delphi使用Chilkat 组件和库从SFTP下载文件

官网地址：https://www.example-code.com/delphiDll/default.asp

实例代码：(不包括全局解锁)  密码生成器：https://www.cnblogs.com/hhmm99/p/11383027.html

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, SFtp;

...

procedure TForm1.Button1Click(Sender: TObject);
var
sftp: HCkSFtp;
hostname: PWideChar;
port: Integer;
success: Boolean;
remoteFilePath: PWideChar;
localFilePath: PWideChar;

begin
// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

sftp := CkSFtp_Create();

// Set some timeouts, in milliseconds:
CkSFtp_putConnectTimeoutMs(sftp,5000);
CkSFtp_putIdleTimeoutMs(sftp,10000);

// Connect to the SSH server.  
// The standard SSH port = 22
// The hostname may be a hostname or IP address.
hostname := 'sftp.example.com';// ip
port := 22;// 端口 
success := CkSFtp_Connect(sftp,hostname,port);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkSFtp__lastErrorText(sftp));
    Exit;
  end;

// Authenticate with the SSH server.  Chilkat SFTP supports
// both password-based authenication as well as public-key
// authentication.  This example uses password authenication.
success := CkSFtp_AuthenticatePw(sftp,'myLogin','myPassword');// 账号密码
if (success <> True) then
  begin
    Memo1.Lines.Add(CkSFtp__lastErrorText(sftp));
    Exit;
  end;

// After authenticating, the SFTP subsystem must be initialized:
success := CkSFtp_InitializeSftp(sftp);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkSFtp__lastErrorText(sftp));
    Exit;
  end;

// Download the file:

localFilePath := 'c:/temp/hamlet.xml';// 本地保存路径
remoteFilePath := 'subdir1/subdir2/hamlet.xml'; // 服务器文件路径
// The ResumeDownloadFileByName method will check
// the local file and begin downloading the remote file
// at the appropriate point.  For example, if the local
// file is already 215624 bytes long, it will begin downloading
// the remote file at the 215625'th byte -- appending to
// the local file.
success := CkSFtp_ResumeDownloadFileByName(sftp,remoteFilePath,localFilePath);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkSFtp__lastErrorText(sftp));
    Exit;
  end;

Memo1.Lines.Add('Success.');

CkSFtp_Dispose(sftp);

end;

 
© 2000-2019 Chilkat Software, Inc. All Rights Reserved.

解锁：

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Global;

...

procedure TForm1.Button1Click(Sender: TObject);
var
glob: HCkGlobal;
success: Boolean;
status: Integer;

begin
// The Chilkat API can be unlocked for a fully-functional 30-day trial by passing any
// string to the UnlockBundle method.  A program can unlock once at the start. Once unlocked,
// all subsequently instantiated objects are created in the unlocked state. 
// 
// After licensing Chilkat, replace the "Anything for 30-day trial" with the purchased unlock code.
// To verify the purchased unlock code was recognized, examine the contents of the LastErrorText
// property after unlocking.  For example:
glob := CkGlobal_Create();
success := CkGlobal_UnlockBundle(glob,'Anything for 30-day trial');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkGlobal__lastErrorText(glob));
    Exit;
  end;

status := CkGlobal_getUnlockStatus(glob);
if (status = 2) then
  begin
    Memo1.Lines.Add('Unlocked using purchased unlock code.');
  end
else
  begin
    Memo1.Lines.Add('Unlocked in trial mode.');
  end;

// The LastErrorText can be examined in the success case to see if it was unlocked in
// trial more, or with a purchased unlock code.
Memo1.Lines.Add(CkGlobal__lastErrorText(glob));

CkGlobal_Dispose(glob);

end;

成功：