Can not deserialize instance of java.util.ArrayList out of VALUE_STRING

Question

I have a REST service built with Jersey and deployed in the AppEngine. The REST service implements the verb PUT that consumes an application/json media type. Th

Answer 1

For people that find this question by searching for the error message, you can also see this error if you make a mistake in your @JsonProperty annotations such that you annotate a List-typed property with the name of a single-valued field:

@JsonProperty("someSingleValuedField") // Oops, should have been "someMultiValuedField"
public List getMyField() { // deserialization fails - single value into List
  return myField;
}