SpringBoot時間格式化的方法小結

更新時間：2023年10月08日 08:58:06 作者：xyy123

SpringBoot中的時間格式化通常指的是將Java中的日期時間類型轉換為指定格式的字符串,或者將字符串類型的時間解析為Java中的日期時間類型,本文小編將給大家詳細總結了SpringBoot時間格式化的方法,剛興趣的小伙伴跟著小編一起來看看吧

方法一：屬性上加注解

時間屬性上添加注解：@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")

@Data  
@Builder  
@NoArgsConstructor  
@AllArgsConstructor  
public class Employee implements Serializable {  
    private Long id;  
    private String username;  
    private String name;  
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")  
    private LocalDateTime createTime;  
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")  
    private LocalDateTime updateTime;  
}

方法二：方法參數(shù)中添加注解@DateTimeForm

/**  
* 營業(yè)額統(tǒng)計  
* @param begin  
* @param end  
* @return  
*/  
@GetMapping("/turnoverStatistics")  
@ApiOperation("營業(yè)額統(tǒng)計")  
public Result<TurnoverReportVO> turnoverStatistics(  
    @DateTimeFormat(pattern = "yyyy-MM-dd") LocalDate begin,  
    @DateTimeFormat(pattern = "yyyy-MM-dd") LocalDate end){  
    log.info("營業(yè)額數(shù)據(jù)統(tǒng)計：{},{}",begin,end);  
    return Result.success(reportService.getTurnoverStatistics(begin,end));  
}

方法三：拓展spring mvc的消息轉換器

重寫父類方法extendMessageConverters

@Configuration  
@Slf4j  
public class WebMvcConfiguration extends WebMvcConfigurationSupport {  
    @Autowired  
    private JwtTokenAdminInterceptor jwtTokenAdminInterceptor;  
    @Autowired  
    private JwtTokenUserInterceptor jwtTokenUserInterceptor;  
    /**  
    * 注冊自定義攔截器  
    * @param registry  
    */  
    protected void addInterceptors(InterceptorRegistry registry) {  
        log.info("開始注冊自定義攔截器...");  
        registry.addInterceptor(jwtTokenAdminInterceptor)  
        .addPathPatterns("/admin/**")  
        .excludePathPatterns("/admin/employee/login");  
        registry.addInterceptor(jwtTokenUserInterceptor)  
        .addPathPatterns("/user/**")  
        .excludePathPatterns("/user/user/login")  
        .excludePathPatterns("/user/shop/status");  
    }  
    /**  
    * 設置靜態(tài)資源映射，主要是訪問接口文檔（html、js、css）  
    * @param registry  
    */  
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {  
    log.info("開始設置靜態(tài)資源映射...");  
    registry.addResourceHandler("/doc.html").addResourceLocations("classpath:/META-INF/resources/");  
    registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");  
    }  
    /**  
    * 擴展Spring MVC框架的消息轉化器  
    * @param converters  
    */  
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {  
        log.info("擴展消息轉換器...");  
        //創(chuàng)建一個消息轉換器對象  
        MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();  
        //需要為消息轉換器設置一個對象轉換器，對象轉換器可以將Java對象序列化為json數(shù)據(jù)  
        converter.setObjectMapper(new JacksonObjectMapper());  
        //將自己的消息轉化器加入容器中  
        converters.add(0,converter);  
    }  
}

創(chuàng)建對象轉換器JacksonObjectMapper

/**  
* 對象映射器:基于jackson將Java對象轉為json，或者將json轉為Java對象  
* 將JSON解析為Java對象的過程稱為 [從JSON反序列化Java對象]  
* 從Java對象生成JSON的過程稱為 [序列化Java對象到JSON]  
*/  
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();  
    //收到未知屬性時不報異常  
    this.configure(FAIL_ON_UNKNOWN_PROPERTIES, false);  
    //反序列化時，屬性不存在的兼容處理  
    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)));  
    //注冊功能模塊 例如，可以添加自定義序列化器和反序列化器  
    this.registerModule(simpleModule);  
    }  
}