У меня есть проект со следующим симулированным клиентом
@FeignClient(name = "name", url = "${tokenService}")
public interface TokenService {
@RequestMapping(path = "/SLJsonWebTokenWrapper/token/wrap", method = RequestMethod.POST,
consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
Observable<Token> getToken(@RequestHeader("externalSystemCode") String systemCode,
@RequestBody TokenRequest tokenRequest);
}
и следующая зависимость
org.springframework.cloud:spring-cloud-starter-feign
Все работает нормально.
Когда я обновляю свой проект до Spring Boot 2 (и использую org.springframework.cloud:spring-cloud-starter-openfeign
), запросы к этой службе не выполняются, за исключением
c.f.j.d.e.InvalidDefinitionException: Cannot construct instance of
`rx.Observable` (no Creators, like default construct, exist): cannot
deserialize from Object value (no delegate- or property-based Creator)
at [Source: (ByteArrayInputStream); line: 1, column: 2]
at c.f.j.d.e.InvalidDefinitionException.from(InvalidDefinitionException.java:67)
at c.f.j.d.DeserializationContext.reportBadDefinition(DeserializationContext.java:1452)
at c.f.j.d.DeserializationContext.handleMissingInstantiator(DeserializationContext.java:1028)
at c.f.j.d.d.BeanDeserializerBase.deserializeFromObjectUsingNonDefault(BeanDeserializerBase.java:1297)
at c.f.j.d.d.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:326)
at c.f.j.d.d.BeanDeserializer.deserialize(BeanDeserializer.java:159)
at c.f.j.d.ObjectMapper._readMapAndClose(ObjectMapper.java:4013)
at c.f.j.d.ObjectMapper.readValue(ObjectMapper.java:3084)
... 1 frames excluded
... 99 common frames omitted
Wrapped by: o.s.h.c.HttpMessageConversionException: Type definition
error: [simple type, class rx.Observable]; nested exception is
com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot
construct instance of `rx.Observable` (no Creators, like default
construct, exist): cannot deserialize from Object value (no delegate-
or property-based Creator)
at [Source: (ByteArrayInputStream); line: 1, column: 2]
at o.s.h.c.j.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:240)
at o.s.h.c.j.AbstractJackson2HttpMessageConverter.read(AbstractJackson2HttpMessageConverter.java:225)
... 3 frames excluded
at f.o.OptionalDecoder.decode(OptionalDecoder.java:36)
at f.SynchronousMethodHandler.decode(SynchronousMethodHandler.java:170)
... 93 common frames omitted
Wrapped by: f.c.DecodeException: Type definition error: [simple type, class rx.Observable]; nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `rx.Observable` (no Creators, like default construct, exist): cannot deserialize from Object value (no delegate- or property-based Creator)
at [Source: (ByteArrayInputStream); line: 1, column: 2]
Как я могу это исправить?
P.S. Этот вопрос похож на Spring cloud netflix и HystrixObservable -> JsonMappingException , который не имеет ответа, хотя