How to configure log4j in slf4j?

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slf4j How to proceed in log4j Configuration ?

The following is about slf4j Middle configuration log4j Method sharing , As shown below :

Step one :pom.xml add to log4j rely on

<dependency>
	<groupId>org.slf4j</groupId>
	<artifactId>slf4j-api</artifactId>
	<version>1.7.25</version>
</dependency>
<dependency>
	<groupId>log4j</groupId>
	<artifactId>log4j</artifactId>
	<version>1.2.17</version>
</dependency>
<dependency>
	<groupId>org.slf4j</groupId>
	<artifactId>slf4j-log4j12</artifactId>
	<version>1.7.25</version>
</dependency>
 perhaps 
<dependency>
  <groupId>org.slf4j</groupId>
  <artifactId>slf4j-log4j12</artifactId>
  <version>1.8.0-alpha2</version>
</dependency>

Step two ： To configure log4j

log4j Configuration details log4j.xml Full profile or log4j.properties Detailed explanation of the complete configuration file

Test code

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class LoggerTest {
    private static final Logger logger = LoggerFactory.getLogger(LoggerTest.class);

    public static void main(String[] args) {
        logger.fatal(" Fatal error ");
	    logger.error(" A serious warning ");
	    logger.info(" General information ");
	    logger.debug(" Debugging information ");
    }
}

 matters needing attention :
    Here want to use SLF4J To write the code for logging 
    But can't use log4j Write a log 
  When you need to switch other logging frameworks, such as logback Just change the dependency