解决LocalDateTime返回前端数据为数组结构的问题

问题现象

解决办法如下

1、使用@JsonFormat

@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8")

结果

2、使用SpringMVC提供的ExtendMessageConverters

@Slf4j
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {/*** 扩展消息转换器*/@Overrideprotected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {log.info("扩展消息转换器~~~");// 创建一个消息转换器MappingJackson2HttpMessageConverter httpMessageConverter = new MappingJackson2HttpMessageConverter(new JacksonObjectMapper());// 存入SpringMVC容器converters.add(0, httpMessageConverter);}
}

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_DATE_TIME_FORMAT = "yyyy-MM-dd HH:mm";public static final String DEFAULT_TIME_FORMAT = "HH:mm:ss";public JacksonObjectMapper() {super();// 收到未知属性时不报异常this.configure(FAIL_ON_UNKNOWN_PROPERTIES, false);// 反序列化时，属性不存在的兼容处理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(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)));// 添加自定义序列化器和反序列化器this.registerModule(simpleModule);}
}

结果