【springboot】springboot日期格式化

前言

方法1：https://www.cnblogs.com/christopherchan/p/12404804.html
方法2：https://blog.csdn.net/tianhouquan/article/details/91040087

示例

我使用的方法1

• 配置

# jackson
spring.application.jackson.default-property-inclusion=ALWAYS
spring.application.jackson.time-zone=GMT+8
spring.application.jackson.date-format=yyyy-MM-dd HH:mm:ss

• 代码

@Configuration
public class JacksonConfig {
    
    
    /** 默认日期时间格式 */
    public static final String DEFAULT_DATE_TIME_FORMAT = "yyyy-MM-dd HH:mm:ss";
    /** 默认日期格式 */
    public static final String DEFAULT_DATE_FORMAT = "yyyy-MM-dd";
    /** 默认时间格式 */
    public static final String DEFAULT_TIME_FORMAT = "HH:mm:ss";

    @Bean
    public MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter() {
    
    
        MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
        ObjectMapper objectMapper = new ObjectMapper();

        // 忽略json字符串中不识别的属性
        objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        // 忽略无法转换的对象 
        objectMapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
        // PrettyPrinter 格式化输出
        objectMapper.configure(SerializationFeature.INDENT_OUTPUT, true);
        // NULL不参与序列化
        objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);

        // 指定时区
        objectMapper.setTimeZone(TimeZone.getTimeZone("GMT+8:00"));
        // 日期类型字符串处理
        objectMapper.setDateFormat(new SimpleDateFormat(DEFAULT_DATE_TIME_FORMAT));

        // java8日期日期处理
        JavaTimeModule javaTimeModule = new JavaTimeModule();
        javaTimeModule.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_TIME_FORMAT)));
        javaTimeModule.addSerializer(LocalDate.class, new LocalDateSerializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_FORMAT)));
        javaTimeModule.addSerializer(LocalTime.class, new LocalTimeSerializer(DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT)));
        javaTimeModule.addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_TIME_FORMAT)));
        javaTimeModule.addDeserializer(LocalDate.class, new LocalDateDeserializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_FORMAT)));
        javaTimeModule.addDeserializer(LocalTime.class, new LocalTimeDeserializer(DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT)));
        objectMapper.registerModule(javaTimeModule);

        converter.setObjectMapper(objectMapper);
        return converter;
    }
}