Quick Start: Integrating Scala Logging Box in Java Class Library
Quick Start: Integrating the Scala Logging Framework into Java Class Libraries
Introduction:
Scala Logging is a powerful and easy-to-use logging framework that provides a concise API for logging in Scala applications. However, if your project is written in Java and you want to leverage the advantages of Scala Logging, this article will introduce how to integrate the Scala Logging framework into the Java class library.
Step:
1. Introducing dependencies: Firstly, you need to add the Scala Logging framework to the dependencies of the Java class library. You can add the following dependencies in the pom.xml or build.gradle file:
<!-- Maven -->
<dependency>
<groupId>com.typesafe.scala-logging</groupId>
<artifactId>scala-logging_2.12</artifactId>
<version>3.9.2</version>
</dependency>
// Gradle
implementation 'com.typesafe.scala-logging:scala-logging_2.12:3.9.2'
Please ensure to replace the version number to match your project configuration.
2. Create a logger: Next, you need to create a logger in the Java class. You can use the 'LoggerFactory' class provided by Scala Logging to implement it. For example, the following code demonstrates how to create a logger for a Java class named "MyClass":
import com.typesafe.scalalogging.Logger;
import org.slf4j.LoggerFactory;
public class MyClass {
private final Logger logger = Logger(LoggerFactory.getLogger(MyClass.class));
public void doSomething() {
logger.info("Doing something...");
//Other operations
}
}
Note that when using Scala Logging in Java classes, the 'LoggerFactory' is actually obtained from the SLF4J library.
3. Logging: Your Java class is now ready to use Scala Logging for logging. You can use the 'logger' object in class methods to record different levels of log messages. Here are some examples:
public class MyClass {
private final Logger logger = Logger(LoggerFactory.getLogger(MyClass.class));
public void doSomething() {
logger.trace("Trace level message");
logger.debug("Debug level message");
logger.info("Info level message");
logger.warn("Warning level message");
logger.error("Error level message");
}
}
4. Configure logging: Finally, you can configure logging behavior as needed. For the Scala Logging framework in the Java class library, you can define the required logging configuration in the 'logback. xml' or 'logback test. xml' files. Here is a simple example configuration:
<configuration>
<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>%date [%thread] %-5level %logger{40} - %msg%n</pattern>
</encoder>
</appender>
<root level="INFO">
<appender-ref ref="CONSOLE"/>
</root>
</configuration>
This configuration outputs log messages to the console, including timestamp, thread name, log level, logger name, and log message itself.
Summary:
By following the above steps and integrating the Scala Logging framework into the Java class library, you can easily leverage the powerful features of Scala Logging for logging in Java projects. Creating a logger, recording different levels of log messages, and configuring logging behavior will provide you with a better logging experience. I hope this article can help you quickly get started on integrating the Scala Logging framework into Java class libraries.
