SLF4J
The Simple Logging Facade for Java (SLF4J) serves as a simple facade or abstraction for various logging frameworks, SLF4J allows the end-user to plug in the desired logging framework at deployment time.
| Supporting | Require |
| ————- |:—————————-:|
| java.util.logging |slf4j-jdk14-{version}.jar |
| logback |
| log4j |slf4j-log4j12-{version}.jar |
| stder |slf4j-simple-{version}.jar |
Example SLF4J code
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class LoggingExample {
public static void main(String[] args) {
Logger logger = LoggerFactory.getLogger(LoggingExample.class);
logger.info("userful information");
}
}
Default Logging Framework with Spring Boot
Spring boot provides a default starter for logging spring-boot-starter-logging. It is included by default in spring-boot-starter which is included in all other starters.
Integrate with Spring Boot + Log4j
please checkout manual https://logging.apache.org/log4j/2.x/
Maven Dependency
<dependencies>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.11.2</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.11.2</version>
</dependency>
</dependencies>
