One way to send specific HTTP (error) status codes from a JAX-RS resource is to use the javax.ws.rs.core.Response class with its Builder Pattern-like API. If you want to specify the return type according to the response body, you can still do so and send a different status on errors by throwing a WebApplicationException.
@Path("test")
public class TestResource {
@GET
public String hello() {
if (new Random().nextBoolean())
throw new WebApplicationException(Response.Status.CONFLICT);
return "Hello World, " + Instant.now();
}
}The constructors of this special type of exception accepts Responses, Response.Statuses or int types. The JAX-RS runtime will send the corresponding HTTP statuses and header fields, respectively.
There are also pre-defined subtypes of WebApplicationException for common errors like NotFoundException or BadRequestException.
| Published on Java Code Geeks with permission by Sebastian Daschner, partner at our JCG program. See the original article here: Using JAX-RS exceptions for status codes Opinions expressed by Java Code Geeks contributors are their own. |
