Spring Boot:防止杰克逊在JSON序列化时“重新格式化”XMLGregorianCalendar

@Configuration
public class JacksonConfig {

    @Bean
    public Jackson2ObjectMapperBuilderCustomizer customJackson() {
        return builder -> {
            builder.serializerByType(XMLGregorianCalendar.class, new XMLGregorianCalendarSerializer());
            builder.deserializerByType(XMLGregorianCalendar.class, new XMLGregorianCalendarDeserializer());
        };
    }
}

public class XMLGregorianCalendarSerializer extends StdSerializer<XMLGregorianCalendar> {

    public XMLGregorianCalendarSerializer() {
        super(XMLGregorianCalendar.class);
    }

    @Override
    public void serialize(XMLGregorianCalendar value, JsonGenerator gen, SerializerProvider provider) throws IOException {
        gen.writeString(value.toXMLFormat());
    }
}

public class XMLGregorianCalendarDeserializer extends StdDeserializer<XMLGregorianCalendar> {

    public XMLGregorianCalendarDeserializer() {
        super(XMLGregorianCalendar.class);
    }

    @Override
    public XMLGregorianCalendar deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
        String value = p.getValueAsString();
        try {
            return DatatypeFactory.newInstance().newXMLGregorianCalendar(value);
        } catch (DatatypeConfigurationException e) {
            throw new IOException("Failed to deserialize XMLGregorianCalendar", e);
        }
    }
}

@SpringBootApplication
@Import(JacksonConfig.class)
public class YourApplication {

    public static void main(String[] args) {
        SpringApplication.run(YourApplication.class, args);
    }
}