spring4 cronTrigger和simpleTrigger实现方法

Posted 2020-08-15 HalfWater

Quartz官方网站对SimpleTrigger和CronTrigger的简单对比： 
     SimpleTrigger is handy if you need ‘one-shot‘ execution (just single execution of a job at a given moment in time), or if you need to fire a job at a given time, and have it repeat N times, with a delay of T between executions.当你需要的是一次性的调度（仅是安排单独的任务在指定的时间及时执行），或者你需要在指定的时间激活某个任务并执行N次，设置每次任务执行的间隔时间T。那此时使用SimpleTrigger将是非常方便的。 

    CronTrigger is useful if you wish to have triggering based on calendar-like schedules - such as "every Friday, at noon" or "at 10:15 on the 10th day of every month."如果你需要安排的任务时基于日期的-比如"每个星期五正午"或者"每个月10号的10:15"，使用CronTrigger将是非常有用的。

1、配置applicationcontext.xml

<!-- cronTrigger实现方式 -->
<bean name="exampleJob" class="org.springframework.scheduling.quartz.JobDetailBean">
        <property name="jobClass" value="com.ouku.entities.report.ReportTimerTask" />
        <property name="jobDataAsMap">
            <map>
                <entry key="timeout" value="3600" />
            </map>
        </property>
    </bean>
    <bean id="springUtil" class="com.ouku.util.SpringUtil" />
    <bean id="cronTrigger"
        class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
        <property name="jobDetail" ref="exampleJob" />
        <!-- run every morning at 6 AM -->
        <!-- <property name="cronExpression" value="0 0 6 * * ?" /> -->
       <!-- <property name="cronExpression" value="0 0/1 * * * ?" /> --><!-- 每分钟 -->
        <property name="cronExpression" value="0/5 * * * * ?" /> <!-- 每秒 -->
    </bean>

    <bean id="exampleBusinessObject" class="com.ouku.entities.report.ReportTimerTaskTwo" />
    <bean id="jobDetail"
<!-- simpleTrigger实现方式 -->
class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
        <property name="targetObject" ref="exampleBusinessObject" />
        <property name="targetMethod" value="doIt" />
        <property name="concurrent" value="false" />
    </bean>
    <bean id="simpleTrigger"
          class="org.springframework.scheduling.quartz.SimpleTriggerFactoryBean">
        <!-- see the example of method invoking job above -->
        <property name="jobDetail" ref="jobDetail" />
        <!-- 0 seconds -->
        <property name="startDelay" value="0" />
        <!-- repeat every 5 seconds -->
        <property name="repeatInterval" value="5000" />
    </bean>

    <!-- 总调度用于启动Spring定时器 -->
    <bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
        <property name="triggers">
            <list>
                <ref bean="cronTrigger" />
                <ref bean="simpleTrigger"/>
            </list>
        </property>
    </bean>

2.利用cronTrigger的Java实现

package com.ouku.entities.report;

import java.util.Date;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.scheduling.quartz.QuartzJobBean;
import com.ouku.report.ReportTask;

public class ReportTimerTask extends QuartzJobBean  {
    private int timeout;



    public void setTimeout(int timeout) {
        this.timeout = timeout;
    }

    @Override
    protected void executeInternal(JobExecutionContext arg0)
            throws JobExecutionException {
        try {
            Date date = new Date();
            String dd = " " + date.getMinutes() + ":" + date.getSeconds() + " ";
            System.out.println("AAA" + dd);
            //to do
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

3.利用simpleTrigger的Java实现

package com.ouku.entities.report;

import java.util.Date;

import org.quartz.JobExecutionException;
import com.ouku.report.ReportTask;

public class ReportTimerTaskTwo {

    public void doIt() throws JobExecutionException {
        try {
            Date date = new Date();
            String dd = " " + date.getMinutes() + ":" + date.getSeconds() + " ";
            System.out.println("sss1" + dd);
            //to do ..
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

默认情况下，当Job执行时间超过间隔时间时，调度框架为了能让任务按照我们预定的时间间隔执行，会马上启用新的线程执行任务。