Spring Boot Tutorial 0/110 lessons ~6 min read Lesson 6“Production-grade backends”

Project Structure

A standard Spring Boot project follows a Maven layout.

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Focus

3 guided sections

Practice signal

Examples included

Career prep

Foundation builder

Introduction

A standard Spring Boot project follows a Maven layout. Knowing where each file lives — and why — makes you instantly productive in any team's codebase.

Syntax reference

Reference layout:

bash

orders/
├── pom.xml                        # build config + deps
├── src/
│   ├── main/
│   │   ├── java/com/acme/orders/
│   │   │   ├── OrdersApplication.java    # @SpringBootApplication
│   │   │   ├── controller/               # REST controllers
│   │   │   ├── service/                  # business rules
│   │   │   ├── repository/               # Spring Data interfaces
│   │   │   ├── domain/                   # entities / records
│   │   │   ├── dto/                      # request / response shapes
│   │   │   ├── config/                   # @Configuration classes
│   │   │   └── exception/                # @ControllerAdvice
│   │   └── resources/
│   │       ├── application.yml           # config
│   │       ├── db/migration/             # Flyway SQL
│   │       └── static/                   # public assets
│   └── test/java/com/acme/orders/        # mirrors main/
└── target/                               # build output (gitignored)

Best practices

Package by feature for large apps (orders/, billing/) — not by layer.
Keep OrdersApplication at the root package; component scan finds everything below.
Never commit target/ or IDE files; .gitignore from Initializr is correct.

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