can you reduce the amount of configuration to improve development efficiency,
recently I looked at spring's scheduled scheduling method using annotations,
it feels very convenient, at least There are a lot less things to configure,
so leave it as a reminder,
first configure our spring.xml
xmlns join
xmlns:task="http://www.springframework.org/schema/task"
xsi:schemaLocation added
http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.1.xsd
task task scan annotation is enabled
<task:annotation-driven/>
test code
@Component //import org.springframework.stereotype.Component;
public class MyTestServiceImpl implements IMyTestService {
@Scheduled(cron="0/5 * * * * ? ") //Execute every 5 seconds
@Override
public void myTest(){
System.out.println("Enter the test");
}
}
A few points to note:
1. Spring's @Scheduled annotation needs to be written on the implementation,
2. The task method of the timer cannot have a return value (if there is a return value, spring will tell you that there is an error and need to be set during initialization A certain value of a proxytargetclass is true, go to Baidu google for details)
3. There must be component annotations on the implementation class @Component
The rest is the corn expression, the specific use and parameters, please Baidu google,
the following are just a few examples A formula
CRON expression Meaning
"0 0 12 * * ?" Triggered at 12 noon every day
"0 15 10 ? * *" Triggered at 10:15 every morning
"0 15 10 * * ?" Triggered at 10:15 every morning
" 0 15 10 * * ? *" triggers
"0 15 10 * * ? 2005" every day at 10:15 am
"0 * 14 * * ?" every day in 2005 from 2 pm to 2:59 Trigger
"0 0/5 14 * * ?" every minute every day from 2pm to 2:55pm Trigger
"0 0/5 14,18 * * ?" every 5 minutes from 2pm to 2:55 2:
"0 0-5 14 * * ?" is triggered every 5 minutes in the two time periods of 55 and 6:00 to 6:55 every day from 14:00 to 14:05 Trigger
"0 10,44 14 ? 3 WED" every minute every Wednesday at 14:10 and 14:44 in March
"0 15 10 ? * MON-FRI" Triggered at 10:15 every Monday, Tuesday, Wednesday, Thursday, Friday