Java >> SLF4J >> Tutorial
Source: http://www.javavillage.in/slf4j-with-log4j.php
1. Add dependencies
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.13</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.13</version>
</dependency>
2. Add log4j.properties to src/main/resources
# Root logger option
log4j.rootLogger=INFO, file, stdout
# Direct log messages to stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} [%t] %-5p:: %m%n
# Direct log messages to a log file
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=D:\\Workspace\\Tutorials\\slf4j\\log\\tutorial.log
log4j.appender.file.MaxFileSize=10000KB
log4j.appender.file.MaxBackupIndex=10
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} [%t] %-5p:: %m%n
3. Use LoggerFactory to create and use Logger
private static Logger LOGGER = LoggerFactory.getLogger(SLF4JSample.class);
public static void main(String[] args) {
LOGGER.info("Hi, Welcome to SLF4J exmaple");
}