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java-17-mysql-docker-compose

TL;DR

Windows - Powershell

docker-compose build | docker-compose up

Linux - Bash

docker-compose build && docker-compose up

This project serves as a boilerplate for building Java 17 applications using the following technologies and tools:

  • Java 17: The latest long-term support version of Java, ensuring modern language features and improvements.
  • Maven: Used for project management and dependency management.
  • Docker Compose: Simplifies local development by allowing you to run the entire application stack (including MySQL) within Docker containers.
  • Dirk: A lightweight dependency injection library for managing object creation and dependencies.
  • SLF4J with Log4j2: Provides robust and flexible logging through the SLF4J API, using Log4j2 as the logging backend.
  • JDBC: Utilized for establishing a connection to relational databases and performing SQL operations.
  • MySQL Database: The database for storing and managing application data.

This setup is ideal for jump-starting a Java project with dependency injection, logging, and database connectivity, all contained in a local development environment via Docker Compose.

Getting started

Installation

Install Docker

Install JDK 17 (optional)

Install Maven (optional)

Tip: you can run Maven commands without having Maven installed.

./mvnw foo

Clone the repository

git clone https://github.com/elidaniel92/java-17-mysql-docker-compose.git

Switch to the repo folder

cd java-17-mysql-docker-compose

Install dependencies (optional)

mvn clean install

Running the App with Docker Compose

Build the App and MySQL Container Image

docker-compose build

Started the container

docker-compose up

Running the Java Application locally and MySQL Server in the container

Build the MySQL Container Image

Since you cannot load an environment file using the build command command, go to the MySQL Dockerfile and uncomment the environment variables section.

docker build -t db-img -f docker/Dockerfile.mysql .

Start the MySQL Server Container

docker run --name db-container -ip 3306:3306 db-img

After the message below, the server is ready for connections. You can close the terminal:

2024-09-07T22:48:15.362678Z 0 [System] [MY-010931] [Server] /usr/sbin/mysqld: ready for connections. Version: '8.4.2'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  MySQL Community Server - GPL.

Setting the Java Application Environment Variable

Load the local environment variables file (env/local.env) in your terminal session.

Windows - To load the env/local.env file in a PowerShell terminal session, use the command below:

Get-Content env/local.env | ForEach-Object { if ($_ -match '^(.*?)=(.*)$') { [System.Environment]::SetEnvironmentVariable($matches[1], $matches[2]) } }

Linux - To load the env/local.env file in a Bash terminal session, use the command below:

export $(grep -v '^#' env/local.env | xargs)

Running the app

With .jar

Generete .jar

mvn clean package

Run .jar

java -jar target/java-17-mysql-docker-compose-1.0-SNAPSHOT.jar

With Maven

mvn clean compile exec:java

Delete All Images and Containers

docker rm -f db-container  
docker rmi db-img
docker rm -f store-system-app-1
docker rm -f store-system-db-1
docker rmi -f store-system-app
docker rmi -f store-system-db

License

This project is licensed under the MIT License - see the LICENSE file for details.