📝 Blog Platform API – Spring Boot + JWT + PostgreSQL

A full-stack Blog Platform backend built using Java, Spring Boot, Spring Security, and PostgreSQL.

This project demonstrates real-world backend architecture including authentication, authorization, entity relationships, REST API design, and JWT-based security.

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🚀 Tech Stack

• Java 17+
• Spring Boot
• Spring Security
• JWT Authentication
• PostgreSQL
• Spring Data JPA (Hibernate)
• MapStruct
• Maven
• REST APIs

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📌 Features

🔐 Authentication & Security

• User registration & login
• JWT-based authentication
• Role-based authorization
• Secure endpoints

🗂 Blog Management

• Create, update, delete posts
• Draft & published posts
• Category management
• Tag management
• User-Post relationship
• Category-Post relationship
• Tag-Post relationship

⚙️ Backend Architecture

• Clean layered architecture
• Controller → Service → Repository pattern
• DTO mapping using MapStruct
• Global exception handling
• Proper REST standards

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🏗 Project Architecture

src

• └── main
• └── java
• └── com.blog
• ├── config
• ├── controller
• ├── service
• ├── repository
• ├── entity
• ├── dto
• ├── mapper
• └── exception

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🗄 Database Setup (PostgreSQL)

1️⃣ Run PostgreSQL

Make sure PostgreSQL is running locally.

Create database:

CREATE DATABASE blog_db;

- spring.datasource.url=jdbc:postgresql://localhost:5432/blog_db
- spring.datasource.username=your_username
- spring.datasource.password=your_password

- spring.jpa.hibernate.ddl-auto=update
- spring.jpa.show-sql=true
- spring.jpa.properties.hibernate.format_sql=true


# ▶️ Running the Application

### Clone the repository

```bash
git clone https://github.com/your-username/blog-platform.git
cd blog-platform

| Method | Endpoint               | Description       |
| ------ | ---------------------- | ----------------- |
| POST   | /api/auth/register     | Register new user |
| POST   | /api/auth/authenticate | Login user        |

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📚 What I Learned

• Designing RESTful APIs

• Implementing JWT authentication

• Role-based authorization

• Entity relationships in JPA

• Exception handling best practices

• Clean backend architecture

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📌 Future Improvements

• Pagination & Sorting

• Comment system

• Image upload

• Refresh token mechanism

• Docker support

• Deployment to cloud (AWS / Render)

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👨‍💻 Author

Anant Tiwary

Backend Developer | Spring Boot Enthusiast Bhubaneswar, India