java.time.format.DateTimeParseException handling in OpenFeign - spring-boot

Question

I have multiple services, so I am using OpenFeign client like this:
#FeignClient(name = "identity-service")
public interface IdentityServiceClient {
#RequestMapping(method = RequestMethod.GET, value = "/validate", produces = MediaType.APPLICATION_JSON_VALUE)
boolean validateId(#RequestParam String id);
}
I use a Feign Decoder:
#Component
public class FeignErrorDecoder implements ErrorDecoder {
Environment environment;
#Autowired
Jackson2ObjectMapperBuilder mapperBuilder;
#Override
public Exception decode(String methodKey, Response response) {
ExceptionMessage message = new ExceptionMessage();
try (InputStream bodyIs = response.body().asInputStream()) {
ObjectMapper mapper = mapperBuilder.build();
mapper.registerModule(new JavaTimeModule());
mapper.disable(SerializationFeature.WRITE_DATES_WITH_CONTEXT_TIME_ZONE);
message = mapper.readValue(bodyIs, ExceptionMessage.class);
} catch (IOException e) {
return new Exception(e.getMessage());
}
switch (response.status()) {
case 400:
return new ResponseStatusException(HttpStatus.BAD_REQUEST, message.getMessage() != null ? message.getMessage() : "Bad Request");
case 404:
return new ResponseStatusException(HttpStatus.NOT_FOUND, message.getMessage() != null ? message.getMessage() : "Not found");
default:
return errorDecoder.decode(methodKey, response);
}
}
I am trying to map the error into a custom error message for visibility:
public class ExceptionMessage {
#JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ssZ")
private LocalDateTime timestamp;
private HttpStatus status;
private String error;
private String message;
private String path;
}
However, I get consistent error that I haven't been able to work around:
2022-08-02 17:05:17.206 ERROR 87600 --- [o-auto-1-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.reflect.UndeclaredThrowableException] with root cause
java.lang.Exception: Cannot deserialize value of type `java.time.LocalDateTime` from String "2022-08-02T23:05:09.303+00:00": Failed to deserialize java.time.LocalDateTime: (java.time.format.DateTimeParseException) Text '2022-08-02T23:05:09.303+00:00' could not be parsed at index 19
I have to confess I have never seen that particular datetime format '2022-08-02T23:05:09.303+00:00' before, where does that come from?