Spring Boot Crash Course Project

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Contents

1. Introduction

• Overview of Spring Boot and its advantages.
• Auto-configuration and embedded Tomcat server.

2. Project Setup

• Creating a Spring Boot project with Spring Initializr.
• Understanding project structure (pom.xml, source folders, resources).

3. REST API Development

• Building controllers with @RestController.
• Defining endpoints using @GetMapping, @PostMapping, etc.
• Returning JSON responses.

4. Dependency Injection

• Managing beans with Spring’s IoC container.
• Using @Component, @Service, and @Autowired.
• Constructor-based injection.

5. Configuration Management

• External configuration with application.properties and YAML.
• Profiles for different environments.

6. Validation & Error Handling

• Adding validation with @Valid and annotations like @NotNull and @Size.
• Handling exceptions with @ExceptionHandler.

7. Lombok

• Using Lombok annotations (@Getter, @Setter, @NoArgsConstructor, @AllArgsConstructor) to reduce boilerplate code.

8. Running the Application

• Running with Maven and embedded Tomcat.
• Testing endpoints via browser or Postman.

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This project is meant for:

• Practicing core Spring Boot concepts.
• Having a quick-start reference for REST API development.
• Serving as a foundation for more advanced Spring projects.

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