JDK8：无法解析LocalTime [英] JDK8: unable to parse LocalTime

问题描述

我设法将 String 解析为 LocalDate 对象：

DateTimeFormatter f1=DateTimeFormatter.ofPattern("dd MM yyyy");
LocalDate d=LocalDate.parse("26 08 1984",f1);
System.out.println(d); //prints "1984-08-26"

但我不能用<$ c $做同样的事情C>本地时间。这段代码：

But I cannot do the same with LocalTime. This piece of code:

DateTimeFormatter f2=DateTimeFormatter.ofPattern("hh mm");
LocalTime t=LocalTime.parse("11 08",f2); //exception here
System.out.println(t);

抛出 DateTimeParseException ：

Exception in thread "main" java.time.format.DateTimeParseException: Text '11 08' could not be parsed: Unable to obtain LocalTime from TemporalAccessor: {MinuteOfHour=8, HourOfAmPm=11},ISO of type java.time.format.Parsed
    at java.time.format.DateTimeFormatter.createError(Unknown Source)
    at java.time.format.DateTimeFormatter.parse(Unknown Source)
    at java.time.LocalTime.parse(Unknown Source)
    at com.mui.cert.Main.<init>(Main.java:21)
    at com.mui.cert.Main.main(Main.java:12)
Caused by: java.time.DateTimeException: Unable to obtain LocalTime from TemporalAccessor: {MinuteOfHour=8, HourOfAmPm=11},ISO of type java.time.format.Parsed
    at java.time.LocalTime.from(Unknown Source)
    at java.time.LocalTime$$Lambda$15/1854731462.queryFrom(Unknown Source)
    at java.time.format.Parsed.query(Unknown Source)
    ... 4 more

我做错了什么？

推荐答案

如果您使用特定格式，请根据 API ：

If you use a specific format, according to API:

字符串必须表示有效时间，并使用 DateTimeFormatter.ISO_LOCAL_TIME 。

hh mm 

24小时必须

HH mm

或12小时

kk mm

处理后的格式必须具备以下条件：

The handled formats must have this conditions:

• 每小时的两位数字。这是预先填充零以确保两位数。


• 冒号


• 小时的两位数。这是预先填充零以确保两位数。


• 如果第二分钟不可用，则表示格式已完成。


• 冒号


• 二分钟的两位数字。这是预先填充零以确保两位数。


• 如果纳秒级为零或不可用，则表示格式已完成。


• 小数点


• 纳秒级的一到九位数。根据需要输出许多数字。

• Two digits for the hour-of-day. This is pre-padded by zero to ensure two digits.
• A colon
• Two digits for the minute-of-hour. This is pre-padded by zero to ensure two digits.
• If the second-of-minute is not available then the format is complete.
• A colon
• Two digits for the second-of-minute. This is pre-padded by zero to ensure two digits.
• If the nano-of-second is zero or not available then the format is complete.
• A decimal point
• One to nine digits for the nano-of-second. As many digits will be output as required.

这篇关于JDK8：无法解析LocalTime的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！