Cron Expression recurring after every two week

0
votes

I need to trigger my mail every alternate Monday and Wednesday. I am using Java Spring in my application. I have try using this cron expression 00 15 11 ? * MONDAY#1 and same for Wednesday, but it is triggering on 1 Monday and Wednesday of the month. What I want is it should trigger on Monday and Wednesday of first, third and fifth week of each month.

Can someone please help me in creating this cron expression.

2
javaspringcroncronexpression

2 Answers

1
votes
All type of cron exrpession you build from website [Cron Maker] 
I have one solution to meet with your requirement:
Algorithm:
1. Run cron every MON and WED day.


    eg. 0 0 12 ? * MON,WED * 
       Start time   Monday, September 7, 2015 6:10 AM Change
       Next 5 scheduled dates   
       a.   Monday, September 7, 2015 12:00 PM
       b.   Wednesday, September 9, 2015 12:00 PM
       c.   Monday, September 14, 2015 12:00 PM
       d.   Wednesday, September 16, 2015 12:00 PM
       e.   Monday, September 21, 2015 12:00 PM

2. Now pro-grammatically control on odd week. for eg in java


    Calendar c = Calendar.getInstance();
       if(c.get(Calendar.WEEK_OF_MONTH) % 2 != 0) {
             //execute job
       } else {
             //not execute job just skip operation
       }

if i am able to made actual cron then i will post it.

0
votes

What you want is

00 15 11 ? * MONDAY#1,MONDAY#3,MONDAY#5,WEDNESDAY#1,WEDNESDAY#3,WEDNESDAY#5"

but I don't think it's going to work, because with #, only one expression is allowed. So, you'll have to have multiple cron entries, like the following.

00 15 11 ? * MONDAY#1
00 15 11 ? * MONDAY#3
00 15 11 ? * MONDAY#5
00 15 11 ? * WEDNESDAY#1
00 15 11 ? * WEDNESDAY#3
00 15 11 ? * WEDNESDAY#5