import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
public class AzulMain {
private static final Logger LOGGER = LogManager.getLogger(AzulMain.class.getName());
public static void main(String[] args){
LOGGER.info("Maybe my first Logger works?");
}
}
The imports work fine. I use these jar-files:
And this is how my XML-file (log4j2.xml) looks. It is in the same folder as my AzulMain
:
<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="warn">
<Properties>
<Property name="log-path">log/${date:yyyy-MM-dd HH-mm-ss-SSS}</Property>
<Property name="archive">${log-path}/archive</Property>
</Properties>
<Appenders>
<Console name="Console-Appender" target="SYSTEM_OUT">
<PatternLayout>
<pattern>
%d{HH:mm:ss.SSS} %-5level %class{36} %L %M - %msg%xEx%n
</pattern>
</PatternLayout>
</Console>
<File name="File-Appender-AzulMain" fileName="${log-path}/Azul.log">
<PatternLayout>
<pattern>
%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level %class{36} %L %M - %msg%xEx%n
</pattern>
</PatternLayout>
</File>
<RollingFile name="RollingFile-Appender"
fileName="${log-path}/rollingfile.log"
filePattern="${archive}/rollingfile.log.%d{yyyy-MM-dd@HH-mm}.gz">
<PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level %class{36} %L %M - %msg%xEx%n"/>
<Policies>
<TimeBasedTriggeringPolicy/>
<SizeBasedTriggeringPolicy size="30 MB"/>
</Policies>
<DefaultRolloverStrategy max="30"/>
</RollingFile>
</Appenders>
<Loggers>
<Logger name="AzulMain" level="trace" additivity="false">
<AppenderRef ref="File-Appender-AzulMain" level="all"/>
<AppenderRef ref="Console-Appender" level="info"/>
</Logger>
<Root level="debug" additivity="false">
<AppenderRef ref="Console-Appender"/>
</Root>
</Loggers>
</Configuration>
When I use JavaUtilLogger everything works quite fine so far, I can make it create a file and print to console, however, with log4j nothing works.
I tested deleting the XML file and adding BasicConfigurator.configure()
into my main-method, but it still didn't work. If I start my main-method all I get is:
Process finished with exit code 0
What is strange to me is that when I use the command java -Dlog4j.debug -cp AzulMain
, it does not show me my configuration as I would expect it, but just what seems to be a very generic help message.
It is my first time, I am using a logger. Does anyone know what the problem might be?
Update : This helped me as a first step:
BasicConfigurator replacement in log4j2
I deleted the XML-file and used the new
Configurator.initialize(new DefaultConfiguration());
Configurator.setRootLevel(Level.INFO);
And now it works at least in so far as it prints to the console. However, I am still not able to make it use the log4j2.xml file. I tried naming it log4j2-test.xml, too. ( Source ) It did not make a difference.
Now it works. This is how I did it.
I set up a new project, with just a main-class and added a new xml-file with a file logger only at first, then added a logger to the console, too. I deleted cache in IntelliJ and deleted the Configurator-lines in the code.
This is the new XML-file log4j2.xml
that made it work:
<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="warn">
<Properties>
<Property name="basePath">log/${date:yyyy-MM-dd HH-mm-ss-SSS}</Property>
</Properties>
<!-- File Logger -->
<Appenders>
<!-- Console appender configuration -->
<Console name="Console-Appender" target="SYSTEM_OUT">
<PatternLayout>
<pattern>
%d{HH:mm:ss.SSS} %-5level %class{36} %L %M - %msg%xEx%n
</pattern>>
</PatternLayout>
</Console>
<RollingFile name="fileLogger"
fileName="${basePath}/Azul.log"
filePattern="${basePath}/app-%d{yyyy-MM-dd}.log">
<PatternLayout>
<pattern>[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n
</pattern>
</PatternLayout>
<Policies>
<TimeBasedTriggeringPolicy interval="1" modulate="true" />
<SizeBasedTriggeringPolicy size="10MB" />
</Policies>
<!-- Max 10 files will be created everyday -->
<DefaultRolloverStrategy max="10">
<Delete basePath="${basePath}" maxDepth="10">
<!-- Delete all files older than 30 days -->
<IfLastModified age="30d" />
</Delete>
</DefaultRolloverStrategy>
</RollingFile>
</Appenders>
<Loggers>
<Root level="info" additivity="false">
<appender-ref ref="fileLogger" />
<appender-ref ref="Console-Appender" level="info"/>
</Root>
</Loggers>
</Configuration>
It seems to me to have been a mistake somewhere in the xml-file that I just couldn't figure out where it is.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.