Java8 对于LocalDateTime的序列化和反序列化

Posted 2023-02-25 刘元涛

这里以jackjson为例

配置反序列化工具

/**
 * 时间戳反序列化时间
 *
 * @author liuyuantao
 */
public class Str2LocalDateTimeDeserializer extends JsonDeserializer<LocalDateTime> 

    private static final String STANDARD_PATTERN = "yyyy-MM-dd HH:mm:ss";

    @Override
    public LocalDateTime deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException 
        DateTimeFormatter formatterDateTime = DateTimeFormatter.ofPattern(STANDARD_PATTERN);
        String timeStr = jsonParser.getValueAsString();
        return LocalDateTime.parse(timeStr, formatterDateTime);
    

解决1：

配置全局日期格式化

@Configuration
public class WebMvcConfig implements WebMvcConfigurer 

    @Value("$spring.jackson.date-format:yyyy-MM-dd HH:mm:ss")
    private String pattern;

    @Bean
    public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer() 
        return builder -> 
            DateTimeFormatter formatter = DateTimeFormatter.ofPattern(pattern);
            //返回时间数据序列化
            builder.serializerByType(LocalDateTime.class, new LocalDateTimeSerializer(formatter));
            //接收时间数据反序列化
            builder.deserializerByType(LocalDateTime.class, new LocalDateTimeDeserializer(formatter));
        ;
    

解决2:

在LocalDateTime 实体类使用注解

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