MApping JSON to array return null

问题

When I use this line I get :

AudDto[] auditDtos = objectMapper.readValue(responseBodyAsString, AudDto[].class);

I got : com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `` out of START_OBJECT token

So I add this line : objectMapper.enable(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY);

After that I got : com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field “errMsg”

So I used : objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);

Now I have no exceptions or errors, but the value that return is null.

[{"time":0,"type_key":null,"type_description":null},{"time":0,"type_key":null,"type_description":null},{"time":0,"type_key":null,"type_description":null}]

what the problem could be here ? how it can be solved ?

来源：https://stackoverflow.com/questions/65396104/mapping-json-to-array-return-null