今天调程序，要用到日志。XE7有Qlog,D7用什么
从网上找到了Logger，下载的原文是不支持D7的，不过也只是很少的地方不同，自己修改了下就可以用了
感谢原作者和红鱼的分享
unit Logger;
// =======================================================================
// 鏃ュ織绫伙紙TLogger锛?ver.1.0
// 绾㈤奔鍎?http://blog.sina.com.cn/hblyuhong
// 2014/06/24
// 鍩轰簬1.0淇敼
// PFeng (http://www.pfeng.org / xxmc01#gmail.com)
// 2012/11/08
// 鏃ュ織绾у埆绾﹀畾锛?
// 0 - Information
// 1 - Notice
// 2 - Warning
// 3 - Error
// ======================================================================= interface uses Windows, Classes, SysUtils, StdCtrls, ComCtrls, ComObj, Messages; const
WRITE_LOG_DIR = 'log\'; // 璁板綍鏃ュ織榛樿鐩綍
WRITE_LOG_MIN_LEVEL = ; // 璁板綍鏃ュ織鐨勬渶浣庣骇鍒紝灏忎簬姝ょ骇鍒彧鏄剧ず涓嶈褰?
WRITE_LOG_ADD_TIME = True; // 璁板綍鏃ュ織鏄惁娣诲姞鏃堕棿
WRITE_LOG_TIME_FORMAT = 'hh:nn:ss.zzz'; // 璁板綍鏃ュ織娣诲姞鏃堕棿鐨勬牸寮?
SHOW_LOG_ADD_TIME = True; // 鏃ュ織鏄剧ず瀹瑰櫒鏄惁娣诲姞鏃堕棿
SHOW_LOG_TIME_FORMAT = 'yyyy/mm/dd hh:nn:ss.zzz'; // 鏃ュ織鏄剧ず娣诲姞鏃堕棿鐨勬牸寮?
SHOW_LOG_CLEAR_COUNT = ; // 鏃ュ織鏄剧ず瀹瑰櫒鏈€澶ф樉绀烘潯鏁? type
TLogger = class
private
FCSLock: TRTLCriticalSection; // 涓寸晫鍖?
FFileStream: TFileStream; // 鏂囦欢娴?
FLogShower: TComponent; // 鏃ュ織鏄剧ず瀹瑰櫒
FLogName: String; // 鏃ュ織鍚嶇О
FEnabled: Boolean;
FLogFileDir: string; // 鏃ュ織鐩綍
procedure SetEnabled(const Value: Boolean);
procedure SetLogFileDir(const Value: string);
procedure SetLogShower(const Value: TComponent);
protected
procedure ShowLog(Log: String; const LogLevel: Integer = );
public
procedure WriteLog(Log: String; const LogLevel: Integer = ); overload;
procedure WriteLog(Log: String; const Args: array of const; const LogLevel: Integer = ); overload; constructor Create;
destructor Destroy; override; // 启用
property Enabled: Boolean read FEnabled write SetEnabled;
// 日志目录
property LogFileDir: string read FLogFileDir write SetLogFileDir;
// 显示控件
property LogShower: TComponent read FLogShower write SetLogShower; end; implementation constructor TLogger.Create;
begin
InitializeCriticalSection(FCSLock);
FLogShower := nil;
LogFileDir := ExtractFilePath(ParamStr()) + WRITE_LOG_DIR;
end; procedure TLogger.WriteLog(Log: String; const Args: array of const; const LogLevel: Integer = );
begin
WriteLog(Format(Log, Args), LogLevel);
end; procedure TLogger.WriteLog(Log: String; const LogLevel: Integer = );
var
logName: String;
fMode: Word;
Fstrs:TStringStream;
begin
EnterCriticalSection(FCSLock);
try
if not Enabled then
Exit; ShowLog(Log, LogLevel); // 鏄剧ず鏃ュ織鍒板鍣?
if LogLevel >= WRITE_LOG_MIN_LEVEL then
begin
logName := FormatDateTime('yyyymmdd', Now) + '.log';
if FLogName <> logName then
begin
FLogName := logName;
if FileExists(FLogFileDir + FLogName) then // 濡傛灉褰撳ぉ鐨勬棩蹇楁枃浠跺瓨鍦?
fMode := fmOpenWrite or fmShareDenyNone
else
fMode := fmCreate or fmShareDenyNone; if Assigned(FFileStream) then
FreeAndNil(FFileStream);
FFileStream := TFileStream.Create(FLogFileDir + FLogName, fMode);
end; FFileStream.Position := FFileStream.Size; // 杩藉姞鍒版渶鍚?
case LogLevel of
:
Log := '[Information] ' + Log;
:
Log := '[Notice] ' + Log;
:
Log := '[Warning] ' + Log;
:
Log := '[Error] ' + Log;
end;
if WRITE_LOG_ADD_TIME then
Log := FormatDateTime(WRITE_LOG_TIME_FORMAT, Now) + ' ' + Log + ##; Fstrs:=TStringStream.Create(log);
Fstrs.Position:=;
FFileStream.CopyFrom(Fstrs,Fstrs.Size);
end;
finally
FreeAndNil(Fstrs);
LeaveCriticalSection(FCSLock);
end;
end; procedure TLogger.SetEnabled(const Value: Boolean);
begin
FEnabled := Value;
end; procedure TLogger.SetLogFileDir(const Value: string);
begin
FLogFileDir := Value;
if not DirectoryExists(FLogFileDir) then
if not ForceDirectories(FLogFileDir) then
begin
raise Exception.Create('日志路径错误，日志类对象不能被创建');
end;
end; procedure TLogger.SetLogShower(const Value: TComponent);
begin
FLogShower := Value;
end; procedure TLogger.ShowLog(Log: String; const LogLevel: Integer = );
var
lineCount: Integer;
listItem: TListItem;
begin
if FLogShower = nil then
Exit;
if (FLogShower is TMemo) then
begin
if SHOW_LOG_ADD_TIME then
Log := FormatDateTime(SHOW_LOG_TIME_FORMAT, Now) + ' ' + Log;
lineCount := TMemo(FLogShower).Lines.Add(Log);
// 滚动到最后一个
SendMessage(TMemo(FLogShower).Handle, WM_VSCROLL, SB_LINEDOWN, );
if lineCount >= SHOW_LOG_CLEAR_COUNT then
TMemo(FLogShower).Clear;
end
else if (FLogShower is TListBox) then
begin
if SHOW_LOG_ADD_TIME then
Log := FormatDateTime(SHOW_LOG_TIME_FORMAT, Now) + ' ' + Log;
lineCount := TListBox(FLogShower).Items.Add(Log);
SendMessage(TListBox(FLogShower).Handle, WM_VSCROLL, SB_LINEDOWN, );
if lineCount >= SHOW_LOG_CLEAR_COUNT then
TListBox(FLogShower).Clear;
end
else if (FLogShower is TListView) then
begin
listItem := TListView(FLogShower).Items.Add;
if SHOW_LOG_ADD_TIME then
listItem.Caption := FormatDateTime(SHOW_LOG_TIME_FORMAT, Now);
if Assigned(TListView(FLogShower).SmallImages) and (TListView(FLogShower).SmallImages.Count - >= LogLevel) then
listItem.ImageIndex := LogLevel; // 根据不同等级显示不同图片
listItem.SubItems.Add(Log);
SendMessage(TListView(FLogShower).Handle, WM_VSCROLL, SB_LINEDOWN, );
if TListView(FLogShower).Items.Count >= SHOW_LOG_CLEAR_COUNT then
TListView(FLogShower).Items.Clear;
end
else
raise Exception.Create('日志容器类型不支持' + FLogShower.ClassName);
end; destructor TLogger.Destroy;
begin
DeleteCriticalSection(FCSLock);
if Assigned(FFileStream) then
FreeAndNil(FFileStream);
end; end.