Spring timed task time format cronexpression settings

Org.springframework.scheduling.quartz.CronTriggerBean allows you to more precisely control the run time of a task and only needs to set its Cronexpression property. A cronexpression expression has at least 6 (or possibly 7) time elements separated by a space. From left to right, these elements are defined as follows: 1. Seconds (0–59) 2. Minutes (0–59) 3. Hours (0–23) 4. The date in the month (1–31) 5. Month (1–12 or JAN–DEC) 6. Day of the week (1–7 or Sun–sat) 7. Year (1970–2099) 0 0 10,14,16 * *? Daily 10 o'clock in the morning, 2 o'clock in the afternoon and 4 o'clock in the afternoon 0 0,15,30,45 * 1-10 *? Every 15 minutes, 30 0 0 1 1 in the first 10 days of each month? 2012 30 seconds at midnight on January 1, 2012 0 0 8-5? * Mon-fri the available values for each working day are as follows: seconds 0-59,-*/min 0-59,-*/hour 0-23,-*/day 1-31,-*? /L W C month 1-12 or JAN-DEC,-*/week 1-7 or Sun-sat,-*? /L C # Year (optional field) empty, 1970-2099,-*/Available values detailed analysis is as follows: "*"--the character can be used for all fields, in the "Sub" field is set to "*" means "every Minute" meaning. “?” --characters can be used in the "Day" and "Week" fields. It is used to specify ' ambiguous values '. This is used when you need to specify one of these two fields instead of the other. In the following example, you can see its meaning. "-"--the character is used to specify a range of values, such as "10-12" in the "Hour" field for "10 point to 12 points". ","--the character specifies a number of values. For example, in the "Weeks" field is set to "Mon,wed,fri" means "The days Monday, Wednesday, and Friday". "/"--the character is used to specify the increment of a value. For example, the "Seconds" field is set to "0/15" for "No. 0, 15, 30, and 45 seconds". "5/15" means "5th, 20, 35, and 50". The "*" character in front of '/' is equivalent to the specified starting at 0 seconds. Each field has a series of values that can start or end. For the seconds and minutes fields, the range of valuesis 0 to 59, which is 0 to 23 for the hour field, 0 to 31 for the day field, and 1 to 12 for the month field. The "/" field is simply a value that helps you to start "nth" within the allowable numeric range. "L"--characters can be used in both "Day" and "Week" fields. It is the abbreviation for "last", but it has different meanings in both fields. For example, "L" in the day field means "the last day of one months"-for January is number 31st for February is 28th (not a leap year). In the "Weeks" field, it simply represents "7" or "SAT", but if it is followed by a number in the "Weeks" field, it means "the last one weeks of the month X"-such as "6L" for "The last Friday of the month". When using the ' L ' option, it is important to specify the list or scope of the determination, otherwise you will be confused by the result. "W"--Available for the "Day" field. Used to specify the most recent weekday (Monday to Friday) for the given date of the calendar. For example, you set the "Day" field to "15W", meaning: "The most recent working day from the month of 15th." So if number 15th is Saturday, the trigger will be called at 14th, or Friday. If number 15th is Sunday, the trigger will be triggered at 16th, or Monday. If number 15th is Tuesday, it will be triggered the same day. However, if you set the "Day" field to "1W" and the number is Saturday, the trigger will be triggered in the next Monday, which is the 3rd number of the month, because it will not cross the range boundary of the value of the month. The ' W ' character can only be used when the value of the day field is a single day instead of a series of values. The "L" and "W" can be combined for the "day" field expressed as ' LW ', meaning "the last working day of the month". "#"--the character can be used in the "Weeks" field. The character denotes "week X of the month", such as "6#3", which represents the third Friday of the month (6 for Friday and the third for the month "#3"). Another example: "2#1" = the first Monday of the month and "4#5" = Fifth Wednesday of the month. Note If you specify "#5" that the month does not have a fifth "week X", the month is not triggered. The "C"--character can be used for the "Day" and "Week" fields, which is the abbreviation for "Calendar". It represents the value, if any, that is computed based on the associated calendar. If there is no associated calendar, it is equivalent to including all calendars. The day field value of 5C means "the first day of the calendar or after 5th," and the "Weeks" field value "1C" means "the first day of the calendar or after Sunday." Valid characters are not case-sensitive for the month field and the weeks field. Some examples: "0 0 12 * *?" 12 o'clock noon every day. 0 15 10? * * "trigger every 10:15" 0 15 10* * * 0 15 10 * * per day 10:15 * "Trigger every day 10:15" 0 15 10 * *? 2005 "2005-year 10:15 daily trigger" 0 * 14 * *? "every day from 2 o'clock in the afternoon to 2:59 every minute trigger" 0 0/5 14 * *? "Start every day from 2 o'clock in the afternoon to 2:55 end every 5 minutes trigger" 0 0/5 14,18 * * ? "0 0-5 14 * * Every 5 minutes from 2 o'clock in the afternoon to 2:55 and 6 to 6:55 per day" 14:05 10,44 0 per minute "14:00 to 14 times a day"? 3 WED "March 14:10 and 14:44 triggers per Wednesday" 0 15 10? * MON-FRI "10:15 triggers for each Monday, Tuesday, Wednesday, Thursday, Friday" 0 15 10 15 *? "15th per month 10:15 trigger" 0 10:15 L *? "The last day of the month is 0 triggers, 15, 10? * 6L "Last Friday of every month 10:15