1.数据导出的时候

/*LocalDateTime要用DateTimeFormatter*/
DateTimeFormatter format = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");

String format1 = format.format(starttime);

2.前台提交的时间,后台需要在实体类写注解

@DateTimeFormat(pattern = "yyyy-MM-dd")
private LocalDate hpstartBegindate;

@DateTimeFormat(pattern = "yyyy-MM-dd")
private LocalDate hpstarEnddate;

@DateTimeFormat(pattern = "HH:mm:ss")
private LocalTime hpstarBegintime;

@DateTimeFormat(pattern = "HH:mm:ss")
private LocalTime hpstarEndtime;

@DateTimeFormat(pattern = "yyyy-MM-dd")
private LocalDate hpDisStarttime;

@DateTimeFormat(pattern = "yyyy-MM-dd")
private LocalDate hpDisEndtime;

不然后台接收不了数据,报500错误