问题描述
我尝试使用以下格式解析日期: ddYYYY
。例如,我有字符串 141968
,我想知道 day = 14
和 year = 1968
。
I try to parse a date with this format: ddYYYY
. For example, I have the string 141968
, and I want to know that day = 14
and year = 1968
.
我想我必须直接使用 TemporalAccessor
给出通过 DateTimeFormatter.parse(String)
,但我找不到如何使用此结果。在调试时,我看到结果是 java.time.Parsed
,它不是公共的,但在字段中包含我想要的信息 fieldValues
。
I suppose I have to use directly a TemporalAccessor
gave by DateTimeFormatter.parse(String)
, but I cannot find how to use this result. While debugging I see the result is a java.time.Parsed
which is not public but contains informations I want in field fieldValues
.
如何解析这种特定格式?
How can I parse this particular format?
谢谢。
推荐答案
一种方法是默认失踪月份字段:
One approach is to default the missing month field:
DateTimeFormatter f = new DateTimeFormatterBuilder()
.appendPattern("ddyyyy")
.parseDefaulting(MONTH_OF_YEAR, 1)
.toFormatter();
LocalDate date = LocalDate.parse("141968", f);
System.out.println(date.getDayOfMonth());
System.out.println(date.getYear());
另一种是查询 TemporalAccessor
:
DateTimeFormatter f = DateTimeFormatter.ofPattern("ddyyyy");
TemporalAccessor parsed = f.parse("141968");
System.out.println(parsed.get(ChronoField.YEAR));
System.out.println(parsed.get(ChronoField.DAY_OF_MONTH));
(注意使用y而不是Y进行解析)
(Note the use of "y", not "Y" for parsing)
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