How to enforce ACCEPT_SINGLE_VALUE_AS_ARRAY in jackson’s deserialization process using annotation

You can use @JsonFormat annotation,

public class MyClass {

    @JsonFormat(with = JsonFormat.Feature.ACCEPT_SINGLE_VALUE_AS_ARRAY)
    private List<String> value;


To work with this you need to have Jackson version min 2.7.0. You can also use other available JsonFormat Features

For version 2.6.x

@Autowired private ObjectMapper mapper;

mapper.configure(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY, true);
  • Add this code to your Initializer Class.
  • Or you can directly configure Jackson in your Bean Configuration

These would solve the issue but it will be activated for every deserialization process.

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