困扰好久了,spring quartz一个问题,job无法得到spring注入的属性bean,请CSDN年XDJM看一下,帮忙看一下,给分不是问题,万分感谢
本帖最后由 comeonchinagoogle 于 2012-08-10 10:53:31 编辑 事情是这样的,动态启动多个任务去发送消息,这个任务我是从数据库里获取,各个任务的启动是同一个JOB,只是每个任务JOB传入的参数不同,但这个JOB,需要一个spring 的dao,得不到spring注入的dao属性,不知道怎么回事
1.spring配置dao
--application*.xml--
<bean id="sendMsg" class="com.test.SendMsg">
<property name="msgDao"><ref bean="msgDao"/></property>
</bean>
....msgDao已经配好数据源 spring
2.启任务
1)public calss TestInit(){
//get tasklist
public void initJobTrigger() throws Exception
{
List list=getTasklist();
if(null!=list&&list.size()>0){
Iterator ite=list.iterator();//这个可以得到dao
while(ite.hasNext()){
Tmsg msg=(Tmsg)ite.next();
JobDetail jobdetail=new JobDetail("msgJob_"+msg.getId(),Scheduler.DEFAULT_GROUP,SendMsg.class);
SimpleTrigger sm=new SimpleTrigger("trigger_"+msg.getId(),Scheduler.DEFAULT_GROUP,new Date(),null,SimpleTrigger.REPEAT_INDEFINITELY,60L*10000L);
try{
scheduler.schedulerJob(jobDetail,sm);
}catch(Exception ex){
}
scheduler.unscheduleJob("InitTrigger",Scheduler.DEFAULT_GROUP);//初始化任务只执行一行,执行一次之后移除初始化触发器
scheduler.start();
}
}
}
public class SendMsg implements Job
{
private MsgDao msgDao;
//msgDao get,set方法,略
...
public void execute(JobExecutionContext je) throws JobExecutionException{
......略
List list=msgDao.getNeedMsg() ;//问题出在这里没法获得 msgDao
.....do sth.
}
}
现在主要出现两个问题:
1.实现的job没法得到spring已经注入的dao,出现空指针,先前第一次初始化任务可以得到dao,但是动态生成任务,实现job,无法得到spring注入的属性dao,这是什么原因,请各位XDJM看有什么办法,困扰好久了...万分感谢...
2..多任务创建存在job和group id已经存在的错误,因为这些id是从数据库获取
[解决办法]
你读取spring配置文件啦吗？ApplicationContext……
[解决办法]
<property name="schedulerContextAsMap">
<map>
<!-- spring 管理的service需要放到这里，才能够注入成功 -->
<description>schedulerContextAsMap</description>
<entry key="xxService或xxRepo" value-ref="xxService或xxRepo" />
</map>
</property>
[解决办法]
<!-- 定时执行任务的类，要继承TimerTask -->
<!-- <bean id ="SmsSendTask" class ="com.aisino.platform.sms.core.SmsSendTask" /> -->
<!-- 用Spring管理这个TimerTask，设定触发间隔 -->
<!--
<bean id ="ScheduledUserTimerTask" class ="org.springframework.scheduling.timer.ScheduledTimerTask" >
<property name ="delay" >
<value > 10000 </value >
</property >
<property name ="period" >
<value > 60000 </value >
</property >
<property name ="timerTask" >
<ref local ="SmsSendTask" />
</property >
</bean >
-->
<!--
<bean id ="SmsQuickQueueSendTask" class ="com.aisino.platform.sms.queue.SmsQuickQueueSendTask" />
<bean id ="ScheduledQuickTimerTask" class ="org.springframework.scheduling.timer.ScheduledTimerTask" >
<property name ="delay" >
<value >30000</value>
</property >
<property name ="period" >
<value >60000</value >
</property >
<property name ="timerTask" >
<ref local ="SmsQuickQueueSendTask" />
</property >
</bean >
<bean id ="timerFactory" class ="org.springframework.scheduling.timer.TimerFactoryBean" >
<property name ="scheduledTimerTasks" >
<list >
<ref local ="ScheduledQuickTimerTask" />
</list >
</property >
</bean >
<bean id="sendMsgJobDetail" class="org.springframework.scheduling.quartz.JobDetailBean">
<property name="jobClass">
<value>com.youcom.job.SendMsg</value>
</property>
<property name="jobDataAsMap">
<map>
<entry key="msgDao"><ref bean="msgDao"/></entry>
</map>
</property>
</bean>
