scala - 日志之slf4j的simple模式

第一步：

导入依赖

    <dependencies>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.25</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-simple -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-simple</artifactId>
            <version>1.7.25</version>
        </dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-nop</artifactId>
            <version>1.7.25</version>
        </dependency>

    </dependencies>

第二步：

编写API

import org.slf4j.{Logger, LoggerFactory}

object logUtil {
  var logger: Logger = LoggerFactory.getLogger(this.getClass)

  def main(args: Array[String]): Unit = {
    logger.info("111111111")
    logger.debug("22222222")
    logger.warn("33333333")
    logger.error("4444444")
  }
}

第三步：

效果