unit Unit1;interfaceuses Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs,Winapi.msxml, System.DateUtils, Vcl.StdCtrls;type TForm1 = class(TForm) Button1: TButton; Label1: TLabel; Label2: TLabel; procedure Button1Click(Sender: TObject); private { Private declarations } public { Public declarations } end;var Form1: TForm1;implementation{ $R *.dfm}//实时获取网络时间的函数, 得到的是格林威治时间; 默认从 sohu 服务器获取, 因为它最快, 平均只需 15 毫秒function GetNetTime(aUrl: WideString = 'http://www.sohu.com'): string;begin with CoXMLHTTP.Create do begin open('Post', aUrl, False, EmptyParam, EmptyParam); send(EmptyParam); Result := getResponseHeader('Date'); end;end;//格林威治时间(字符串)转换到北京时间 1function GMT2BjDateTime(const GMT: string): TDateTime;var A: TArray;begin A := GMT.Split([',', ' '], ExcludeEmpty); //XE4 支持 with TStringList.Create do begin CommaText := 'Jan=1,Feb=2,Mar=3,Apr=4,May=5,Jun=6,Jul=7,Aug=8,Sep=9,Oct=10,Nov=11,Dec=12'; A[2] := Values[A[2]]; Free; end; Result := StrToDateTime(Format('%s/%s/%s %s', [A[3], A[2], A[1], A[4]]), FormatSettings.Create(2052)); Result := Result + 8/24; //换算成北京时间end;//格林威治时间(字符串)转换到北京时间 2function GMT2BjDateTime2(const GMT: string): TDateTime;var A: TArray ;begin A := GMT.Split([',', ' '], ExcludeEmpty); //XE4 支持 with TStringList.Create do begin CommaText := 'Jan=1,Feb=2,Mar=3,Apr=4,May=5,Jun=6,Jul=7,Aug=8,Sep=9,Oct=10,Nov=11,Dec=12'; A[2] := Values[A[2]]; Free; end; Result := StrToDateTime(Format('%s/%s/%s %s', [A[3], A[2], A[1], A[4]]), FormatSettings.Create(2052)); Result := Result + 8/24; //换算成北京时间end;procedure TForm1.Button1Click(Sender: TObject);var strGMT: string; bjDateTime: TDateTime; bjDateTime2: TDateTime;begin strGMT := GetNetTime(); bjDateTime := GMT2BjDateTime(strGMT); bjDateTime2 := GMT2BjDateTime2(strGMT); Label1.Caption:=strGMT + #10 + DateTimeToStr(bjDateTime); Label2.Caption:=strGMT + #10 + DateTimeToStr(bjDateTime2);end;end.