My requirement is I want to schedule a task that should run once a day.For that I am using following code:
public class setAutoReminder {
EscalationDAO escalationDAO=new EscalationDAO();
final SendMail sendMail=new SendMail();
public void fetch(){
Date date=new Date();
Timer timer = new Timer();
timer.schedule(new TimerTask(){
public void run(){
int number=escalationDAO.getAutoReminder();
System.out.println(number);
if(number>0) {
sendMail.sendMail();
}
}
},date, 1000000000);
}
}
but this code runs multiple times.I want it to runs once a day.What should I do?
With Spring (using lombok @Slf4j
):
@Slf4j
@Component
public class SetAutoReminder
{
@Autowired
private EscalationDAO escalationDAO;
@Autowired
private SendMail sendMail;
@Scheduled(cron = "0 0 0 * * *") // everyday at midnight
public void fetch(){
final int number = escalationDAO.getAutoReminder();
log.debug("Today number: {}", number);
if (number>0) {
sendMail.sendMail();
}
}
}
Tutorial on spring scheduling: springsource blog
If you don't have many scheduled jobs then don't add all the Spring baggage. Keep it simple.
Date date=new Date();
Timer timer = new Timer();
timer.schedule(new TimerTask(){
public void run(){
System.out.println("Im Running..."+new Date());
}
},date, 24*60*60*1000);//24*60*60*1000 add 24 hours delay between job executions.
This will do the stuff.
-Siva
您需要一个调度程序,如Quartz Scheduler
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