Log4j - HTMLLayout
Log4j provides multiple options to format log files created by the framework. It can create simple log files, xml log files or html log files also.
If you want to create your logging information in an HTML formatted file, then you have to use the org.apache.HTMLLayout class to format your logging information.
The HTMLLayout class extends the abstract class, i.e., org.apache.log4j.Layout class and overrides the format() method from its base class to provide HTML style formatting.
HTMLLayout displays the following information:
HTMLLayout is a very simple object of Layout that provides the following methods:
Following is the simple configuration file for HTMLLayout:
Following is the Java file which would generate logging information:
Compile then run the above code. It would create an htmlLayout.html file in C:/usr/home/log4j directory which would have the following log information:
You can use any web browser to open htmlLayout.html file. You can note that the footer for the </html> and </body> tags is completely missing.
One of the biggest advantages of having the log file in HTML format is that it can be published as a web page for remote viewing.