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Spring Boot is a Java-based framework that simplifies the development of Spring-based applications. Through technologies such as automatic configuration and embedded servers, Spring Boot allows developers to quickly build and run Spring applications. Below, I will elaborate on the core concepts, advantages, development process, common configurations, and best practices of Spring Boot.

1. Core Concepts of Spring Boot

1. Auto-configuration

One of the core features of Spring Boot is its auto-configuration feature. It automatically configures Spring applications by analyzing project dependencies and beans in the classpath. Developers can application.properties orapplication.yml Add or modify properties in the file to override the automatic configuration.

2. Starter POMs

Spring Boot provides a set of starter POMs that contain all the basic libraries needed to develop Spring applications. For example,spring-boot-starter-web Contains Spring MVC and Tomcat dependencies, making the development of web applications easy and fast.

3. Embedded Server

Spring Boot supports embedded servers such as Tomcat, Jetty, and Undertow. This allows developers to run Spring Boot applications directly as standalone applications without deploying WAR packages to external servers.

4. Actuator

Spring Boot Actuator provides a series of production-ready features, such as health checks, auditing, and metric information collection. Through Actuator's endpoints, developers can monitor and manage Spring Boot applications.

2. Advantages of Spring Boot

1. Simplify development: Spring Boot greatly simplifies the development process of Spring applications through automatic configuration and startup dependencies.
2. Rapid deployment: Support for embedded servers allows Spring Boot applications to be easily packaged into executable jar packages for rapid deployment.
3. Easy to integrate: Spring Boot provides rich third-party library integration, such as database connection, cache, message service, etc., making application integration simple.
4. Monitoring and Management: The endpoints provided by Actuator can easily monitor and manage applications.
5. Community Support: Spring Boot has a huge community support, and developers can easily find solutions and best practices.

3. Spring Boot development process

1. Environment Construction

• Install JDK and Maven or Gradle.
• Create a Maven or Gradle project and add the Spring Boot starter dependency.

2. Write code

• Write the main class and use @SpringBootApplication annotation.
• Write business logic and controllers.
• Configure data source, transaction management, etc. (if required).

3. Configuration Files

• exist src/main/resources Create a directoryapplication.properties orapplication.yml File to configure application parameters.

4. Run and test

• Run the Spring Boot application using an IDE or command line tool.
• Write unit tests, integration tests, etc. to ensure application quality.

5. Packaging and deployment

• Use Maven or Gradle to package the application into an executable jar package.
• Deploy the jar package to the server or use Docker containerization for deployment.

4. Common configuration of Spring Boot

1. Application port

server.port=8080

2. Log Configuration

logging.level.org.springframework=INFO

3. Data source configuration

spring.datasource.url=jdbc:mysql://localhost:3306/dbname
spring.datasource.username=root
spring.datasource.password=password
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver

4. JPA Configuration

spring.jpa.hibernate.ddl-auto=update
spring.jpa.show-sql=true

5. Spring Boot Best Practices

1. Code clarity and modularity: Keep the code clean, modular, easy to maintain and extend.
2. Proper use of automatic configuration: Understand Spring Boot's automatic configuration mechanism to avoid unnecessary configuration coverage.
3. Security Configuration: Ensure the security of the application and use security frameworks such as Spring Security to protect the application.
4. Performance Optimization: Pay attention to the performance of the application and use technologies such as caching and asynchronous processing to improve performance.
5. Continuous Integration and Continuous Deployment：Use CI/CD process to ensure application quality and respond quickly to market changes.
6. Documentation and testing: Write detailed development documents and test cases to ensure the reliability and maintainability of the application.

VI. Conclusion

Spring Boot greatly simplifies the development, deployment, and management of Spring applications through its automatic configuration, startup dependencies, and embedded servers. Developers can focus more on the implementation of business logic without having to worry about the configuration and integration of the underlying framework. At the same time, Spring Boot provides rich third-party library integration and powerful monitoring and management capabilities, making applications more robust and easy to maintain. By following best practices