How to manage REST API versioning with spring?

java

api-versioning

spring-annotations

request-mapping

byAnton Shumikhin·Feb 19, 2025

Harness the power of URI Versioning with Spring for REST API version management. Just include the version number within the request path. Check this out:

@RestController
@RequestMapping("/api/v1/items") //Classic Coke
public class ItemsV1Controller { /*...*/ }

@RestController
@RequestMapping("/api/v2/items") //New Coke, with a twist
public class ItemsV2Controller { /*...*/ }

You instantly set a clear version distinction—V1 goes with /api/v1/items, V2 with /api/v2/items, creating a transparent and maintainable API lifecycle.

Exploring deeper into versioning

URI versioning scratched the surface. Time to dive deep into the sea of advanced strategies and best practices for managing your API's evolution.

Using Headers for Versioning

Spring props up header value evaluation in versioning. Use custom request mappings for this. It's like sneaking in a secret message:

@GetMapping(value = "/items", headers = "X-API-Version=1")
public ResponseEntity<String> getItemsV1() { /*...*/ }

@GetMapping(value = "/items", headers = "X-API-Version=2")
public ResponseEntity<String> getItemsV2() { /*...*/ }

Developing Custom Annotations and Handler Mappings

Craft your VersionRange annotation to define version bounds—it's like setting rules of engagement. Create a VersionRangeRequestMappingHandlerMapping to get on with annotation-based routing. Put your mapping on the priority list—pushes the Spring mappings to fetch your morning paper.

@Target({ElementType.METHOD, ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
public @interface ApiVersion {
    int[] value();
}

Use this annotation cape to swoop into class or method level territories, flavor SQL mappings or header info with versioning—it's almost like having cheat codes!

Embracing Backwards compatibility

Remember, API's versioning mantra—make backwards compatible changes whenever you can. Toss new fields that don't mess with existing clients—it's like fresh toppings without changing the pizza base.

Configuring API to your accord

Treat Spring with your customized VersionRangeRequestMappingHandlerMapping as a priority over the default RequestMappingHandlerMapping. It's like the VIP pass for your versioning logic. Embrace regex patterns in @RequestMapping for finer-grained controls. It's like having custom combo moves in a game. Don't forget to heed any corporate guidelines that may steer your versioning ship.

Master strategies of versioning

Customizing routing rules

To finesse your routing, override the getMappingForMethod function, supercharging your handler mapping with versioning logic. It's like adding nitro boost to your Spring's default request matching journey.

Sprint through versions

Give clients an easy ride by introducing version aliases. Redirect 'latest' to your current version. It's like offering a free cab ride to the newest attraction in town.

Unleashing Spring's prowess

Leverage Spring's smart method selection logic to align requests with the correct API version. Use custom request conditions and method-level annotations. It's like programming your GPS for a smooth drive!

Stay in loop

Keep the official Spring documentation next to your snack bar. Up-to-date strategies on request matching and method selection processes are best served fresh.