log4j 配置

maven 配置

<dependency>  
<groupId>org.apache.logging.log4j</groupId>  
<artifactId>log4j-api</artifactId>  
<version>2.23.1</version>  
</dependency>  
<dependency>  
<groupId>org.apache.logging.log4j</groupId>  
<artifactId>log4j-core</artifactId>  
<version>2.23.1</version>  
</dependency>  
  
<dependency>  
<groupId>org.apache.logging.log4j</groupId>  
<artifactId>log4j-slf4j-impl</artifactId>  
<version>2.23.1</version>  
</dependency>

代码

val logger=LogManager.getLogger(this.getClass)