spring定时器（二）

此定时器可重置定时时间。

1. spring的定时器配置文件application.xml:

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 3     xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
 4     xmlns:context="http://www.springframework.org/schema/context" xmlns:dwr="http://www.directwebremoting.org/schema/spring-dwr"
 5     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
 6         http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
 7         http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
 8         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
 9         http://www.directwebremoting.org/schema/spring-dwr http://www.directwebremoting.org/schema/spring-dwr-3.0.xsd">
10
11     <!-- 定时器bean类定义 -->
12     <bean id="×××Daemon" class="com.×××.×××.×××Daemon">
13         <!-- 指定定时器调度工厂 -->
14         <property name="scheduler" ref="timingPrintSchedulerFactory" />
15         <!-- 向定时器注入bean -->
16         <property name="×××" ref="×××" />
17     </bean>
18
19     <!-- 任务1定义 -->
20     <bean id="×××DaemonJob"
21         class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
22         <!-- 任务1所在的类 -->
23         <property name="targetObject" ref="×××Daemon" />
24         <!-- 任务1所对应的方法名 -->
25         <property name="targetMethod" value="executeInternal" />
26         <property name="concurrent" value="false" />
27     </bean>
28
29     <!-- 任务1触发器  -->
30     <bean id="×××JobTrigger"
31         class="org.springframework.scheduling.quartz.CronTriggerBean">
32         <property name="jobDetail" ref="×××DaemonJob"/>
33         <property name="cronExpression" value="0 0 0 ? * *"/>    <!-- 默认每天凌晨0点整打印  -->
34         <property name="startDelay" value="10000"/>         <!-- 延迟10秒（10000毫秒）启动 -->
35     </bean>
36
37     <!-- 重置定时时间任务  -->
38     <bean id="reset×××DaemonJob"
39         class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
40         <property name="targetObject" ref="×××Daemon" />
41         <property name="targetMethod" value="resetJob" />
42         <property name="concurrent" value="false" />
43     </bean>
44
45     <!-- 重置定时时间任务触发器  -->
46     <bean id="reset×××JobTrigger"
47         class="org.springframework.scheduling.quartz.SimpleTriggerBean">
48         <property name="jobDetail" ref="reset×××DaemonJob"/>
49         <property name="repeatInterval" value="10000"/>            <!-- 每隔10秒扫描一次 -->
50         <property name="startDelay" value="10000"/>         <!-- 延迟10秒（10000毫秒）启动 -->
51     </bean>
52
53     <!-- 调度工厂，触发器集合 -->
54     <bean id="timingPrintSchedulerFactory" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
55         <property name="triggers">
56             <list>
57                 <ref bean="×××JobTrigger"/>
58                 <ref bean="reset×××JobTrigger"/>
59             </list>
60         </property>
61     </bean>
62
63 </beans>

2. 定时器对应的类

 1 import org.quartz.Scheduler;
 2 import org.springframework.scheduling.quartz.CronTriggerBean;
 3
 4
 5 public class ×××Daemon {
 6
 7     /**
 8      * 调度工厂，可取得所属的触发器
 9      */
10     private Scheduler scheduler;
11
12     /**
13      * 任务1执行的方法
14      */
15     protected void executeInternal(){
16         // To do something
17     }
18
19     /**
20      * 重置定时时间任务的方法
21      */
22     public void resetJob()throws Exception{
23         String cronExpression = transformTime(×××);// 时间格式如：03:30 下午
24         CronTriggerBean trigger =  (CronTriggerBean)scheduler.getTrigger("×××JobTrigger",Scheduler.DEFAULT_GROUP);
25         String originConExpression = trigger.getCronExpression();
26         if(!originConExpression.equalsIgnoreCase(cronExpression)){
27             trigger.setCronExpression(cronExpression);
28             scheduler.rescheduleJob("×××JobTrigger", Scheduler.DEFAULT_GROUP, trigger);
29         }
30     }
31
32     /**
33      * 将时间转换为cron表达式
34      * @param time 时间字符串，格式如：03:30 下午
35      * @return
36      */
37     private String transformTime(String time){
38         StringBuffer result = new StringBuffer();
39         String[] arr = time.split(" ");
40         String[] timeArr = arr[0].split(":");
41         result.append("0 "+timeArr[1]+" ");
42         if("上午".equalsIgnoreCase(arr[1])){
43             result.append(Integer.valueOf(timeArr[0])%12);
44         }else{
45             result.append(12+Integer.valueOf(timeArr[0])%12);
46         }
47         result.append(" ? * *");
48         return result.toString();
49     }
50
51     public Scheduler getScheduler() {
52         return scheduler;
53     }
54     public void setScheduler(Scheduler scheduler) {
55         this.scheduler = scheduler;
56     }
57
58
59 }