Jackson ObjectMapper - specify serialization order of object properties

Question

I\'m implementing a RESTful web service where user has to send a signed verification token along with the request so that I could ensure that the request has not been tamper

Answer 1

You can use mix-in and specify the order of properties as you like:

import com.fasterxml.jackson.annotation.JsonPropertyOrder;
import com.fasterxml.jackson.databind.ObjectMapper;

import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;

@Component
public final class ObjectMapperUtils {

    private static final ObjectMapper MAPPER = new ObjectMapper();

    static {
        MAPPER.addMixIn(Object.class, IdFirst.class);
    }

    @Bean
    public ObjectMapper objectMapper() {
        return MAPPER;
    }

    @JsonPropertyOrder({"id", "...", "..."})
    private abstract static class IdFirst {}

}