CODEWITHSUNDEEP
springspring-bootcronschedulerscheduling
Najib
Najib

Reputation: 1

spring cron scheduled not running in the second day

I was tried to implement scheduler with setting for every day. Then I build to a jar file and running with "java -jar". I trying on my computer to still alive until 2 days for test it. Yesterday it's works. But when I look today is not running. Refer from this https://riptutorial.com/spring/example/21209/cron-expression.

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.scheduling.annotation.EnableScheduling;

@SpringBootApplication
@EnableScheduling
public class DemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }

}

import java.text.SimpleDateFormat;
import java.util.Date;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

@Component
public class Scheduler {

    private static final Logger log = LoggerFactory.getLogger(Scheduler.class);

    @Scheduled(cron = "0 0 18 * * ?")
    public void currentTime() {
        SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm:ss");
        log.info("Current Time      = {}", dateFormat.format(new Date()));
        log.info("Excel File has been generated");
    }

}

this log on the second day

Upvotes: 0

Views: 11423

Answers (2)

Jason
Jason

Reputation: 66

Najib, it seems like this should be straightforward, so I was testing it locally and I was having a difficult time getting an instance time at a specific hour to run, but I figured out why I had a problem. Can I ask, are you calculating your cron time in UTC? I wasn't and it was throwing off my result.

Working example

package com.brand.server.v1;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

import java.text.SimpleDateFormat;
import java.util.Date;

@Component
public class Scheduler {

    private static final Logger LOG = LoggerFactory.getLogger(Scheduler.class);

    static {
        SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
        LOG.info("The current time is: {}", sdf.format(new Date()));
    }

    @Scheduled(cron = "0 30 22 * * ?")
    public void currentTimeDifferentName() {
        SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
        LOG.info("Current time = {}", sdf.format(new Date()));
        LOG.info("File has been generated");
    }


    @Scheduled(cron = "0 */15 * * * ?")
    public void heartbeat() {
        SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
        LOG.info("Heartbeat = {}", sdf.format(new Date()));
    }
}

Log snippet from 20:00 Mountain Standard Time

server_1     | 2020-05-14 22:24:48.496  INFO 1 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
server_1     | 2020-05-14 22:24:48.499  INFO 1 --- [           main] com.brand.server.v1.ServerApplication    : Started ServerApplication in 5.181 seconds (JVM running for 5.827)
server_1     | 2020-05-14 22:30:00.001  INFO 1 --- [   scheduling-1] com.brand.server.v1.Scheduler            : Heartbeat = 22:30:00
server_1     | 2020-05-14 22:30:00.004  INFO 1 --- [   scheduling-1] com.brand.server.v1.Scheduler            : Current time = 22:30:00
server_1     | 2020-05-14 22:30:00.004  INFO 1 --- [   scheduling-1] com.brand.server.v1.Scheduler            : File has been generated
server_1     | 2020-05-14 22:45:00.000  INFO 1 --- [   scheduling-1] com.brand.server.v1.Scheduler            : Heartbeat = 22:45:00
server_1     | 2020-05-14 23:00:00.001  INFO 1 --- [   scheduling-1] com.brand.server.v1.Scheduler            : Heartbeat = 23:00:00
server_1     | 2020-05-14 23:15:00.000  INFO 1 --- [   scheduling-1] com.brand.server.v1.Scheduler            : Heartbeat = 23:15:00
...
server_1     | 2020-05-15 22:15:00.000  INFO 1 --- [   scheduling-1] com.brand.server.v1.Scheduler            : Heartbeat = 22:15:00
server_1     | 2020-05-15 22:30:00.000  INFO 1 --- [   scheduling-1] com.brand.server.v1.Scheduler            : Heartbeat = 22:30:00
server_1     | 2020-05-15 22:30:00.000  INFO 1 --- [   scheduling-1] com.brand.server.v1.Scheduler            : Current time = 22:30:00
server_1     | 2020-05-15 22:30:00.000  INFO 1 --- [   scheduling-1] com.brand.server.v1.Scheduler            : File has been generated

Upvotes: 0

Deep Dalsania
Deep Dalsania

Reputation: 453

  • I saw your images and I tested your cron expression here and It gives an error i.e Support for specifying both a day-of-week AND a day-of-month parameter is not implemented.
  • Right Cron Expression
    0 30 16 * * ?
  • It specify that Your job is trigger 16:30: 00 pm every day.
  • Also as per @Jason's answer you also have to use @EnableScheduling to your configuration class.

Reference: Cron Expression

Upvotes: 3

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