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如何用idftp遍历整个目录—-下载、删除_delphi教程
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, IdBaseComponent, IdComponent, IdTCPConnection,IdFTPList,
IdTCPClient, IdFTP ;
type
TForm1 = class(TForm)
Btt_DownLoadDir: TButton;
IdFTP1: TIdFTP;
Btt_DeleteDir: TButton;
Label1: TLabel;
lb_num: TLabel; //处理文件个数提示。
procedure Btt_DownLoadDirClick(Sender: TObject);
procedure Btt_DeleteDirClick(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
{ 下载整个目录，并遍历所有子目录
首先 ChangeDir(Root) 到根目录
然后创建本地目录 + RemoteDir
然后用 list 得到所有目录名
循环判断,进入 RemoteDir 目录内部
如果是目录继续第归。否则 get 该文件到本地目录，当 get 完所有文件后返回上一级目录
用List再取得信息，继续循环
}
procedure FTP_DownloadDir(var idFTP : TIdFtp;RemoteDir,LocalDir : string);
label Files ;
var
i,DirCount : integer;
begin
if not DirectoryExists(LocalDir + RemoteDir) then
ForceDirectories(LocalDir + RemoteDir);
idFTP.ChangeDir(RemoteDir);
idFTP.List(nil);
DirCount := idFTP.DirectoryListing.Count ;
if DirCount = 0 then
begin
idFTP.ChangeDirUp;
idFTP.List(nil);
end;
for i := 0 to DirCount – 1 do
begin
if DirCount <> idFTP.DirectoryListing.Count then
begin
repeat
idFTP.ChangeDirUp;
idFTP.List(nil);
until DirCount = idFTP.DirectoryListing.Count ;
end;
if idFTP.DirectoryListing[i].ItemType = ditDirectory then
FTP_DownloadDir(idFTP,idFTP.DirectoryListing[i].FileName,LocalDir + RemoteDir + \)
else begin
idFTP.Get(idFTP.DirectoryListing[i].FileName,LocalDir + RemoteDir + \ +
idFTP.DirectoryListing[i].FileName,true);
Form1.lb_num.Caption := IntToStr(StrToInt(Form1.lb_num.Caption) + 1);
Form1.lb_num.Update;
if i = DirCount – 1 then
begin
idFTP.ChangeDirUp;
idFTP.List(nil);
end;
end;
end;
end;
{删除整个ftp目录，包括下面的文件,
RootDir = 要删除的根目录，一般情况下 RemoteDir 与 RootDir 相等}
procedure FTP_DeleteAllFiles(var idFTP : TIdFtp;RemoteDir,RootDir : string);
label Files;
var
i,DirCount : integer;
Temp : string;
begin
idFTP.ChangeDir(RemoteDir);
if Pos(RootDir,idFTP.RetrieveCurrentDir) = 0 then Exit;
Files :
idFTP.List(nil);
DirCount := idFTP.DirectoryListing.Count ;
while DirCount = 0 do
begin
Temp := idFTP.RetrieveCurrentDir;
idFTP.ChangeDirUp;
idFTP.RemoveDir(Temp);
idFTP.List(nil);
DirCount := idFTP.DirectoryListing.Count ;
for i := 0 to DirCount – 1 do
if idFTP.DirectoryListing[i].FileName = RootDir then Exit;
end;
for i := 0 to DirCount – 1 do
begin
if Pos(RootDir,idFTP.RetrieveCurrentDir) = 0 then Break ;
if idFTP.DirectoryListing[i].ItemType = ditDirectory then
begin
FTP_DeleteAllFiles(idFTP,idFTP.DirectoryListing[i].FileName,RootDir);
end else begin
idFTP.Delete(idFTP.DirectoryListing[i].FileName);
Form1.lb_num.Caption := IntToStr(StrToInt(Form1.lb_num.Caption) + 1);
Form1.lb_num.Update;
goto Files ;
end;
end;
end;
procedure TForm1.Btt_DownLoadDirClick(Sender: TObject);
begin
IdFTP1.Connect(true,-1);
if IdFTP1.Connected then
begin
IdFTP1.ChangeDir(bigimage);
FTP_DownloadDir(IdFTP1,1002.1002.1002,g:\ftpdir\);
end;
IdFTP1.Disconnect ;
end;
procedure TForm1.Btt_DeleteDirClick(Sender: TObject);
begin
IdFTP1.Connect(true,-1);
if IdFTP1.Connected then
begin
IdFTP1.ChangeDir(bigimage);
FTP_DeleteAllFiles(IdFTP1,1002.1002.1002,1002.1002.1002);
end;
IdFTP1.Disconnect ;
end;
end.
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