Table of contents
1. Spring Boot
Spring Boot is an open source Java framework that simplifies the development process of Spring applications. It adopts a concise coding method and the principle of convention over configuration, allowing developers to quickly build independent, deployable Spring applications.
Spring Boot provides automatic configuration features. By analyzing the project's dependencies, it can automatically configure Spring applications according to the needs of the project. In this way, developers can focus on the development of business logic without manually configuring the complex Spring framework.
Spring Boot also provides an embedded container for building independent, executable Spring applications, such as Tomcat, Jetty, etc. In this way, developers can package the application into an independent executable file for easy deployment and distribution.
Spring Boot also provides a wealth of development tools and plug-ins, simplifying the project construction and deployment process. It integrates commonly used development frameworks and technologies, such as Spring MVC, Spring Data JPA, Thymeleaf, etc., allowing developers to quickly build a fully functional application.
In general, Spring Boot is a framework that makes Spring application development simpler, faster and more efficient. It greatly improves development efficiency and reduces the workload of developers. It is an excellent choice for Java development.
2. Log
SpringBoot logging refers to the mechanism for recording and managing logs in SpringBoot applications. Logs are a very important part of application development and operation and maintenance. They can help developers and operation and maintenance personnel track the running status of applications, troubleshoot errors, and analyze performance problems.
SpringBoot provides integrated support for a variety of logging frameworks, including commonly used Logback, Log4j2, and Java Util Logging. Developers can choose and configure a suitable logging framework according to their own needs.
SpringBoot's log configuration is very flexible, and log output and management can be achieved through simple configuration files or annotations. Common log configurations include log level, output format, output location, log file cutting, etc.
SpringBoot also provides some special log annotations, such as @Slf4j annotations, which can simplify the creation and use of log objects.
By properly configuring and using SpringBoot logs, developers can easily record application running logs, including debugging information, error information, performance information, etc. At the same time, through the information recorded in the log, developers can also better optimize the application and troubleshoot problems.
In summary, SpringBoot log is a mechanism for recording and managing logs in SpringBoot applications. It is a very important part of application development and operation and maintenance. It can help developers and operation and maintenance personnel track the running status of applications and troubleshoot errors. and analyze performance issues.
3. Logger
Logger is a logger used to record log information in applications. It is one of the core components of the logging framework. Logger provides a set of methods that developers can use to record different levels of log information, such as debugging information, warning information, error information, etc.
Logger is usually associated with a log level (Level), and each log level corresponds to a different information importance. Common log levels include TRACE, DEBUG, INFO, WARN, ERROR, etc. Developers can select the appropriate log level according to their needs to control the detailed level of log output.
Logger also allows developers to specify different output destinations for log information, such as console, file, database, etc. Developers can specify the location and format of log output through configuration files or code.
The use of Logger is very simple. Developers only need to obtain the Logger object and then call the corresponding method to record the log information. Typical logging methods include log.debug(), log.info (), log.warn(), log.error(), etc.
The benefits of using Logger to record logs include:
- The running status of the application can be tracked, including debugging information, exception information, etc.
- It can help developers troubleshoot errors and analyze performance issues.
- The running log of the application can be provided to facilitate future backtracking and review.
In summary, Logger is a component used to record log information in applications. It allows developers to record different levels of log information as needed and output it to a specified location. Using Logger can provide valuable running logs to facilitate developers to troubleshoot errors and analyze application performance.
4. @Slf4j
@Slf4j is an annotation used to simplify the process of creating Logger objects in Java classes. It is an annotation provided by the Lombok library. By adding the @Slf4j annotation to the class, developers can automatically generate a Logger object named log in the class. After using the @Slf4j annotation, developers can record log information directly through the log object without manually creating a Logger object.
The @Slf4j annotation is used with common logging frameworks, such as Logback, Log4j, etc., to easily record and manage logs in applications. It provides a set of methods corresponding to the Logger object, such as log.debug(), log.info (), log.warn(), log.error(), etc. Developers can choose appropriate methods to record different levels of log information as needed. The @Slf4j annotation can also automatically help developers generate private, static Logger objects and set corresponding names for them. In this way, developers can use the log object anywhere in the class to record logs without having to manually create a Logger object every time.
The use of @Slf4j annotation is very simple, just add @Slf4j annotation to the class. Developers also need to introduce the dependency of the Lombok library into the project's build tool to make the annotations take effect. At the same time, you can also configure the Logger level, output location, format, etc. as needed.
In summary, @Slf4j is an annotation used to simplify the process of creating Logger objects in Java classes. It automatically generates Logger objects, allowing developers to easily record and manage log information in classes. Using @Slf4j annotations can reduce duplicate code and improve development efficiency.