In Spring 3 is it possible to dynamically set the reason of @ResponseStatus?

Question

I have a custom exception class annotated to return a given HttpStatus:

@ResponseStatus(value=HttpStatus.BAD_REQUEST, reason=\"Invalid parameter\")
         


        

Answer 1

If you omit the 'reason' attribute in the @ResponseStatus annotation on a custom exception,

@ResponseStatus(value = HttpStatus.CONFLICT)  // 409
public class ChildDataExists extends RuntimeException {
...

then throw the exception

throw new ChildDataExists("Can't delete parent if child row exists.");

The exception's message comes through as the 'message' of the 'data' in the JSON output. It seems the 'reason' in the annotation overrides the custom behavior.