Spring Boot: Samples & Tutorials

Samples and tutorials for Spring Boot modules such as, but not limited to, Spring Data, Spring Batch, Spring Cloud, Spring Security, Spring GraphQL, and Spring Test. Each tutorial is equipped with source code in individual submodules and can be found on GitHub.

Motivation

While it is common to find Spring Boot tutorials on the Internet, it is challenging to find tutorials that are up-to-date and include automated tests to demonstrate the implementation and ensure stability.

Commitment

Continual improvement is fundamental in software development. This repository is committed in ensuring adherence to best practices and keeping all dependencies up-to-date. The quality of these tutorials and the knowledge imparted is, and always will be, my primary goal.

With the help of Dependabot, each tutorial is also kept up-to-date with the latest dependencies. Currently, we are using Java Temurin 21 with Spring Boot 3.3.0.

Topics

Topic	Description
Spring Batch: Batch Job With REST API source	Spring Batch job that reads information from REST API
Spring Batch: Skip Specific Data	Skip processing specific data based on business logic in Spring Batch
Spring Cloud Environment Repository	Store environment properties in MySQL database with Spring Cloud Environment Repository
Spring Data Domain Events	Publish Domain Events with Spring Data
Spring Data Envers Audit	Enable with Entity Revisions using Spring Data Envers
Spring Data JPA Audit	Enable Audit with Spring Data JPA
Spring Data JPA: Global Filtered Query	Implement global filtered query with Spring Data JPA by defining repositoryBaseClass
Spring Data MongoDB Audit	Enable Audit with Spring Data MongoDB
Spring Data MongoDB: Full Text Search	Implement MongoDB Full Text Search with Spring Data MongoDB
Spring Data MongoDB: Transactional	Enable @Transactional support for Spring Data MongoDB
Spring Data REST: Validation	Perform validation with Spring Data REST
Spring GraphQL Server	Implement GraphQL server with Spring GraphQL Server
jOOQ	Implement an alternative to Jpa using jOOQ and Gradle
LangChain4J	Implement a Historian powered by OpenAI using LangChain4J
Spring Test: Load data with Testcontainers	Load test data with Testcontainers instead of BeforeEach
Spring Test: Test Execution Listeners	Implement custom TestExecutionListener to manage data in tests
Spring Test: Integration with RestAssured	Implement Behaviour Driven Development with RestAssured