blogspot-snippets-2

api-versioning-of-rest-services-1.java

@RestController 
@RequestMapping("/v1")
ProfileV1Controller {
	@RequestMapping("/profile") 
	ProfileV1 getProfile(){
		return new ProfileV1();
	}
}

@Controller 
@RequestMapping("/v2")
ProfileV2Controller {
	@RequestMapping("/profile") 
	ProfileV2 getProfile(){
		return new ProfileV2();
	}
}

api-versioning-of-rest-services-2.java

@RestController 
ProfileController {
	@RequestMapping("/profile") 
	@VersionRange(Version.V1)
	ProfileV1 getProfileV1(){
		return new ProfileV1();
	}
	
	@RequestMapping("/profile") 
	@VersionRange(Version.V2)
	ProfileV2 getProfileV2(){
		return new ProfileV2();
	}
}

api-versioning-of-rest-services-3.java

@RestController 
ProfileController {
	@RequestMapping("/profile") 
	@VersionRange(@Version.V1) @JsonView(Views.V1)
	Profile getProfileV1(){
		return getProfileV2();
	}
	@RequestMapping("/profile") 
	@VersionRange(@Version.V2) @JsonView(Views.V2)
	Profile getProfileV2(){
		return new Profile();
	}
}

api-versioning-of-rest-services-4.java

@ControllerAdvice
public class VersionRangeResponseBodyAdvice extends AbstractMappingJacksonResponseBodyAdvice {

	@Override
	public boolean supports(MethodParameter returnType, Class<? extends HttpMessageConverter<?>> converterType) {
		return (AbstractJackson2HttpMessageConverter.class.isAssignableFrom(converterType) && returnType.getMethodAnnotation(VersionRange.class) != null);
	}

	@Override
	protected void beforeBodyWriteInternal(MappingJacksonValue bodyContainer, MediaType contentType,
			MethodParameter returnType, ServerHttpRequest request, ServerHttpResponse response) {
		Version selectedVersion = //retrieve requested version from request object;
		bodyContainer.setSerializationView(selectedVersion.getDefaultView());
	}
}

api-versioning-of-rest-services-5.java

@RestController 
ProfileController {
	@RequestMapping("/profile") 
	@VersionRange({@Version.V1, @Version.V2})
	Profile getProfile(){
		return new Profile();
	}
}