Journal App

A secure, end-to-end encrypted journal application built with Spring Boot, MongoDB and features JWT-based authentication.

Features

• JWT-based authentication
• CRUD operations for journal entries
• User management
• MongoDB integration
• RESTful API

Technology Stack

• Backend: Spring Boot 2.7.15
• Database: MongoDB
• Authentication: JWT (JSON Web Tokens)
• Security: Spring Security
• Build Tool: Maven

API Endpoints

Authentication

• POST /authenticate/login - User login
• POST /authenticate/register - User registration

Journal Entries (Authenticated)

• GET /journal - Get all journal entries for current user
• POST /journal - Create new journal entry
• GET /journal/id/{id} - Get specific journal entry
• PUT /journal/id/{id} - Update journal entry
• DELETE /journal/id/{id} - Delete journal entry

User Management (Authenticated)

• GET /user - Get all users (Admin only)
• PUT /user - Update current user
• DELETE /user - Delete current user

Quick Start

Prerequisites

• Java 17
• Maven 3.6+
• MongoDB (or use MongoDB Atlas)

Running Locally

1. Clone the repository:

git clone <repository-url>
cd Journal-App

2. Update MongoDB connection in application.properties:

spring.data.mongodb.uri=your-mongodb-uri
spring.data.mongodb.database=journaldb

3. Build and run:

mvn clean install
mvn spring-boot:run

The application will be available at http://localhost:8080

Usage Examples

Register a new user:

curl -X POST http://localhost:8080/authenticate/register \
  -H "Content-Type: application/json" \
  -d '{"username":"testuser","password":"password123"}'

Login:

curl -X POST http://localhost:8080/authenticate/login \
  -H "Content-Type: application/json" \
  -d '{"username":"testuser","password":"password123"}'

Create journal entry (with JWT token):

curl -X POST http://localhost:8080/journal \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_JWT_TOKEN" \
  -d '{"title":"My Day","content":"Today was a great day!"}'

Environment Variables

• SPRING_DATA_MONGODB_URI - MongoDB connection string
• SPRING_DATA_MONGODB_DATABASE - Database name
• JWT_SECRET - JWT secret key (optional, uses default if not set)
• JWT_EXPIRATION - JWT token expiration time in milliseconds

Security Features

• Password encryption using BCrypt
• JWT-based stateless authentication
• CORS support
• Input validation

Contributing

1. Fork the repository
2. Create a feature branch
3. Commit your changes
4. Push to the branch
5. Create a Pull Request

License

This project is licensed under the MIT License.