Secure Admin Login with React + Spring Boot 🔐 | Fix CORS & Basic Auth! The trial and error method!
In this video, Deividas Strole walks you through building a secure admin login system using React for the frontend and Spring Boot for the backend. Learn how to properly protect backend endpoints while allowing public access to regular content.
🎯 What You'll Learn:
Researching solutions for unusual problems and implementing fixes
Setting up Basic Authentication with Spring Security
Creating a protected /admin endpoint in your Spring Boot controller
Authenticating from the React frontend using fetch
Fixing the dreaded CORS error: “No 'Access-Control-Allow-Origin' header…”
Allowing selective route protection (/admin/** secure, /api/articles/** public)
Using proper Spring Security CORS configuration without deprecated methods
💡 Perfect For:
Developers building blogs, CMS platforms, or admin dashboards
React developers integrating with Spring Boot backend
Anyone learning best practices for securing web applications
Backend developers configuring CORS and authentication in Spring Security
🛠️ Tools Used:
React with React Router
Spring Boot 3.x
Spring Security 6
In-Memory UserDetails for authentication
CORS configuration in Java
curl and Postman for testing endpoints
💡 Pro Tip:
If your React login works in curl but not in the browser, it’s probably a CORS issue — Deividas Strole shows exactly how to fix it.
🎥 Created by Deividas Strole
🔗 Connect & Learn More with Deividas Strole:
Website: https://deividasstrole.com
LinkedIn: / deividas-strole
GitHub: https://github.com/deividas-strole
Dev.to: https://dev.to/deividas-strole
Medium: / deividas-strole
X (Twitter): https://x.com/deividasstrole
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