Unit V: Spring Boot and REST APIs

Lectures 33-40 - Spring Boot setup, REST design, CRUD APIs, and final integration

Block Overview

This block covers the final major course segment: Spring Boot application setup, REST controller design, request mapping, CRUD APIs, project structure, and final integration practice.

Course Outcome: CO-5 (K5-K6 - Synthesis & Evaluation)
Lectures Covered: 33-40
Final Project Due: Apr 19
End-Semester Exam: Apr 21-May 3

Quick Practice Quizzes (Lectures 33-40)

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Lecture Materials

This week uses upcoming lecture decks. Use the Lectures Index for all available slides.

Lecture 33: Spring Boot Configuration & Setup

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Topics Covered

Spring Boot project structure
@SpringBootApplication
Embedded server model
Configuration via application.properties
Maven and Gradle based setup

Lecture 34: Spring Boot Annotations & Build Systems

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Common Annotations

@SpringBootApplication
@Configuration
@ComponentScan
@EnableAutoConfiguration
@RestController
@RequestMapping

Build Tool Focus

Maven coordinates dependencies through pom.xml
Gradle uses declarative build scripts
Starters simplify dependency selection

Lecture 35: Spring Boot Actuator, Runners & Logging

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Operations Topics

Application runners
Logging levels and structured logs
Actuator endpoints such as /health and /metrics
Why observability matters in production apps

Lecture 36: REST Controllers & Request Mapping

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Request Mapping Topics

@RestController
@GetMapping, @PostMapping, @PutMapping, @DeleteMapping
URL path design
Mapping JSON request and response bodies

Lecture 37: Request Body, Path Variable & Request Parameter

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Parameter Handling Topics

@RequestBody for JSON payloads
@PathVariable for resource identifiers
@RequestParam for query-string data
Validation of incoming data

Lecture 38: HTTP Methods & CRUD APIs (GET, POST, PUT, DELETE)

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CRUD API Topics

Mapping create, read, update, delete to HTTP verbs
Status codes for success and failure cases
Designing consistent endpoints for collections and single resources

Lecture 39: Spring Boot Code Structure & Best Practices

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Best Practice Topics

Layered package structure
Separation of controller, service, and repository code
DTO usage and validation
Naming, logging, and maintainability guidelines

Lecture 40: Final Revision & Hands-on Integration (Spring Boot + REST)

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Final Integration Focus

Connect REST endpoints to service and repository layers
Review common controller patterns and error handling
Prepare for project assembly and viva-style explanation

Key Takeaways

Spring Boot reduces setup friction for Java web apps
REST APIs rely on clear routing, data mapping, and HTTP semantics
Clean project structure improves maintenance and team collaboration
The final lectures consolidate Unit V into project-ready practice