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1. Development background of springboot
To understand springboot, we first need to understand the development background of Spring Boot.
The development background of Spring Boot can be traced back to the birth and evolution of Spring Framework.
First of all, Spring Framework is a very popular Java development framework that provides rich features and modules to simplify the development of enterprise-level Java applications. However, over time, Spring Framework has become more complex and larger, and configuration has become more cumbersome. Developers need to spend a lot of time and effort dealing with various configurations and dependencies.
To solve this problem, the Spring team released Spring Boot in 2012. Spring Boot aims to simplify the development process of Spring applications, providing automatic configuration and the principle of convention over configuration. Its goal is to allow developers to quickly build a Spring-based application without having to manually configure various cumbersome settings.
The development background of Spring Boot is also related to the rise of cloud computing and microservice architecture. As cloud computing becomes more popular, developers need to build applications that are scalable and easy to deploy. The emergence of microservices architecture has also prompted developers to split applications into small and independent services. Spring Boot provides a simple and efficient way to build and manage these microservices.
In addition, Spring Boot also benefits from the development of the Java ecosystem. The release of Java 8 brings many new language features and libraries, making it easier to develop Java applications. Spring Boot is tightly integrated with Java 8, taking full advantage of these new features and libraries.
In general, the development background of Spring Boot is to solve the problems of complex configuration and cumbersome dependencies of Spring Framework, while adapting to the development trend of cloud computing and microservice architecture. It simplifies the development process of Spring applications, provides an efficient development experience and powerful functions, and has become one of the preferred frameworks for Java developers.
2. What is springboot?
Spring Boot is a framework for building standalone, production-grade Spring applications. It simplifies the development process of Spring applications and provides automatic configuration and the principle of convention over configuration, allowing developers to focus more on the implementation of business logic without spending too much time on configuration.
Using Spring Boot, you can quickly build a Spring-based application without having to manually configure various tedious settings. It provides a concept of starter dependencies. You only need to add the required starter dependencies, and Spring Boot will automatically configure the corresponding functions for you.
Here are some advantages of using Spring Boot:
1. 简化配置：Spring Boot automatically configures many common configurations, reducing developers' configuration workload. You simply enable the required functionality by adding starter dependencies, and Spring Boot automatically configures the application based on your dependencies.
2. 内嵌服务器：Spring Boot has built-in common web servers such as Tomcat and Jetty. You do not need to manually deploy applications to a separate server. You only need to run an executable JAR file.
3. 自动化依赖管理：Spring Boot manages dependencies through starter dependencies, which automatically resolves dependency conflicts and version compatibility issues, simplifying the dependency management process.
4. 生产级别的监控和管理：Spring Boot provides many tools and plug-ins for monitoring and managing applications, such as Spring Boot Actuator, which can easily view the running status, performance indicators, etc. of the application.
5. 外部化配置：Spring Boot supports the separation of configuration information from the code, and can be configured using property files, YAML files, environment variables and other methods to facilitate the deployment and configuration of applications in different environments.
3. The status of springboot
Spring Boot plays a very important role in today's Internet technology field. It has become one of the preferred frameworks for Java developers to build applications and is widely used in the industry.
首先，Spring Boot simplifies the development process of Spring applications and provides automatic configuration and the principle of convention over configuration, allowing developers to focus more on the implementation of business logic without spending too much time on configuration. This enables developers to develop high-quality applications more quickly.
其次，Spring Boot provides a wealth of functions and modules, allowing developers to easily build various types of applications, including web applications, RESTful APIs, batch applications, message queue applications, etc. It also integrates with many popular open source projects and technologies, such as Spring Data, Spring Security, Hibernate, Redis, etc., providing more powerful functions and flexibility.
另外, Spring Boot is also closely integrated with cloud computing and microservice architecture. It provides a simple and efficient way to build and manage microservices, allowing developers to quickly build scalable and easy-to-deploy applications. At the same time, Spring Boot provides support for containerization technologies such as Docker and Kubernetes, making application deployment and management more convenient.
此外, Spring Boot has an active community and a large user base. Developers can obtain various technical support and solutions through the community, and can also share their experience and knowledge. This allows Spring Boot to continue to develop and evolve, maintaining its leading position in the technology field.
It simplifies the development process, provides rich functions and modules, is closely integrated with cloud computing and microservices, and has a large user group and active community. Whether building simple applications or complex enterprise-level applications, Spring Boot is one of the preferred frameworks for developers.
4. Development steps
In Spring Boot, developing code mainly involves the following aspects:
1. 依赖管理： Introduce the required functional modules by adding the corresponding dependencies in the project's pom.xml (Maven) or build.gradle (Gradle) file. Spring Boot provides a series of Starter dependencies, and you can select the corresponding Starter dependencies according to your needs without manually configuring various dependencies.
2. 主类:In a project, you need to create a main class, usually marked with @SpringBootApplicationan annotation. This main class is the entrance to the entire application, and it will automatically scan and load other components.
3. 控制器：In Spring Boot, you can handle HTTP requests by creating a controller class. Mark a class with @RestControllerannotations, and then use @RequestMappingother annotations to define request mapping and processing methods.
4. 业务逻辑：In the controller, you can call other components or services to handle business logic. You can use @Autowiredannotations to automatically inject other components into the controller to achieve dependency injection between components.
5. 数据访问：Spring Boot provides support for database access, and you can use Spring Data JPA, MyBatis and other frameworks to simplify database operations. By defining entity classes and warehouse interfaces, you can easily perform database addition, deletion, modification and query operations.
6. 配置文件：Spring Boot supports multiple types of configuration files, such as application.properties, application.yml, etc. Various configuration items can be set in the configuration file, such as database connection information, log level, etc. Spring Boot will automatically load these configurations without additional configuration code.
7. 日志记录：Spring Boot integrates commonly used logging frameworks, such as Logback, Log4j, etc. Through simple configuration, application logs can be managed and recorded.
8. 单元测试：In Spring Boot, you can use testing frameworks such as JUnit to write unit test code. By simulating various scenarios and situations, the correctness and stability of the application can be verified.
Spring Boot's development code is relatively simple. With reasonable annotations and configurations, you can quickly build a fully functional application. Developers only need to focus on the implementation of business logic without paying too much attention to cumbersome configuration and dependency management. This makes the development process more efficient and enjoyable.