Using the Log4delphi 0.8 log component under Delphi 7

Log4delphi is an open source project designed to produce Delphi's high-quality and practical log suite for Borland, which is based on the Apache Software Foundation's log4j package.

Installation:
1. Download the 0.8 version from http://sourceforge.net/projects/log4delphi/files/and unzip to the folder. Open Folder "... \log4delphi-0.8", create a new folder "build";
2. Run Delphi 7, open the component package "LOG4DELPHI_D7_PROF.DPK", under "... \log4delphi-0.8\src\delphi", click "Compile" and "install" to compile and install;
3. Menu "Tools" → "Environment Options" → "Library" → "Library path", add "... \log4delphi-0.8\build" directory (if you need to connect the source code, then add "... \ Log4delphi-0.8\src\delphi "and" ... \log4delphi-0.8\src\delphi\util ");
Use:
1. Create a new application to save the current project.
2. The menu "Project" → "View Source", add the initialization log, etc., the code is as follows:

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Program Project1; Uses Forms, Tconfiguratorunit, {need to reference this cell} Unit1 in ' Unit1.pas ' {Form1}; {$R *.res} Begin Application.initialize; Dopropertiesconfiguration (' log4delphi.properties '); {Initialize, read properties} Application.createform (TForm1, Form1); Application.Run; End.

3. Copy "... \log4delphi-0.8\example\log4delphi.properties" to the project directory;
4. Place two buttons on the form, click the event and the form's destroy event as follows:

" "Geneva " " " " " " + - + - - / -

implementation    Uses tloggerunit;    {must refer to this cell}    {$R  *.dfm}    Procedure tform1.btn1click (sender: tobject);   begin     TLogger.GetInstance.Debug (' button 1 was ordered ');    {gets Tlogger instance}  end;    Procedure  tform1.btn2click (sender: tobject);   begin    tlogger.getinstance.info (' Button 2 was also ordered ');   {includes: Fatal, Error, Warn, Info, Debug, trace}  end;    procedure  Tform1.formdestroy (sender: tobject);   begin    TLogger.FreeInstances;    {release}  when no use is required; end;

5. Run the program, click button One and button two to close the program. In the project directory, you will find a "app.log" file that opens as follows:

6. Open the properties file "Log4delphi.properties" to see some of the default properties and property descriptions. For example, you can set the log file layout, the original content is as follows:

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Log4delphi.appender.fileappender.layout=tsimplelayout #log4delphi. appender.fileappender.layout=txmllayout #log4delphi. appender.fileappender.layout=thtmllayout #log4delphi. Appender.fileappender.layout.title=document Title #log4delphi. appender.fileappender.layout=tpatternlayout #log4delphi. Appender.fileappender.layout.pattern=%d{dd mmm yyyy hh:nn:ss:zzz} [%5p]%m%n

The default is to open Tsimplelayout, which is a simple layout, formatted as above. If we need to do the log output in the time format, we need to disable Tsimplelayout and then open the Tpatternlayout and the styles below it, such as:

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#log4delphi. appender.fileappender.layout=tsimplelayout #log4delphi. appender.fileappender.layout=txmllayout #log4delphi. appender.fileappender.layout=thtmllayout #log4delphi. Appender.fileappender.layout.title=document Title Log4delphi.appender.fileappender.layout=tpatternlayout Log4delphi.appender.fileappender.layout.pattern=%d{dd mmm yyyy hh:nn:ss:zzz} [%5p]%m%n

7. Perform the 5th step again, open as shown:

8. If the time format does not meet the individual requirements, you can customize your own format, you can refer to the User Guide (http://log4delphi.sourceforge.net/userguide.html).

Extended Data:
1.log4delphi Use Experience http://www.cnblogs.com/kfarvid/archive/2010/08/02/1790641.html

Using the Log4delphi 0.8 log component under Delphi 7