🔗 Spring Boot REST API Examples

📌 Overview

This repository contains multiple Spring Boot REST API projects developed to demonstrate core RESTful web service concepts.

The projects focus on handling HTTP requests, producing and consuming JSON/XML data, request parameter handling, path variables, and inter-application communication using REST APIs.

All APIs are backend-only and tested using tools such as Postman.

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🛠 Tech Stack

• Java
• Spring Boot
• Spring Web (REST)
• Jackson (JSON processing)
• XML binding
• Swagger (API documentation)
• Maven

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📂 Projects Included

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1️⃣ Basic REST API

Project: BootRestProj01-FirstRestAPI

• Simple REST endpoint creation
• Basic request–response handling

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2️⃣ REST APIs with Multiple Endpoints

Project: BootRestProj02-RestAPI-DifferentEndPoints

• Multiple API endpoints
• HTTP method handling

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3️⃣ Sending JSON Response

Project: BootRestProj03-RestAPI-SendingJSONResponse

• JSON response generation
• Object to JSON conversion

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4️⃣ Sending XML Response

Project: BootRestProj04-RestAPI-SendingXMLResponse

• XML response handling
• XML message formatting

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5️⃣ Consuming JSON Data

Project: BootRestProj05-RestAPI-GettingJSONContent

• JSON request body handling
• Request payload processing

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6️⃣ Consuming XML Data

Project: BootRestProj06-RestAPI-GettingXMLContent

• XML request handling
• XML payload consumption

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7️⃣ Request Parameters

Project: BootRestProj07-RestAPI-RequestParameters

• Handling query parameters
• Dynamic request values

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8️⃣ Path Variables

Project: BootRestProj08-RestAPI-PathVariables

• RESTful path variable mapping
• Dynamic URL handling

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9️⃣ REST Consumer & Provider Applications

Projects:

• BootRestProj09-App-Consumer
• BootRestProj09-App-Provider
• BootRestProj10-App-Consumer
• BootRestProj10-App-Provider
• BootRestProj11-App-Consumer-exchange
• BootRestProj11-App-Provider-exchange
• BootRestProj12-App-Consumer
• BootRestProj12-App-Provider

Features:

• REST API consumption using RestTemplate / exchange()
• Inter-application communication
• HTTP response handling

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🔟 Mini Projects

• Mini-Project
• Mini-Project-App-Consumer
• Mini-Project-App-Consumer-exchange

Focused on:

• End-to-end REST communication
• Consumer–provider interaction

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📘 Swagger API Documentation

Project: SwaggerAPI

• API documentation using Swagger
• Endpoint visualization
• Request & response testing support

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🏗 Architecture

All projects follow REST-based layered architecture:

Controller → Service → Repository (where applicable)

Principles followed:

• Stateless communication
• Resource-based URL design
• Proper HTTP method usage

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🎯 Key Learning Outcomes

• Built RESTful APIs using Spring Boot
• Handled JSON and XML payloads
• Implemented request parameters and path variables
• Developed consumer–provider REST applications
• Tested APIs using Postman
• Documented APIs using Swagger

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🚀 Future Enhancements

• Add Spring Security & JWT authentication
• Introduce pagination & filtering
• Standardize error handling
• Add versioned APIs
• Integrate with frontend clients

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👨‍💻 Author

Ganta Lakshman Naga Durga Sairam
Java Full Stack Developer
Hyderabad, India