In this tutorial, we're gonna build a Spring Boot, Hibernate CRUD example that interacts with MySQL database. You'll know:
- How to configure Spring Data JPA, Hibernate to work with MySQL Database
- How to define Data Models and Repository interfaces
- Way to create Spring Rest Controller to process HTTP requests
- Way to use Spring Data JPA to interact with MySQL Database
Full Article: Spring Boot, Hibernate, MySQL example: Build CRUD app
Overview of Spring Boot, Hibernate, MySQL example
We will build a Spring Boot + MySQL CRUD example for a Tutorial application in that:
- Each Tutotial has id, title, description, published status.
- Apis help to create, retrieve, update, delete Tutorials.
- Apis also support custom finder methods such as find by published status or by title.
These are APIs that we need to provide:
| Methods | Urls | Actions |
|---|---|---|
| POST | /api/tutorials | create new Tutorial |
| GET | /api/tutorials | retrieve all Tutorials |
| GET | /api/tutorials/:id | retrieve a Tutorial by :id
|
| PUT | /api/tutorials/:id | update a Tutorial by :id
|
| DELETE | /api/tutorials/:id | delete a Tutorial by :id
|
| DELETE | /api/tutorials | delete all Tutorials |
| GET | /api/tutorials/published | find all published Tutorials |
| GET | /api/tutorials?title=[keyword] | find all Tutorials which title contains keyword
|
- We make CRUD operations & finder methods with Spring Data JPA's
JpaRepository. - The database could be PostgreSQL or MySQL depending on the way we configure project dependency & datasource.
Technology
- Java 8
- Spring Boot 2 (with Spring Web MVC, Spring Data JPA)
- MySQL
- Maven
Project Structure
Let me explain it briefly.
– Tutorial data model class corresponds to entity and table tutorials.
– TutorialRepository is an interface that extends JpaRepository for CRUD methods and custom finder methods. It will be autowired in TutorialController.
– TutorialController is a RestController which has request mapping methods for RESTful requests such as: getAllTutorials, createTutorial, updateTutorial, deleteTutorial, findByPublished...
– Configuration for Spring Datasource, JPA & Hibernate in application.properties.
– pom.xml contains dependencies for Spring Boot and MySQL/PostgreSQL.
Video
This is demo video and brief instruction of Spring Boot Rest Apis with Hibernate, MySQL example using Spring Data JPA:
Source Code
For step by step instruction and Github, please visit:
Spring Boot, Hibernate, MySQL example: Build CRUD app
Further Reading
If you want to add Pagination to this Spring project, you can find the instruction at:
Spring Boot Pagination & Filter example | Spring JPA, Pageable
To sort/order by multiple fields:
Spring Data JPA Sort/Order by multiple Columns | Spring Boot
Handle Exception for this Rest APIs is necessary:
- Spring Boot @ControllerAdvice & @ExceptionHandler example
- @RestControllerAdvice example in Spring Boot
Or way to write Unit Test for the JPA Repository:
Spring Boot Unit Test for JPA Repositiory with @DataJpaTest
You can also know:
- how to deploy this Spring Boot App on AWS (for free) with this tutorial.
- way to upload an Excel file and store the data in MySQL database with this post
- upload CSV file and store the data in MySQL with this post.
More Practice:
- Secure Spring Boot App with Spring Security & JWT Authentication
- Spring Boot Rest XML example – Web service with XML Response
- Spring Boot + GraphQL + MySQL example
- Spring Boot Multipart File upload example
- Spring Boot Pagination and Sorting example
Dockerize: Docker Compose Spring Boot and MySQL example
Fullstack:
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