springboot 集成Quartz 实现定时任务
本章我们使用Quartz在java project的项目中进行定时任务的实现，首先我们需要在pom文件引入 quartz jar 包，
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-quartz</artifactId>
</dependency>
接下来我们编写具体的执行任务类，具体的执行需要继承QuartzJobBean 类 或者job接口都可以，我们这里是继承QuartzJobBean 类 ，如下：
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.scheduling.quartz.QuartzJobBean;
public class HelloworldJob extends QuartzJobBean {
@Override
public void executeInternal(JobExecutionContext context) throws JobExecutionException {
// TODO Auto-generated method stub
System.out.println("Hello world!:" + context.getJobDetail().getKey());
}
}
接下来编写任务的启动类，需要在类上加@Configuration注解，以便被扫描到，在方法上增加注解@Bean，注入倒容器中，如下：
import org.quartz.CronScheduleBuilder;
import org.quartz.JobBuilder;
import org.quartz.JobDetail;
import org.quartz.Trigger;
import org.quartz.TriggerBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
public class QuartzDemo {
@Bean
public JobDetail myJobDetail(){
JobDetail jobDetail = JobBuilder.newJob(HelloworldJob.class)
.withIdentity("myJob1","myJobGroup1")//定义Job类为HelloworldJob类，这是真正的执行逻辑所在
.usingJobData("job_param","job_param1")//给任务execute传递参数
.storeDurably()
.build();
return jobDetail;
}
@Bean
public Trigger myTrigger(){
Trigger trigger = TriggerBuilder.newTrigger()
.forJob(myJobDetail())
.withIdentity("myTrigger1","myTriggerGroup1")
.usingJobData("job_trigger_param","job_trigger_param1")
.startNow()
//.withSchedule(SimpleScheduleBuilder.simpleSchedule().withIntervalInSeconds(5).repeatForever())
.withSchedule(CronScheduleBuilder.cronSchedule("0/5 * * * * ? 2019"))
.build();
return trigger;
}
}
下面启动项目就能看到任务打印信息了：
Hello world Quartz !:myJobGroup1.myJob1
Hello world Quartz !:myJobGroup1.myJob1
Hello world Quartz !:myJobGroup1.myJob1
Hello world Quartz !:myJobGroup1.myJob1
Hello world Quartz !:myJobGroup1.myJob1
Hello world Quartz !:myJobGroup1.myJob1
Hello world Quartz !:myJobGroup1.myJob1
Hello world Quartz !:myJobGroup1.myJob1