How to Fix CORS Error Policy in SpringBoot and React : Fsiblog
How to Fix CORS Error Policy in SpringBoot and React : Fsiblog
When developing web applications, you’ll often run into CORS (Cross-Origin Resource Sharing) errors when your frontend (React JS) and backend (Spring Boot) are running on different origins (i.e., different ports or domains). This happens because modern browsers block requests made across different domains for security reasons unless the server allows it. In this article, we will address a common CORS error you might face while working with React JS and Spring Boot.
What You'll Learn:
What is a CORS error and why it happens
How to enable CORS globally in Spring Boot using @CrossOrigin and WebMvcConfigurer
Configuring headers, methods, and credentials
Setting up proxy in React to avoid CORS during development
Best practices for production environments
Whether you're building a personal project or enterprise-level app, this guide will help you fix and understand CORS policy issues once and for all.
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