Pfthb

I using spring Spring boot 2.1.0.

public Mono<ServerResponse> getConvertXmlToJson(ServerRequest serverRequest) 
 Mono<String> requestString = serverRequest.bodyToMono(String.class);
 Mono<String> response = this.convertFormatService.convertXmlToJson(requestString);
 return response.subscribeOn(elastic()).flatMap(rta -> ok()
 .contentType(APPLICATION_JSON_UTF8)
 .body(fromObject(rta)))
 .switchIfEmpty(ServerResponse.badRequest().build());
 

call this method in other bean

private Mono<String> converter(String function, Mono<String> stringToConverter, String setting) 
 log.info("salida, ", stringToConverter.block());
 try 
 Object result = invocable.invokeFunction(function, stringToConverter, setting);
 log.info("", result);
 return Mono.just((String) result);
 catch (Exception e) 
 throw new ConverterException(e.getMessage());
 

I need to pass a string value no a Mono, when I pass Mono the answer is empty.

When I try to get a string value from Mono I get this error:

_tMono.flatMap ⇢ org.springframework.web.filter.reactive.HiddenHttpMethodFilter.filter(HiddenHttpMethodFilter.java:90)nt

if someone has a solution, I'll appreciate it

Maybe, change the converter method (and convertXmlToJson) to take a String instead of Mono<String>

Then you can do something like this:

Mono<String> response = requestString.flatMap(s -> this.convertFormatService.convertXmlToJson(s));

I think there may be some more cleanup in there that can be done, but hopefully this get you closer.