时间日期处理

港控/mmm° 2022-10-13 14:57 267阅读 0赞

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NzgzNjYw_size_16_color_FFFFFF_t_70]

Date from = Date.from(Instant.now());
            System.out.println("from "+from);
            DateTime begin = DateUtil.beginOfWeek(from);
            System.out.println("begin "+begin);
            Instant beginInstant = begin.toInstant(); ZoneId beginZoneId = ZoneId.systemDefault();
            System.out.println("beginInstant "+beginInstant);
            System.out.println("beginZoneId "+beginZoneId);
            LocalDateTime beginLocalDateTime = LocalDateTime.ofInstant(beginInstant, beginZoneId);
            System.out.println("beginLocalDateTime "+beginLocalDateTime);

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NzgzNjYw_size_16_color_FFFFFF_t_70 1]  
前端传给后端参数eg1加注解  
![在这里插入图片描述][20210707161816630.png]  
接收前端传进来的格式

@ApiModelProperty(value = "插入时间 yyyy-MM-dd HH:mm:ss", example = "2020-11-28 00:12:23", required = true)
        @JsonFormat(timezone = "GMT+8", shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd HH:mm:ss")
        @TableField(value = "insert_time", fill = FieldFill.INSERT_UPDATE)
        private LocalDateTime insertTime;

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NzgzNjYw_size_16_color_FFFFFF_t_70 2]

前端传给后端参数eg2  
实体类上不加时间格式化的注解  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NzgzNjYw_size_16_color_FFFFFF_t_70 3]

前后端都不加注解  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NzgzNjYw_size_16_color_FFFFFF_t_70 4]  
前后端一个加一个不加  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NzgzNjYw_size_16_color_FFFFFF_t_70 5]

总结：加注解的话会进行格式化对其他操作没有影响

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[20210707161816630.png]: /images/20221005/0c1882c0d2a548079daa2411a5ac9ed3.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NzgzNjYw_size_16_color_FFFFFF_t_70 2]: /images/20221005/915d7e8c760c479ba4af476255022feb.png
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