How is CORS enabled in Spring Boot?

Spring Boot Framework supports CORS and offers different ways to configure.

• Global CORS configuration: When a global CORS configuration needs to be defined with annotation-based, fine-grained configurations, then the same has to be declared in Spring MVC and combined with @CrossOrigin configuration using filters. The GET, POST and HEAD methods, and all origins are permitted by default in this method of enabling CORS in Spring Boot.
• The Controller method of CORS configuration: The @CrossOrigin annotation can be added to the @RequestMapping handler method to enable CORS in Spring Boot. The @CrossOrigin allows all the HTTP methods and origins specified in @RequestMapping annotation.

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