Create(Filename, fmOpenRead); try FileSize:=FS.Size; if FileSize<1024 then Result:=FileSize.ToString()+' Bytes'; if (FileSize>1024) and (FileSize<(1024*1024)) then Result:=(Trunc(FileSize/1024)).ToString()+' KB'; if (FileSize>(1024*1024)) {and (FileSize<(1024*1024*1024))} then Result:=(Trunc(FileSize/(1024*1024))).ToString()+' MB'; finally FS.Free; end; except on E:Exception do begin FileSize := -1; Result:='-1'; raise Exception.Create(E.ClassName+' Exception Raised : ' +#13#10+#13#10+E.Message); end; end; end; procedure TVisualFrame.bChooseFilesClick(Sender: TObject); var i: Integer; DestName:string; JoinedString: string; begin if not IsFTPServerConnectionOk then exit; FilesOnClient.Clear; FillFilesOnServer; if OpenDialog.Execute then // Отправляем на сервер for i := 0 to OpenDialog.Files.Count-1 do PutFileOnServer(OpenDialog.Files[i]); // if not MultiUploadForm.Visible then MultiUploadForm.ShowModal; end; procedure TVisualFrame.bTestClick(Sender: TObject); begin Test; { ShowMessage( ExtractFileDir(Application.ExeName)+'\temp' ); } //if IsFTPServerConnectionOk then ShowMessage('FTPConnectionOk'); end; procedure TVisualFrame.CenterElements; begin leLink.Width:=20; leLink.Width:=Self.Width-2*leLink.Left; //Self.Width-leLink.Left-leLink.Width=leLink.Left; leLinkName.Width:=20; leLinkName.Width:=Self.Width-2*leLinkName.Left; //Центрируем кнопку выбора файлов по горизонтали и вертикали bChooseFiles.Left:=Trunc((Self.Width/2)-(bChooseFiles.Width/2)); bChooseFiles.Top:=Trunc((Self.Height/2)-(bChooseFiles.Height/2)); //Центрируем кнопку вставки ссылки //bInsertLinkToPage.Left:=Trunc((Self.Width/2)-(bInsertLinkToPage.Width/2)); //bChooseFiles.Top:=Self.Height-bChooseFiles.Height-20; end; constructor TVisualFrame.Create(AOwner: TComponent); begin inherited; MultiUploadForm:=TfMultiUpload.Create(Self); with FFTPParams do begin Host:='localhost'; Port:=22; Username:='Login'; Password:='Password'; UploadDir:='/files'; UploadDirTemp:='/files/temp'; end; CenterElements; FFilesOnClient:=TStringList.Create; // Список файлов к загрузке FFilesOnServer:=TStringList.Create; // Список файлов и папок... //Листы объектов FPutThreadsList:=TObjectList.Create; FPutThreadsList.OwnsObjects:=false; // << Потоки сами самоудаляются FUploadProgressList:=TObjectList.Create; end; destructor TVisualFrame.Destroy; begin ReportMemoryLeaksOnShutdown:=true; FreeAndNil(FPutThreadsList); FreeAndNil(FUploadProgressList); FreeAndNil(FFilesOnClient); FreeAndNil(FFilesOnServer); end; procedure TVisualFrame.eSearchClick(Sender: TObject); begin if eSearch.Text='Поиск...' then eSearch.Text:=''; end; procedure TVisualFrame.FrameResize(Sender: TObject); begin CenterElements; end; function TVisualFrame.IsFTPServerConnectionOk: Boolean; begin Result:=false; with idFTP do begin Host:=FTPParams.Host;// 'localhost'; //FTP-сервер Port:=FTPParams.Port;// 22; //порт ФТП сервера Username:=FTPParams.Username;// 'Логин'; Password:=FTPParams.Password;// 'Пароль'; end; try idFTP.Connect; try try if IdFTP.Connected then Result:=true; finally idFTP.Disconnect; end; except //Other exceptions on E: EIdException do begin raise Exception.Create(E.ClassName+' An network error occurred during communication: ' +#13#10+#13#10+E.Message); end; on E: Exception do begin raise Exception.Create(E.ClassName+' An unknown error occurred during communication: ' +#13#10+#13#10+E.Message); end; end; except // Catching Connection Exceptions on E: EIdException do begin raise Exception.Create(E.ClassName+' An network error occurred while trying to connect: ' +#13#10+#13#10+E.Message); end; on E: Exception do begin raise Exception.Create(E.ClassName+'An unknown error occurred while trying to connect: ' +#13#10+#13#10+E.Message); end; end; end; procedure TVisualFrame.Test; var SourceFileName: string; DestFileName: string; SourceFileNameServer: string; DestFileNameServer: string; s: string; SplittedString: TArray<String>; NewNameOnServer: string; begin with idFTP do begin Host:=FTPParams.Host;// 'localhost'; //FTP-сервер Port:=FTPParams.Port;// 22; //порт ФТП сервера Username:=FTPParams.Username;// 'Логин'; Password:=FTPParams.Password;// 'Пароль'; Connect; end; if OpenDialog.Execute then begin SourceFileName:=OpenDialog.FileName; DestFileName:=Translit(ExtractFileName(OpenDialog.FileName)); //Создаем и меняем поддиректорию idFTP.MakeDir(FTPParams.UploadDirTemp); // /files/temp idFTP.ChangeDir(FTPParams.UploadDirTemp); //Переносим туда файл // idFTP.TransferType := ftBinary; // idFTP.Put(SourceFileName,DestFileName,false); //Переименовываем его в поддиректории // SourceFileNameServer:=FTPParams.UploadDirTemp+'/'+DestFileName; SplittedString:=DestFileName.Split(['.']); SplittedString[0]:=SplittedString[0]+Random(10000).ToString; NewNameOnServer:=FTPParams.UploadDirTemp+'/'+SplittedString[0]+'.'+SplittedString[1]; idFTP.Rename(SourceFileNameServer,NewNameOnServer); idFTP.Put(SourceFileName,SplittedString[0]+'.'+SplittedString[1],false); { // И ещё раз... SourceFileNameServer:=NewNameOnServer; DestFileNameServer:=FTPParams.UploadDir+'/'+DestFileName; ShowMessage(SourceFileNameServer); ShowMessage(DestFileNameServer); // idFTP.Rename(SourceFileNameServer,DestFileNameServer); } //IdFTP.Put(SourceFileNameServer,DestFileNameServer); // ShowMessage(idFTP.RetrieveCurrentDir); // ShowMessage(SourceFileNameServer); // ShowMessage(DestFileNameServer); // idFTP.Rename(); //Переносим в основную директорию /files //Удаляем из поддиректории /files/temp end; IdFTP.Disconnect; end; function TVisualFrame.Translit(s: string): string; const rus: string = 'абвгдеёжзийклмнопрстуфхцчшщьыъэюя'; lat: array[1..33] of string = ('a', 'b', 'v', 'g', 'd', 'e', 'yo', 'zh', 'z', 'i', 'y', 'k', 'l', 'm', 'n', 'o', 'p', 'r', 's', 't', 'u', 'f', 'h', 'ts', 'ch', 'sh', 'shch', '''', 'y', '''', 'e', 'yu', 'ya'); var p, i, l: integer; begin s:=widelowercase(s); Result := ''; l := Length(s); for i := 1 to l do begin p := Pos(s[i], rus); if p<1 then Result := Result + s[i] else Result := Result + lat[p]; end; end; procedure TVisualFrame.PutFileOnServer(FileName: string); var s: string; SplittedString: TArray<String>; NewNameOnServer: string; FileSize: Int64; begin { FilesOnClient.Add(ExtractFileName(OpenDialog.Files[i])); // Проверяем, есть ли такой файл на сервере - придумываем ему новое имя if FilesOnServer.IndexOf(ExtractFileName(OpenDialog.Files[i])) <> -1 then begin // Придумываем новое имя, если файл с таким именем уже есть на сервере s := ExtractFileName(OpenDialog.Files[i]); SplittedString := s.Split(['.']); SplittedString[0] := SplittedString[0] + Random(10000).ToString; //s:=SplittedString[0]+'.'+SplittedString[1]; //NewNameOnServer:=SplittedString[0]+'.'+SplittedString[1]; NewNameOnServer := NewNameOnServer.Join('.', [SplittedString[0], SplittedString[1]]); showmessage(s); end; } //Визуализация загрузки FLastUploadProgress := UploadProgressList.Add(TfUploadProgress.Create(Self)); with TfUploadProgress(UploadProgressList.Items[FLastUploadProgress]) do begin Name := 'fUploadProgress' + FLastUploadProgress.ToString; // Parent := MultiUploadForm.ScrollBox; Parent:=ScrollBoxUploads; PageControl.TabIndex:=3; Align := alTop; //Имя файла lUploadFileName.Caption := ExtractFileName(FileName); //Указываем размер lFileSize.Caption := GetFileSize(FileName, FileSize); //Настраиваем ProgressBar ProgressBar.Max := FileSize; ProgressBar.Step := Trunc(FileSize / 100); end; // Непосредственно отправка на сервер - в потоке... begin //Собственно загрузка ВАРИАНТ2 - Создание потока через ObjectList LastPutThreadNumber := PutThreadsList.Add(TFTPUploadThread.Create(true)); with TFTPUploadThread(PutThreadsList.Items[LastPutThreadNumber]) do begin FTPClient := Self; FreeOnTerminate := True; IndexInUploadProgressList := FLastUploadProgress; SourceFileName := FileName; if FilesOnServer.IndexOf( ExtractFileName(FileName) )<>-1 then begin DestFileName := Translit(ExtractFileName(SourceFileName)); SplittedString:=DestFileName.Split(['.']); SplittedString[0]:=SplittedString[0]+Random(10000000).ToString; NewNameOnServer:=FTPParams.UploadDir+'/'+SplittedString[0]+'.'+SplittedString[1]; DestFileName:=NewNameOnServer; end else DestFileName:=ExtractFileName(SourceFileName); // ShowMessage(DestFileName); Start; end; end; end; //-----Список файлов с сервера procedure TVisualFrame.FillFilesOnServer; var I: integer; begin with idFTP do begin Host:=FTPParams.Host;// 'localhost'; //FTP-сервер Port:=FTPParams.Port;// 22; //порт ФТП сервера Username:=FTPParams.Username;// 'Логин'; Password:=FTPParams.Password;// 'Пароль'; end; try idFTP.Connect; try try if IdFTP.Connected then begin //ОСНОВНАЯ РАБОТА ЗДЕСЬ with idFTP do begin // Создаем директорию и меняем её MakeDir(FTPParams.UploadDir); ChangeDir(FTPParams.UploadDir); List; // <<Собираем список папок и файлов FilesOnServer.Clear; for i := 0 to IdFTP.DirectoryListing.Count-1 do begin FilesOnServer.Add(IdFTP.DirectoryListing[i].FileName); end; end; end; finally idFTP.Disconnect; end; except //Other exceptions on E: EIdException do begin raise Exception.Create(E.ClassName+' An network error occurred during communication: ' +#13#10+#13#10+E.Message); end; on E: Exception do begin raise Exception.Create(E.ClassName+' An unknown error occurred during communication: ' +#13#10+#13#10+E.Message); end; end; except // Catching Connection Exceptions on E: EIdException do begin raise Exception.Create(E.ClassName+' An network error occurred while trying to connect: ' +#13#10+#13#10+E.Message); end; on E: Exception do begin raise Exception.Create(E.ClassName+'An unknown error occurred while trying to connect: ' +#13#10+#13#10+E.Message); end; end; end; end. |