CODEWITHSUNDEEP
springrestspring-boothttp-headers
Mickey
Mickey

Reputation: 173

RestController Setting default Header for GetMapping

Good Morning,

I have a RestController controller where I have a GetMapping using a header. If that header does not come with any value, I want to route to a default method, ¿is there any way? ¿Is there any way to set the value of a default header when the rest Client dont send it?

@RestController
@RequestMapping("/api/demo")

@Log4j2
public class RestDemoController{

@GetMapping( value = "/version", headers = "x-api-version=v.1.0")
public String getHeaderValue(@RequestHeader(value=ApiVersionConstans.API_VERSION_HEADER_CODE) String version) {
    log.debug("Returning version header");
    return ApiVersionConstans.API_VERSION_HEADER_CODE;
}

@GetMapping(value = "/version", headers = "x-api-version=v.1.0_default")

public String getAnoherHeader(@RequestHeader(value=ApiVersionConstans.API_VERSION_HEADER_CODE) String version) {
    log.debug("Looking for exisiting tokens");
    return "This is another header";
}

}

Regards

Upvotes: 0

Views: 4678

Answers (1)

Tomoki Sato
Tomoki Sato

Reputation: 638

Please try this:

@GetMapping("/version")
public String getDefaultHeader(@RequestHeader(value=ApiVersionConstans.API_VERSION_HEADER_CODE, defaultValue="your default value") String version) {
    // ...
    return "This is default header";
}

When you set @RequestHeader#defaultValue, the header is not required and its value is set to version when the header is missing.
I think javadoc of @RequestHeader is helpful for you: https://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/web/bind/annotation/RequestHeader.html#required--

Upvotes: 2

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