调用dos

两个方法

function RunDosCommand(Command: string): string;
var
  hReadPipe: THandle;
  hWritePipe: THandle;
  SI: TStartUpInfo;
  PI: TProcessInformation;
  SA: TSecurityAttributes;
  BytesRead: DWORD;
  Dest: array[0..1023] of AnsiChar;
  CmdLine: array[0..512] of char;
  TmpList: TStringList;
  Avail, ExitCode, wrResult: DWORD;
  osVer: TOSVERSIONINFO;
  tmpstr: AnsiString;
begin
  osVer.dwOSVersionInfoSize := Sizeof(TOSVERSIONINFO);
  GetVersionEX(osVer);

  if osVer.dwPlatformId = VER_PLATFORM_WIN32_NT then
  begin
    SA.nLength := SizeOf(SA);
    SA.lpSecurityDescriptor := nil; //@SD;
    SA.bInheritHandle := True;
    CreatePipe(hReadPipe, hWritePipe, @SA, 0);
  end
  else
    CreatePipe(hReadPipe, hWritePipe, nil, 1024);
  try
    FillChar(SI, SizeOf(SI), 0);
    SI.cb := SizeOf(TStartUpInfo);
    SI.wShowWindow := SW_HIDE;
    SI.dwFlags := STARTF_USESHOWWINDOW;
    SI.dwFlags := SI.dwFlags or STARTF_USESTDHANDLES;
    SI.hStdOutput := hWritePipe;
    SI.hStdError := hWritePipe;
    StrPCopy(CmdLine, Command);
    if CreateProcess(nil, CmdLine, nil, nil, True, NORMAL_PRIORITY_CLASS, nil, nil, SI, PI) then
    begin
      ExitCode := 0;
      while ExitCode = 0 do
      begin
        wrResult := WaitForSingleObject(PI.hProcess, 500);
        if PeekNamedPipe(hReadPipe, @Dest[0], 1024, @Avail, nil, nil) then
        begin
          if Avail > 0 then
          begin
            TmpList := TStringList.Create;
            try
              FillChar(Dest, SizeOf(Dest), 0);
              ReadFile(hReadPipe, Dest[0], Avail, BytesRead, nil);
              TmpStr := Copy(Dest, 0, BytesRead - 1);
              TmpList.Text := TmpStr;
              Result := string(tmpstr);
            finally
              TmpList.Free;
            end;
          end;
        end;
        if wrResult <> WAIT_TIMEOUT then ExitCode := 1;
      end;
      GetExitCodeProcess(PI.hProcess, ExitCode);
      CloseHandle(PI.hProcess);
      CloseHandle(PI.hThread);
    end;
  finally
    CloseHandle(hReadPipe);
    CloseHandle(hWritePipe);
  end;
end;

function GetURLResult(url: string): string;
begin
  Result := RunDosCommand(Format('http.exe "%s"', [url]));
  if Result.ToLower.StartsWith('error') then
    Exit('error');

  Result := Copy(Result, 1, Result.IndexOf('}') + 1);
end;

 

调用方式：

 

Edit1.Text := GetURLResult('http://0.0.0.0/test/getResult/94bdb076dcdb8f6bab77321ece18f8af');