Our modeling tools, including MagicDraw, use the Log4j logger. The configuration file is <program installation directory>/data/log4j2.xml.
The <program installation directory>/data/log4j2-test.xml file is used as a configuration file for program test cases.
The following sample presents the content of the configuration file. It configures the logger to print INFO category messages to a console with a specific pattern.
<?xml version="1.0" encoding="UTF-8"?> <Configuration status="warn" monitorInterval="30"> <Appenders> <Console name="Console" target="SYSTEM_OUT"> <PatternLayout pattern="%d [%t] [%X{id} %X{action_name}] %-5p %c - %m%n"/> </Console> </Appenders> <Loggers> <Root level="info"> <AppenderRef ref="Console"/> </Root> </Loggers> </Configuration>
The example below displays how information can be logged to the configured log file:
//used to get logger with category name org.apache.log4j.Logger logger = org.apache.log4j.Logger.getLogger("GENERAL"); // set thread context values (optional) ThreadContext.put("id", "My id"); ThreadContext.put("action_name", "My Action"); logger.info("Logging info"); logger.error("Logging error"); //by default the text will be displayed in the form of: //0000-00-00 00:00:00,000 [THREAD] [My id My Action] INFO GENERAL - Logging info //0000-00-00 00:00:00,000 [THREAD] [My id My Action] ERROR GENERAL - Logging error
More information about Log4j can be found at https://logging.apache.org/log4j/2.x/.