getLocaleTimeFormatlink

说明link

The standard formats include four basic time formats:

• full should contain hour (h/H), minute (mm), second (ss), and zone (zzzz).
• long should contain hour, minute, second, and zone (z)
• medium should contain hour, minute, second.
• short should contain hour, minute.

Note: The patterns depend on whether the main country using your language uses 12-hour time or not:

• For 12-hour time, use a pattern like hh:mm a using h to mean a 12-hour clock cycle running 1 through 12 (midnight plus 1 minute is 12:01), or using K to mean a 12-hour clock cycle running 0 through 11 (midnight plus 1 minute is 0:01).
• For 24-hour time, use a pattern like HH:mm using H to mean a 24-hour clock cycle running 0 through 23 (midnight plus 1 minute is 0:01), or using k to mean a 24-hour clock cycle running 1 through 24 (midnight plus 1 minute is 24:01).