SCALA LOGGING framework installation and configuration tutorial

Scala Logging is a powerful log framework that helps developers to effectively record logs in the Scala application.This article will provide you with installation and configuration tutorials for the Scala Logging framework, as well as complete programming code and related configuration descriptions that need to be used. 1. Install the SCALA LOGGING framework To use the Scala Logging framework, you need to add corresponding dependencies to the project.In your project construction file (such as build.sbt), add the following dependencies: scala libraryDependencies += "com.typesafe.scala-logging" %% "scala-logging" % "3.9.2" After adding the dependencies, re -build the project to make it take effect. 2. Configure the scala logging framework The SCALA Logging framework uses SLF4J (Simple Logging Facade for Java) as its log facade, and provides the actual implementation of the logs with various back -end (such as log4j, logback, etc.). You can choose any log back end of SLF4J according to your needs and configure the corresponding configuration in the project.Here is a logback as an example. 2.1 Add logback dependency item Add the dependencies of logback to the construction file of the project.In build.sbt, add the following dependencies: scala libraryDependencies += "ch.qos.logback" % "logback-classic" % "1.2.3" 2.2 Create a logback configuration file Create a file called logback.xml under the resource directory of the project (usually SRC/main/Resources), and configure it according to the following example configuration file: <configuration> <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender"> <encoder> <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern> </encoder> </appender> <root level="info"> <appender-ref ref="STDOUT" /> </root> </configuration> The above configuration outputs the log to the console by configuring a consoleappender called Stdout.At the same time, it is equipped with a root level of INFO, which transmits all log events to Stdout Appender. You can modify the configuration file as needed to meet the needs of specific log records. 3. Use the SCALA Logging framework After the configuration is completed, you can use the Scala Logging framework to record the log in the Scala application.The following is a simple example: scala import com.typesafe.scalalogging.Logger object Main extends App { val logger = Logger("myLogger") logger.debug("This is a debug message.") logger.info("This is an info message.") logger.warn("This is a warning message.") logger.error("This is an error message.") } In the above example, we first created a Logger instance called Mylogger through the Logger method.We then record different log information using different log levels (Debug, Info, Warn, and ERROR. According to the log level you set in the LogBack configuration file, the log event with a level level that is greater than or equal to the configuration level will be recorded and output. The above is the installation and configuration tutorial of the Scala Logging framework.By following the above steps and combined with the appropriate logback configuration, you can easily record the log in the SCALA application.I wish you a happy use!