SCALA LOGGING Framework Introduction: Logging in the Java class library

SCALA Logging is a framework of a Java log record, which provides a powerful log record function for the SCALA application.This article will introduce the characteristics, usage, and related program code and configuration of the Scala Logging framework. Features: 1. Flexibility: Scala Logging supports a variety of log recorders, including log4j, SLF4J, etc., you can choose the appropriate log recorder according to the needs of the application. 2. Simple and easy to use: Use Scala Logging, you only need to simply import the corresponding packages, and call the corresponding method to complete the logging operation. 3. High performance: Scala logging optimizes log records. While ensuring that the log record function is strong, minimize the impact on application performance. 4. Flexible configuration: Scala logging supports flexible log record configuration methods, which can be configured by configuration file or programming. usage: 1. Add dependencies: Add SCALA LOGGING dependency items to the construction file of the project, for example, add the following dependencies to SBT: scala libraryDependencies += "com.typesafe.scala-logging" %% "scala-logging" % "3.9.4" 2. Import package: Import related packages in a class need to use the logging function: scala import com.typesafe.scalalogging.Logger 3. Create a logger object: Create a logger object in the class to record log messages: scala val logger = Logger(getClass) 4. Record log: Use the logger object to call the corresponding record method, such as: scala logger.debug("Debug message") logger.info("Info message") logger.error("Error message", exception) 5. Configuration log recorder: According to different log recorders used, the corresponding configuration is performed. If you use log4j, you need to write the log4j.properties file for configuration. Example configuration file (log4j.properties): properties log4j.rootLogger=DEBUG, stdout log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n The above is the introduction and usage method of the SCALA Logging framework. This framework provides a powerful logging function to facilitate developers to manage and monitor the log in the application.Through simple configuration and calls, the records and management of various log information in the application can be easily realized.