# ![RealWorld Example App using Kotlin and Spring](example-logo.png)

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> ### Spring boot + MyBatis codebase containing real world examples (CRUD, auth, advanced patterns, etc) that adheres to the [RealWorld](https://github.com/gothinkster/realworld-example-apps) spec and API.

This codebase was created to demonstrate a fully fledged fullstack application built with Spring boot + Mybatis including CRUD operations, authentication, routing, pagination, and more.

For more information on how to this works with other frontends/backends, head over to the [RealWorld](https://github.com/gothinkster/realworld) repo.

# How it works

The application uses Spring boot (Web, Mybatis).

* Use the idea of Domain Driven Design to separate the business term and infrastruture term.
* Use MyBatis to implement the [Data Mapper](https://martinfowler.com/eaaCatalog/dataMapper.html) pattern for persistence.
* Use [CQRS](https://martinfowler.com/bliki/CQRS.html) pattern to separate the read model and write model.

And the code organize as this:

1. `api` is the web layer to implement by Spring MVC
2. `core` is the business model including entities and services
3. `application` is the high level services for query with the data transfer objects
4. `infrastructure`  contains all the implementation classes as the technique details

# Security

Integration with Spring Security and add other filter for jwt token process.

The secret key is stored in `application.properties`.

# Database

It uses a H2 in memory database (for now), can be changed easily in the `application.properties` for any other database.

# Getting started

You need Java 8 installed.

    ./gradlew bootRun

To test that it works, open a browser tab at http://localhost:8080/tags .  
Alternatively, you can run

    curl http://localhost:8080/tags

# Try it out with [Docker](https://www.docker.com/)

You need Docker installed.
	
	docker-compose up -d

# Try it out with a RealWorld frontend

The entry point address of the backend API is at http://localhost:8080, **not** http://localhost:8080/api as some of the frontend documentation suggests.

# Run test

The repository contains a lot of test cases to cover both api test and repository test.

    ./gradlew test

# Use git pre-commit hook

Follow the instruction from [google-java-format-git-pre-commit-hook](https://github.com/a1exsh/google-java-format-git-pre-commit-hook) to use a `pre-commit` hook to make the code format style stable from different contributors.

# Help

Please fork and PR to improve the code.