ObjectMapperTest20180509.java

/**
 * ObjectMapper 단위테스트
 */
@Slf4j
public class ObjectMapperTest {

    private ObjectMapper objectMapper;

    @Before
    public void setUp() throws Exception {
        objectMapper = new ObjectMapper();
        objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
    }

    @Test
    public void testSourceObject() throws JsonProcessingException {
        Message source = Message.builder().subject("Test subject").body("Test body").build();
        log.debug("Result: {}", objectMapper.convertValue(source, Map.class));
        log.debug("Result: {}", objectMapper.writeValueAsString(source));

    }

    @Getter
    @Builder
    public static class Message {
        /**
         * static 필드인 경우 ObjectMapper 가 변환에서 제외하는군!
         */
        private final static String DEFAULT_FIELD = "test";

        private String subject;
        private String body;
        private String description = DEFAULT_FIELD;
        @JsonIgnore
        private String ignoredField = "ignored";
    }
    
    //11:16:11.375 [main] DEBUG ObjectMapperTest - Result: {subject=Test subject, body=Test body}
    //11:16:11.382 [main] DEBUG ObjectMapperTest - Result: {"subject":"Test subject","body":"Test body"}
}