spring-boot-best-practice

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:rocket: This repository provides practical Spring Boot examples covering mainstream topics and real development scenarios.

:star: This project will continue to be updated. To stay on track, please click Star in the upper-right corner.

:fire: Why Learn Spring Boot?

This repository has been adapted to Spring Boot 4.x. The current baseline is Spring Boot 4.0.3, with Spring Framework 7.x and Java 21.

All examples are built around real-world scenarios, making this repository suitable both for learning Spring Boot and for referencing Spring Boot 4.x upgrades and migrations.

Spring has long been one of the most important frameworks in the Java ecosystem. It was once commonly used together with Struts2 and Hibernate as the classic SSH stack for Java Web development. Around 2013, it evolved alongside Spring MVC and MyBatis into the SSM stack, which became the mainstream Java Web development solution for many years.

To simplify the learning curve of the Spring ecosystem, Spring Boot was introduced in 2014. It helps developers use Spring components more easily and efficiently. Spring Boot is built on top of Spring, Spring MVC, and related frameworks. It depends on those underlying frameworks rather than existing independently.

Learning Spring Boot makes it easier to master core Spring components, and it is also the foundation for learning Spring Cloud and microservice architecture, because Spring Cloud is built on top of Spring Boot.

Spring Boot reflects real enterprise demand. In job descriptions and interview skill lists for Java developers and architects, Spring Boot is almost always a required skill. If you want to become a qualified Java engineer and truly understand the Spring ecosystem, Spring Boot is a necessary step.

:pushpin: Module Overview

This repository uses a Maven multi-module structure and covers core Spring Boot capabilities, data access, messaging middleware, operations and governance, container deployment, and engineering practices. It is designed for both topic-based learning and module-based verification.

Module Name	Description
spring-boot-quick-start	Quick start and basic bootstrapping example for Spring Boot.
spring-boot-mail	Email sending example with Spring Boot.
spring-boot-web	Spring MVC web examples, including message conversion, interceptors, and servlet registration.
spring-boot-rest-services	REST service call examples including RestTemplate, RestClient, WebClient, and more.
spring-boot-webflux	Reactive development examples with Spring WebFlux and WebClient.
spring-boot-logging	Logging system and logging configuration examples in Spring Boot.
spring-boot-test	Spring Boot testing examples, including MockMvc, MockBean, and JSON tests.
javastack-spring-boot-starter	Example of developing a custom Spring Boot Starter.
javastack-spring-boot-starter-sample	Example of integrating and using the custom Starter.
spring-boot-properties	Configuration file, property binding, and custom configuration class examples.
spring-boot-redis	Redis integration, cache access, and common operation examples.
spring-boot-mongodb	MongoDB integration and Spring Data MongoDB examples.
spring-boot-elasticsearch	Elasticsearch integration and Spring Data Elasticsearch examples.
spring-boot-session	Distributed session management examples with Spring Session.
spring-boot-jetty	Example of using Jetty as the embedded web container.
spring-boot-docker	Docker image building, layered packaging, and container deployment examples.
spring-boot-features	Examples of common Spring Boot features and startup behavior.
spring-boot-application	Application startup, async invocation, and application-level capability examples.
spring-boot-datasource	Multi-datasource, Druid, and JDBC/JdbcClient data access examples.
spring-boot-jpa	Spring Data JPA persistence examples.
spring-boot-activemq	ActiveMQ integration examples.
spring-boot-rabbitmq	RabbitMQ integration examples.
spring-boot-kafka	Kafka integration examples.
spring-boot-cache	Spring Cache abstraction and cache annotation examples.
spring-boot-mybatis	MyBatis data access examples.
spring-boot-mybatis-plus	MyBatis-Plus enhanced data access examples.
spring-boot-flyway	Flyway database versioning and migration examples.
spring-boot-mapstruct	Object mapping examples with MapStruct.
spring-boot-jasypt	Configuration encryption and decryption examples with Jasypt.
spring-boot-knife4j	Knife4j / OpenAPI integration examples for API documentation.
spring-boot-tinylog	Tinylog logging framework integration examples.
spring-boot-admin-server	Spring Boot Admin Server monitoring center example.
spring-boot-admin-client	Spring Boot Admin Client integration example.
spring-boot-schedule	Scheduled task examples with Spring scheduling.
spring-boot-quartz	Quartz scheduler integration examples.
spring-boot-graalvm	GraalVM / Native Image related examples.
spring-boot-war	WAR packaging and external servlet container deployment examples.
spring-boot-actuator	Actuator endpoints and application governance examples.
spring-boot-aop	Spring AOP examples.

:heart: Spring Boot Learning Materials

Here is a complete set of Spring Boot learning materials, including underlying implementation principles and practical coding examples, designed to help you quickly master every major aspect of Spring Boot.

Contents include:

• Spring Boot Hello World
• Returning JSON data with Spring Boot
• Using alternative JSON libraries in Spring Boot
• Global exception handling in Spring Boot
• Connecting to a database with Spring Boot JPA
• Configuring JPA in Spring Boot
• Saving data with Spring Boot JPA
• Saving data with Spring Boot JdbcTemplate
• Common Spring Boot configuration
• Static resource handling in Spring Boot
• Scheduled tasks in Spring Boot
• Invoking Beans from ordinary classes in Spring Boot
• Using template engines in Spring Boot
• Integrating JSP with Spring Boot
• Integrating Servlets with Spring Boot
• Integrating Filters and Listeners with Spring Boot
• Using HandlerInterceptor in Spring Boot
• Startup tasks with CommandLineRunner
• Unit testing with Spring Boot
• Reading system environment variables in Spring Boot
• Using custom properties in Spring Boot
• Changing the default package scanning path
• Custom startup banners in Spring Boot
• Importing Spring XML configuration files
• Hot deployment in Spring Boot
• Monitoring and managing production environments
• Spring Boot Starter in depth
• Version management in Spring Boot dependencies
• File upload in Spring Boot
• Integrating Redis cache with Spring Boot
• Spring Cache in Spring Boot
• Integrating Ehcache with Spring Boot
• Distributed session sharing in Spring Boot
• ......

A total of 108 pages, very comprehensive.

How to get it:

This tutorial is shared for free. Scan the QR code below and follow the Java技术栈 WeChat public account:

After following the account, send the keyword: 666 in the backend, and the public account will automatically deliver the materials to you.