What is API Versioning support in Spring Framework 7?

Spring Framework 7 adds native, declarative API versioning through a new version attribute on @RequestMapping and its shortcuts like @GetMapping, removing the need for the URL-prefix or custom-header hacks teams used before.

@RestController
@RequestMapping("/products")
public class ProductController {
    @GetMapping(version = "1")
    public List<Product> listV1() { /* ... */ }

    @GetMapping(version = "2")
    public List<Product> listV2() { /* ... */ }
}

Spring supports resolving the requested version from a header, a path segment, a query parameter, or media type, and the same version attribute works on @HttpExchange clients, RestClient, WebClient, and testing utilities like RestTestClient, so client and server stay consistent end to end.

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