1. 定义对象映射器
public class JacksonObjectMapper extends ObjectMapper {
public static final String DEFAULT_DATE_FORMAT = "yyyy-MM-dd";
public static final String DEFAULT_DATE_TIME_FORMAT = "yyyy-MM-dd HH:mm:ss";
public static final String DEFAULT_TIME_FORMAT = "HH:mm:ss";
public JacksonObjectMapper() {
super();
this.configure(FAIL_ON_UNKNowN_PROPERTIES, false);
this.getDeserializationConfig().withoutFeatures(DeserializationFeature.FAIL_ON_UNKNowN_PROPERTIES);
SimpleModule simpleModule = new SimpleModule()
.addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_TIME_FORMAT)))
.addDeserializer(LocalDate.class, new LocalDateDeserializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_FORMAT)))
.addDeserializer(LocalTime.class, new LocalTimeDeserializer(DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT)))
.addSerializer(BigInteger.class, ToStringSerializer.instance)
.addSerializer(Long.class, ToStringSerializer.instance)
.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_TIME_FORMAT)))
.addSerializer(LocalDate.class, new LocalDateSerializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_FORMAT)))
.addSerializer(LocalTime.class, new LocalTimeSerializer(DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT)));
this.registerModule(simpleModule);
}
}
2. 扩展mvc中的消息转换器
@Slf4j
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {
@Override
protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
log.info("扩展自己的消息转换器");
MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
messageConverter.setobjectMapper(new JacksonObjectMapper());
converters.add(0, messageConverter);
}
}
当然,如果转换类型少的话也可以一步到位:
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {
protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
MappingJackson2HttpMessageConverter jackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();
ObjectMapper objectMapper = new ObjectMapper();
SimpleModule simpleModule = new SimpleModule();
simpleModule.addSerializer(Long.class, ToStringSerializer.instance);
simpleModule.addSerializer(Long.TYPE, ToStringSerializer.instance);
objectMapper.registerModule(simpleModule);
jackson2HttpMessageConverter.setobjectMapper(objectMapper);
converters.add(0, jackson2HttpMessageConverter);
}
}