[JAVA] Ignore parameters that do not exist in the model with ObjectMapper # readValue

A memo that I was addicted to when receiving a response in json format from an external API and converting it to a model class.

What are you addicted to?

I am converting json to a model with com.fasterxml.jackson.databind.ObjectMapper # readValue (String, TypeReference), but an exception occurs if there is an item in json that does not exist in the model field.

com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException

Solution

Add @JsonIgnoreProperties (ignoreUnknown = true) to the model class.

@NoArgsConstructor
@JsonNaming(SnakeCaseStrategy.class)
@JsonAutoDetect(getterVisibility = Visibility.NONE)
@Data
@JsonIgnoreProperties(ignoreUnknown = true)
public class hogehoge {
｝

Like this.

Chan-chan.