Spring Boot Course Overview

Introduction

• Welcome to the Spring Boot course.
• Focus on building RESTful APIs and web applications with Spring Boot.
• Overview includes creating API, connecting to a real database using Docker, with Postgres and JPA.

Platform Introduction

• Introduction to Migos Code 2.0 platform with new features like dashboard, courses, tools, and content.
• Offers exercises and certificates.
• Encouragement to enroll for full benefits.

Tools and Setup

• IntelliJ: Recommended IDE for Java and JVM-based projects.
  • Offers a 3-month free IntelliJ subscription.
• Toolbox: Tool for managing JetBrains IDE licenses.

Project Setup

• Steps to create a new Spring Boot project using IntelliJ:
  • Choose project location and settings (language, build tool, etc.).
  • Select dependencies (e.g., Spring Boot, Maven).
  • Setting up Git repository for code versioning.
• Ensuring JDK installation and configuration.

Creating a Spring Boot API

• Steps to create a simple REST API:
  • Define main application class with @SpringBootApplication.
  • Create REST endpoint using @RestController and @GetMapping.
• Running the application and testing with REST clients.

Building a CRUD API

• Outline for creating CRUD operations: GET, POST, PUT, DELETE.
• Introduction to Docker and Postgres for database integration.

Docker and Postgres Setup

• Introduction to Docker:
  • Benefits: Portability, resource efficiency, and rapid deployment.
  • Key concepts: Containers, images, Dockerfile, Docker Compose, registries.
• Steps to install Docker and verify installation.
• Using Docker Hub to find Postgres image.
• Creating a Docker Compose file to set up Postgres.
• Running and managing Docker containers.

Connecting Spring Boot to Database

• Adding necessary dependencies for SQL and JPA.
• Configuring application properties for database connection (URL, username, password).
• Creating and managing database using Postgres and Docker.

Spring Data JPA Integration

• Entity Creation:
  • Annotating Java classes with @Entity and @Id to map to database tables.
• Repositories:
  • Using JpaRepository to define repository interfaces.
  • Handling CRUD operations with pre-defined methods.

Implementing API Methods

• Service Layer: Encapsulates business logic and interacts with repository layer.
• Controller Layer:
  • Defining endpoints and handling HTTP requests.
  • Using annotations like @PostMapping, @RequestBody, and @PathVariable.

Practical Examples and Testing

• Testing APIs with HTTP requests using IntelliJ’s built-in REST client.
• Demonstrating CRUD operations (Create, Read, Update, Delete) with examples.

Conclusion and Further Learning

• Encouragement to continue with exercises and further learning through platform enrollment.
• Mention of comprehensive Java and Spring Boot developer roadmap offered by the platform.