datetime-java-c#

[ichengzi]

java

// 自定义格式化:
DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy/MM/dd HH:mm:ss");
System.out.println(dtf.format(LocalDateTime.now()));
//2020/09/08 21:04:12
LocalDateTime dt2 = LocalDateTime.parse("2019/11/30 05:16:17", dtf);
System.out.println(dt2);
//2019-11-30T05:16:17

LocalDateTime dt2 = LocalDateTime.parse("2019/11/30 5:16:17", dtf);
// 时间格式异常

org.joda.time.format.DateTimeFormatter pattern = DateTimeFormat.forPattern("yyyy/MM/dd HH:mm:ss");
DateTime dateTime = pattern.parseDateTime("2019/11/30 5:16:17");
System.out.println(dateTime.getZone());
//Asia/Shanghai
System.out.println(dateTime);
//2019-11-30T05:16:17.000+08:00
System.out.println(dateTime.toString("yyyy/MM/dd HH:mm:ss.SSS"));
//2019/11/30 05:16:17.000

org.joda.time.format.DateTimeFormatter pattern1 = DateTimeFormat.forPattern("HH:mm:ss");
DateTime dateTime1 = pattern1.parseDateTime("5:16:17");
System.out.println(dateTime1);
//1970-01-01T05:16:17.000+08:00

c#

DateTime.parse("2019/11/30 5:16:17");
//2020/9/8 5:16:17
DateTime.parse("2019/11/30 05:16:17");
//2020/9/8 5:16:17
DateTime.Parse("5:16:17");// c#的默认日期是当天，java joda datetime默认日期是 1970-01-01
//2020/9/8 5:16:17

DateTime.ToString();
//不提供输出格式时，序列化格式是按照当前线程的Culture里配置的格式。 
//通过修改windows的时间格式，改变展示