Spring boot using wrong message convertor - rest

Question

I have a rest endpoint like below which is supposed to accept an XML input, do some processing on it and then return a response in XML as well.
#RequestMapping(value = "/rest/v1/test/listener", method = RequestMethod.POST)
public ResponseEntity<MyResponseType> processBooking(#RequestBody MyRequest myRequest) throws JAXBException {
MyResponseType response = myService.process(myRequest);
// ... do something with it and generate 'response'
return new ResponseEntity<>(response, HttpStatus.OK);
}
And MyRequest class looks like below which is autogenerated via jaxb and an external xsd which I cannot change (details omitted from the class)
/**
* MyRequest
*/
public class MyRequest {
#XmlElement(required = true)
#XmlSchemaType(name = "string")
protected SomeEnum someEnum;
...
#XmlType(name = "SomeEnum")
#XmlEnum
public enum SomeEnum {
ACTIVITY,
DEPOSIT,
EQUIPMENT,
FEE,
MISC,
PROTECTION,
RENTAL,
TAX,
DISCOUNT;
public static SomeEnum fromValue(String v) {
return valueOf(v);
}
public String value() {
return name();
}
}
}
The problem is that when I try to run it, I get the following error message
2018-04-09 11:47:59.378 WARN 2702 --- [ main]
.w.s.m.s.DefaultHandlerExceptionResolver : Failed to read HTTP
message:
org.springframework.http.converter.HttpMessageNotReadableException:
JSON parse error: Can not construct instance of MyRequest.SomeEnum: no
String-argument constructor/factory method to deserialize from String
value ('MISC'); nested exception is
com.fasterxml.jackson.databind.JsonMappingException: Can not construct
instance of MyRequest.SomeEnum: no String-argument constructor/factory
method to deserialize from String value ('MISC')
A sample xml that I send as input is
<myRequest>
...
<advertiserAssignedId>19ABC12331</advertiserAssignedId>
<listingExternalId>ABC123</listingExternalId>
<unitExternalId>ABC123</unitExternalId>
<someEnum>
<name>MISC</name>
<feeType>MISC</feeType>
...
</someEnum>
...
</myRequest>

Answer 1

You have to specify what is your endpoint consuming using the consumes attribut .
When you post the request to your endpoint, don't forget to set the Content-type header to application/xml