I built a Spring Boot + Angular + JWT Full Stack Starter Kit — here's what I learned

Why I built this

Every time I started a new Java full stack project I was

spending 2-3 days just on setup — JWT configuration,

Spring Security, CORS, connecting Angular to backend.

So I decided to build a reusable starter kit once and

never do that setup again.

What I built

A complete full stack starter kit with:

• Spring Boot 3.5 REST API


• Angular 19 frontend connected to backend


• MySQL database with User table ready


• JWT Authentication working out of the box


• Spring Security configured


• Full CRUD operations


• Clean layered architecture (Controller → Service → Repository)

The Tech Stack

Backend: Java 17, Spring Boot, Spring Security, JWT, JPA

Frontend: Angular 19, TypeScript

Database: MySQL

How it works

1. User registers via POST /api/users


2. User logs in via POST /api/auth/login


3. Backend returns JWT token


4. Frontend stores token in localStorage


5. All protected routes require valid token


6. Invalid or missing token returns 401 Unauthorized

What I learned

• JWT configuration in Spring Security is confusing at first


• CORS needs to be configured in SecurityConfig not just main class


• Angular HttpClient needs provideHttpClient() in app.config.ts


• Service layer keeps code clean and testable

GitHub

Full source code is available here:

https://github.com/shindebuilds/springboot-angular-starter-kit

Feel free to clone it, use it, improve it.

If you want the packaged version with setup instructions:

https://hanumant4.gumroad.com/l/caopgu

Happy building!