一、使用的技術：
- Gradle
- Java annotation
- Spring Boot
dependencies {
compile 'org.springframework.boot:spring-boot-starter:1.2.7.RELEASE'
compile 'org.quartz-scheduler:quartz:2.2.2'
compile 'org.springframework:spring-context-support:4.1.8.RELEASE'
}
三、開始寫程式首先建置Service，定義將在排程中執行的類別和方法，
在此範例中我定義了一個打招呼以及定期print時間的功能。
package app.service;
import java.util.Calendar;
public class HelloService {
public void Hello(){
System.out.println("Hello!Jason");
System.out.println(Calendar.getInstance().getTime());
}
}
接著建置一個SchedulConfig，
使用Java annotation 的方式來產生(管理)Spring製造的bean。
package app.config;
import org.quartz.Trigger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.quartz.CronTriggerFactoryBean;
import org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean;
import org.springframework.scheduling.quartz.SchedulerFactoryBean;
@Configuration
public class SchedulConfig {
@Bean //1.將HelloService納入Spring來管理
public HelloService helloService(){
return new HelloService();
}
@Bean
@Autowired //2.建立helloJob，將HelloService注入，指定執行的方法名稱
public MethodInvokingJobDetailFactoryBean helloJob(HelloService helloService){
MethodInvokingJobDetailFactoryBean bean = new MethodInvokingJobDetailFactoryBean();
bean.setTargetObject(helloService);
bean.setTargetMethod("Hello");
return bean;
}
@Bean
@Autowired //3.建立helloTrigger，將helloJob注入，指定執行的時間，參數依序是 秒 分 時 ...etc
public CronTriggerFactoryBean helloTrigger(MethodInvokingJobDetailFactoryBean helloJob){
CronTriggerFactoryBean bean = new CronTriggerFactoryBean();
bean.setJobDetail(helloJob.getObject());
bean.setCronExpression("0/10 * * * * ? ");
return bean;
}
@Bean
@Autowired //4.建立scheduler，可執行多個Trigger
public SchedulerFactoryBean schedulerFactoryBean(CronTriggerFactoryBean helloTrigger){
SchedulerFactoryBean bean = new SchedulerFactoryBean();
Trigger[] triggers = {helloTrigger.getObject()};
bean.setTriggers(triggers);
return bean;
}
}
接著Spring boot執行程式的方式如下:
package app;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class Application {
public static void main(String[] args) throws Exception {
// TODO Auto-generated method stub
SpringApplication.run(Application.class, args);
}
}
使用eclipse直接run application或是export jar執行都可以喔XDDDD
程式結果:
Hello!Jason Sat Nov 07 22:25:30 CST 2015 Hello!Jason Sat Nov 07 22:25:40 CST 2015 Hello!Jason Sat Nov 07 22:25:50 CST 2015 Hello!Jason Sat Nov 07 22:26:00 CST 2015 ...
