Comparison of the "Logging Api" framework in the Java class library and other log framework

Comparison of the logging API framework in the Java class library and other log framework preface: In software development, logs are an important practice to record information during the application of applications.The logging API framework in the Java class library is a log framework that comes with the Java platform, but there are other mature log frames to choose from.This article will compare the Logging API framework in the Java class library with other common log frameworks to help developers choose the best log framework suitable for their applications. 1. Logging API framework in Java Library -Java 1.4 introduced the logging API framework, which is a framework of a charming management log information.It provides a standard Java class library to record log information of the application. -Logging API is a built -in framework for the Java platform that can be used directly without installation of additional dependencies. -This framework supports the definition and record logs of different levels in the application.Common log levels include: SEVERE, Warning, Info, and Fine. -Logging API provides the concept of log recorder (Logger) and processor (Handler).Developers can set up information such as logging levels, output positions and other information through configuration file settings. 2. Other log frameworks Although the logging API framework in the Java class library is comes with the Java platform, in actual development, developers often choose to use other log frameworks, such as log4j, logback, and SLF4J.Below will compare their characteristics one by one with the Logging API framework. - Log4j: LOG4J is an open source Java log framework provided by Apache, which is widely used in the Java project.Compared with the logging API, LOG4J has more functions and configuration options.The following are some characteristics of log4j: -The richer log level, such as: trace, debug, info, warn, error, and fata. -The log information can be output to multiple destinations, such as console, files, databases, etc. -In support flexible log format settings and output configuration. -At the configuration file for dynamic log configuration. - Logback: LOGBACK is the Java log frame developed by the founder of LOG4J, which can be regarded as an upgraded version of LOG4J.The following are some characteristics of logback: -A more performance and lower resources. -In the support of asynchronous log records, which will not affect the performance of the application. -The configuration is more flexible, and configuration can be configured by XML or Groovy. -Super a strong rolling log function than LOG4J. - SLF4J: SLF4J is a log facade frame, which provides a unified log interface that can be integrated with multiple underlying logs.The following are some of the characteristics of SLF4J: -SLF4J itself is not a specific log implementation framework, but provides a set of interfaces that allow developers to easily switch and integrate different log frameworks. -In the application in the application, use SLF4J for log records, and do not need to care about the specific log implementation framework of the underlying layer. -It can be seamlessly integrated with common logs such as logback, log4j and other common logs. 3. Comparison and choice When comparing the logging API framework and other log frameworks in the Java class library, the following aspects need to be considered: -Functional requirements: Different projects have different logging requirements, and the required functions and configuration options need to be comprehensively evaluated. -The performance and resource occupation: Some log frames have higher performance and lower resource occupation compared to the logging API. -Se community and support: Understand the maintenance personnel and user communities of different log frames to get better support and feedback. -Tage and migration cost: Considering whether it is necessary to integrate with other systems and frameworks, and the cost of migrating from Logging API to other frameworks. The best log framework needs to be judged according to the needs of specific items.For simple applications, the logging API framework in the Java class library may be enough to meet the needs; for large and complex projects, other log frameworks may be more suitable. Limited by space, a simple example of using Logging API to record logs: import java.util.logging.Level; import java.util.logging.Logger; public class LoggingExample { public static void main(String[] args) { Logger logger = Logger.getLogger(LoggingExample.class.getName()); logger.info ("This is a information log"); Logger.log (Level.severe, "This is a serious mistake"); logger.log (level.warning, "This is a warning log"); } } In the above examples, we can record the log information of different levels by obtaining the Logger instance and using its different methods.Outputting the log to the console or other locations needs to be set according to the specific configuration.