How to introduce and use the Apache Commons Logging framework
Apache Commons Logging is a universal log record framework. It provides a simple log record interface that allows developers to use a unified way in the code for logging.It can be integrated with different log record implementation (such as log4j, java Util logging, and Simple Logging Facade for Java, thereby providing a flexible log record option.
Using Apache Commons Logging, you need to introduce the following dependencies:
<dependencies>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
It is very simple to use Apache Commons Logging.The following is an example:
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
public class MyClass {
private static final Log log = LogFactory.getLog(MyClass.class);
public void doSomething() {
log.debug("Debug message");
log.info("Info message");
log.warn("Warning message");
log.error("Error message");
}
}
In the above code, we first introduced `ORG.APACHE.COMMONS. Logging.log` and` ORG.APACHE.COMMONS. Logging.logFactory`.Then, we create a static log recorder instance `log`, use the` logFactory.GetLog` method and pass the class name to get the instance.
Finally, we can use different methods of the `LOG` object to record different levels of log messages.For example, `log.debug` is used to record the logging of the debugging level,` log.info` is used to record the information level of the log message, `log.warn`Log messages at the level of error.
When we run the above code, the log message will be printed to the selected log record implementation (such as log4j or Java Util logging).
To sum up, Apache Commons Logging is an easy -to -use log record framework to achieve a unified log record in the code.It integrates through different log records and provides flexible log record options.By introducing the corresponding dependencies and using the `log` and` logFactory` class, you can easily use Apache Commons Logging in your application for log records.
Hope this article will help you!
