Spring @Scheduled with CRON expression

cron - 固定的時間或週期，週期式行為同 fixedRate
固定六個值：秒(0-59) 分(0-59) 時(0-23) 日(1-31) 月(1-12) 週(1,日-7,六)
日與週互斥，其中之一必須為 ?
可使用的值有：單一數值（26）、範圍（50-55）、清單（9,10）、不指定（*）與週期（*/ 3）
0 0 12 * * ? Fire at 12pm (noon) every day
0 15 10 ? * * Fire at 10:15am every day
0 15 10 * * ? Fire at 10:15am every day
0 15 10 * * ? * Fire at 10:15am every day
0 15 10 * * ? 2005 Fire at 10:15am every day during the year 2005
0 * 14 * * ? Fire every minute starting at 2pm and ending at 2:59pm, every day
0 0/5 14 * * ? Fire every 5 minutes starting at 2pm and ending at 2:55pm, every day
0 0/5 14,18 * * ? Fire every 5 minutes starting at 2pm and ending at 2:55pm, AND fire every 5 minutes starting at 6pm and ending at 6:55pm, every day
0 0-5 14 * * ? Fire every minute starting at 2pm and ending at 2:05pm, every day
0 10,44 14 ? 3 WED Fire at 2:10pm and at 2:44pm every Wednesday in the month of March.
0 15 10 ? * MON-FRI Fire at 10:15am every Monday, Tuesday, Wednesday, Thursday and Friday