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HomeJavajavaTutorialHow Can I Configure Jackson to Use Only Fields for Serialization and Deserialization Globally?

How Can I Configure Jackson to Use Only Fields for Serialization and Deserialization Globally?

Configuring Jackson to Use Fields Only: A Global Approach

Jackson's default behavior involves using both properties (getters/setters) and fields for serialization and deserialization. However, you may desire to use fields exclusively as the source of serialization configuration.

Individual Class Annotation

You can apply the following annotation to each individual class to achieve this:

@JsonAutoDetect(fieldVisibility = Visibility.ANY, getterVisibility = Visibility.NONE, setterVisibility = Visibility.NONE)

However, this method requires repetitive annotation on every class, which can be cumbersome.

Global Configuration

To configure this behavior globally, modify individual ObjectMappers as follows:

ObjectMapper mapper = new ObjectMapper();
mapper.setVisibility(mapper.getSerializationConfig().getDefaultVisibilityChecker()
                .withFieldVisibility(JsonAutoDetect.Visibility.ANY)
                .withGetterVisibility(JsonAutoDetect.Visibility.NONE)
                .withSetterVisibility(JsonAutoDetect.Visibility.NONE)
                .withCreatorVisibility(JsonAutoDetect.Visibility.NONE));

Global Access through Wrapper Class

For global access to the configured mapper, consider implementing a wrapper class:

Wrap the mapper in a class/function to expose it globally as needed:

public class JsonMapperWrapper {
    private static final ObjectMapper mapper = <configure objectmapper as above>;

    public static ObjectMapper getMapper() {
        return mapper;
    }
}</configure>

With this approach, you can access the configured mapper through JsonMapperWrapper.getMapper().

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