Lower log level of ResponseStatusExceptionHandler [SPR-16049]

[spring-projects-issues]

Stéphane Nicoll opened SPR-16049 and commented

Assuming the following code

@GetMapping("/speakers/{id}")
public Mono<Speaker> byId(@PathVariable String id) {
    return this.repository.findById(id)
            .switchIfEmpty(Mono.error(new ResponseStatusException(HttpStatus.NOT_FOUND)));
}

logs at error level when an unknown id is provided:

ERROR 9551 --- [      Thread-15] o.s.w.s.h.ResponseStatusExceptionHandler : Response status 404

ERROR for an expected case sounds too high.

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Affects: 5.0 GA