📚 QuizApp Backend

A simple Spring Boot-based backend application for managing quizzes and questions. This project was built to understand the basics of Spring Boot, REST APIs, and JPA.

🚀 Features

• Add and retrieve quiz questions
• Filter questions by category
• Create quizzes with random questions
• Retrieve quiz questions by quiz ID
• Submit quiz responses and calculate score

🛠️ Technologies Used

• Java 17+
• Spring Boot
• Spring Data JPA
• MySQL Database
• Lombok

📦 API Endpoints

🔹 Question APIs (/question)

• GET /allQuestions – Get all questions
• GET /category/{category} – Get questions by category
• POST /add – Add a new question

🔹 Quiz APIs (/quiz)

• POST /create?category={category}&numQ={num}&title={title} – Create a quiz
• GET /get/{id} – Get quiz questions by quiz ID
• POST /submit/{id} – Submit quiz responses and get score

🧪 Models

• Question: Stores question details including options and correct answer
• Quiz: Stores quiz metadata and associated questions
• QuestionWrapper: Used to send questions without revealing correct answers
• Response: Used to submit answers for evaluation

⚙️ How to Run

1. Clone the repository

   git clone https://github.com/your-username/quizapp-backend.git
   cd quizapp-backend

2. Configure MySQL Database
   Make sure MySQL is running and create a database named quizapp.
   Update application.properties with your credentials:

spring.datasource.url=jdbc:mysql://localhost:3306/quizapp
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver

spring.jpa.hibernate.ddl-auto=update
spring.jpa.show-sql=true
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL8Dialect

3. Build the project

   npm clean install

4. Run the application

   mvn spring-boot:run

👤 Author

Hrishikesh
Full-stack developer passionate about building secure, scalable, and well-documented web applications.
Specialized in Spring Boot, React, and modern authentication flows.
Connect with me on LinkedIn