Quartz与Spring整合进行热部署的实现（二）

Spring的org.springframework.scheduling.quartz.JobDetailBean提供Job可序列化的实现(具体实现可查看源码)

此时.我们原来的job就可以继承QuartzJobBean,便会自动序列化到数据库,quartz的具体配置文件如下

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:jee="http://www.springframework.org/schema/jee"
    xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd"
    default-lazy-init="true">

    <description>quartz配置</description>

    <!-- quartz使用的数据源配置 -->
    <bean id="quartzDataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="${quartz.jdbc.driver}" />
        <property name="url" value="${quartz.jdbc.url}" />
        <property name="username" value="${quartz.jdbc.username}" />
        <property name="password" value="${quartz.jdbc.password}" />
    </bean>

    <!-- 另一个事务管理器, Jdbc单数据源事务 -->
    <bean id="quartzTransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="quartzDataSource" />
    </bean>

    <bean name="quartzScheduler" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
        <property name="dataSource" ref="quartzDataSource"/>
        <property name="applicationContextSchedulerContextKey" value="applicationContext"/>
        <property name="configLocation" value="classpath:quartz.properties"/><!--
        这个是必须的，QuartzScheduler 延时启动，应用启动完后 QuartzScheduler 再启动
        -->
        <property name="startupDelay" value="30"/><!--
        这个是可选，QuartzScheduler 启动时更新己存在的Job，这样就不用每次修改targetObject后删除qrtz_job_details表对应记录了
        -->
        <property name="overwriteExistingJobs" value="true"/>
        <property name="jobDetails" >
            <list>
                <ref bean="serverHealthJobDetail"/>
            </list>
        </property>
    </bean>

    <!-- 运行次数记录 -->
    <bean id="serverHealthJobDetail" class="org.springframework.scheduling.quartz.JobDetailBean">
        <!--requestsRecovery属性为true，则当Quartz服务被中止后，再次启动任务时会尝试恢复执行之前未完成的所有任务-->
        <property name="requestsRecovery" value="true"/>
        <!-- 标识job是持久的,删除触发器的时候不被删除 -->
        <property name="durability" value="true"/>
        <property name="jobClass" value="cn.yzzn.hvac.quartz.job.ServerHealthJob"/>
    </bean>

</beans>

我们看到<property name="applicationContextSchedulerContextKey" value="applicationContext"/>此标签

Spring会帮我们自动注入applicationContext.并非上一篇文章中,通过Spring的工具手动获取applicationContext.

ServerHealthJob代码如下

public abstract class JobSupport extends QuartzJobBean {

    private BuildingManager buildingManager;
    private PlcManager plcManager;

    private static Logger logger = LoggerFactory.getLogger(JobSupport.class);

    private ApplicationContext applicationContext;
    /**
     * 从SchedulerFactoryBean注入的applicationContext.
     */
    public void setApplicationContext(ApplicationContext applicationContext) {
        this.applicationContext = applicationContext;
    }

    public <T> T getBean(String beanName, Class<T> clazz) {
        return this.applicationContext.getBean(beanName, clazz);
    }

    @Override
    protected void executeInternal(JobExecutionContext context)
            throws JobExecutionException {
        if (ObjectUtils.isNullOrEmptyString(buildingManager)) {
            buildingManager = getBean("buildingManager", BuildingManager.class);
        }
        if (ObjectUtils.isNullOrEmptyString(plcManager)) {
            plcManager = getBean("plcManager", PlcManager.class);
        }

        List<Building> buildingList = buildingManager.getBuildings();

        int size = buildingList.size();
        for (int i = 0; i < size; i++) {
            Building building = buildingList.get(i);

            Set<Plc> plcSet = building.getPlcs();
            for (Plc plc : plcSet) {
                innerIter(building, plc, i, size);
            }
        }
    }

    public abstract void innerIter(Building building, Plc plc,
            int index, int size);

}
public class ServerHealthJob extends JobSupport {

    @Override
    public void innerIter(Building building, Plc plc, int index, int size) {
        // TODO Auto-generated method stub

    }

}

ServerHealthJob就可以被Spring轻松的序列化到数据库.解决了上篇博文中繁琐的操作.

JobSupport是本人系统业务需求,同学们可自定义实现只要继承QuartzJobBean即刻.

数据库中已存在次jobDetail

TriggerManager也没多大变化

/**
 * Quartz Scheduler 管理类
 * 不带groupName参数的方法都采用自动填充默认组的形式 Scheduler.DEFAULT_GROUP
 * @author PigWing
 *
 */
public class SchedulerManagerImpl implements SchedulerManager {

    private QuartzDao quartzDao;
    private Scheduler scheduler;

    private static Logger logger = LoggerFactory.getLogger(UserController.class);

    /***
     * 增加一个触发器任务,采用默认组形式
     */
    public void addTrigger(String triggerName, String jobName,
            String cronExpression) throws SchedulerException, ParseException {
        addTrigger(triggerName, Scheduler.DEFAULT_GROUP, jobName, Scheduler.DEFAULT_GROUP, cronExpression);
    }

    /**
     *
     * 增加一个触发器任务
     */
    public void addTrigger(String triggerName, String triggerGroupName,
            String jobName, String jobGrourpName, String cronExpression) throws SchedulerException, ParseException {
        if(StringUtils.isEmpty(triggerName)) {
            throw new RuntimeException("triggerName can not be null");
        }

        try {
            JobDetail jobDetail = scheduler.getJobDetail(jobName, jobGrourpName);
            if(jobDetail != null) {
                scheduler.addJob(jobDetail, true);
                CronTrigger cronTrigger = new CronTrigger(triggerName, triggerGroupName, jobDetail.getName(), jobGrourpName);
                cronTrigger.setCronExpression(cronExpression);
                scheduler.scheduleJob(cronTrigger);
                scheduler.rescheduleJob(cronTrigger.getName(), cronTrigger.getGroup(), cronTrigger);
            }else {
                logger.error("cant not find jobDetail: " + jobGrourpName);
            }
        }catch(SchedulerException e) {
            logger.error(e.getMessage());
            throw e;
        }
    }

    /**
     * 返回所有触发器信息
     */
    public List<Map<String, Object>> getAllTriggers() {
        return quartzDao.getQuartzTriggers();
    }

    /**
     * 停止触发器
     */
    public void parseTrigger(String triggerName, String groupName)
            throws SchedulerException {
        try {
            scheduler.pauseTrigger(triggerName, groupName);
        }catch(SchedulerException e) {
            logger.error(e.getMessage());
            throw e;
        }

    }

    /**
     * 停止触发器,采用默认组形式
     */
    public void parseTrigger(String triggerName) throws SchedulerException {
        parseTrigger(triggerName, Scheduler.DEFAULT_GROUP);

    }

    /**
     * 重启触发器
     */
    public void resumeTrigger(String triggerName, String groupName)
            throws SchedulerException {
        try {
            scheduler.resumeTrigger(triggerName, groupName);
        }catch(SchedulerException e) {
            logger.error(e.getMessage());
            throw e;
        }

    }

    /**
     * 重启触发器,采用默认组形式
     */
    public void resumeTrigger(String triggerName) throws SchedulerException {
        resumeTrigger(triggerName, Scheduler.DEFAULT_GROUP);
    }

    /**
     * 移除触发器
     */
    public boolean removeTrigger(String triggerName, String groupName)
            throws SchedulerException {
        try {
            parseTrigger(triggerName, groupName);
            return scheduler.unscheduleJob(triggerName, groupName);
        }catch(SchedulerException e) {
            logger.error(e.getMessage());
            throw e;
        }
    }

    /**
     * 移除触发器,采用默认组形式
     */
    public boolean removeTrigger(String triggerName) throws SchedulerException {
        try {
            return removeTrigger(triggerName, Scheduler.DEFAULT_GROUP);
        }catch(SchedulerException e) {
            logger.error(e.getMessage());
            throw e;
        }
    }

    /**
     * 返回所有的任务名称
     */
    public String[] getJobNames(String groupName) throws SchedulerException {
        return scheduler.getJobNames(groupName);
    }

    public String[] getJobNames() throws SchedulerException {
        return scheduler.getJobNames(Scheduler.DEFAULT_GROUP);
    }

    @Autowired
    public void setQuartzDao(QuartzDao quartzDao) {
        this.quartzDao = quartzDao;
    }

    @Autowired
    public void setScheduler(Scheduler scheduler) {
        this.scheduler = scheduler;
    }

}

本文转自：http://www.cnblogs.com/pigwing/archive/2011/07/12/2104002.html