36ed4df59d
The check for an empty request body InputStream is now in the base class AbstractMessageConverterMethodArgumentResolver shared for all arguments that involve reading with an HttpMessageConverter -- @RequestBody, @RequestPart, and HttpEntity. When an empty body is detected any configured RequestBodyAdvice is given a chance to select a default value or leave it as null. Issue: SPR-12778, SPR-12860, SPR-12861