Quartz集群配置

先看看quartz的持久化基本介绍： 

引用

1 大家都清楚quartz最基本的概念就是job，在job内调用具体service完成具体功能，quartz需要把每个job存储起来，方便调度，quartz存储job方式就分三种，我们最常用的也是quartz默认的是RAMJobStore，RAMJobStore顾名思义就是把job的相关信息存储在内存里，如果用spring配置quartz的job信息的话，所有信息是配置在xml里，当spirng context启动的时候就把xml里的job信息装入内存。这一性质就决定了一旦JVM挂掉或者容器挂掉，内存中的job信息就随之消失，无法持久化。另外两种方式是JobStoreTX和JobStoreCMT，暂时不讨论这两者的区别，使用这两种JobStore，quartz就会通过jdbc直连或者应用服务器jndi连接数据库，读取配置在数据库里的job初始化信息，并且把job通过java序列化到数据库里，这样就使得每个job信息得到了持久化，即使在jvm或者容器挂掉的情况下，也能通过数据库感知到其他job的状态和信息。 
    2 quartz集群各节点之间是通过同一个数据库实例(准确的说是同一个数据库实例的同一套表)来感知彼此的。 

由上可见，我们需要创建quartz要用的数据库表，此sql文件在：quartz-1.8.6docsdbTables。此文件夹下有各个数据库的sql文件，mysql选择tables_mysql.sql。创建相应表。 

接下来新建quartz.properties来覆盖jar包中的此文件，新的properties文件放在src的根目录下即可。下面是文件内容： 

Java代码 

#==============================================================    
#Configure Main Scheduler Properties    
#==============================================================     
org.quartz.scheduler.instanceName = quartzScheduler  
org.quartz.scheduler.instanceId = AUTO  
  
#==============================================================    
#Configure JobStore    
#==============================================================   
org.quartz.jobStore.class = org.quartz.impl.jdbcjobstore.JobStoreTX  
org.quartz.jobStore.driverDelegateClass = org.quartz.impl.jdbcjobstore.StdJDBCDelegate  
org.quartz.jobStore.tablePrefix = QRTZ_  
org.quartz.jobStore.isClustered = true  
org.quartz.jobStore.clusterCheckinInterval = 20000    
org.quartz.jobStore.dataSource = myDS  
   
#==============================================================    
#Configure DataSource    
#==============================================================   
org.quartz.dataSource.myDS.driver = com.mysql.jdbc.Driver  
org.quartz.dataSource.myDS.URL = jdbc:mysql://192.168.20.195:3306/database?useUnicode=true&characterEncoding=UTF-8  
org.quartz.dataSource.myDS.user = root  
org.quartz.dataSource.myDS.password = 123456  
org.quartz.dataSource.myDS.maxConnections = 30  
  
#==============================================================    
#Configure ThreadPool    
#==============================================================   
org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPool  
org.quartz.threadPool.threadCount = 10  
org.quartz.threadPool.threadPriority = 5  
org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread = true  

可以看到除了数据源、线程池等配置外，我们指定了一个scheduler实例，实例ID为自动分配。 

#==============================================================
#Configure Main Scheduler Properties
#==============================================================
org.quartz.scheduler.instanceName = quartzScheduler
org.quartz.scheduler.instanceId = AUTO

此外，指定了集群相应配置，检查间隔为20s： 

Java代码 

org.quartz.jobStore.isClustered = true  
org.quartz.jobStore.clusterCheckinInterval = 20000   

 

最后配置applicant-context.xml文件。这里特别要注意一点： 

引用

MethodInvokingJobDetailFactoryBean 类中的 methodInvoking 方法，是不支持序列化的，因此在把 QUARTZ 的 TASK 序列化进入数据库时就会抛错。

所以我们要自己实现MethodInvokingJobDetailFactoryBean 的功能，这里用MyDetailQuartzJobBean 替换。 

Java代码 

import java.lang.reflect.Method;  
  
import org.apache.commons.logging.Log;  
import org.apache.commons.logging.LogFactory;  
import org.quartz.JobExecutionContext;  
import org.quartz.JobExecutionException;  
import org.springframework.context.ApplicationContext;  
import org.springframework.scheduling.quartz.QuartzJobBean;  
  
public class MyDetailQuartzJobBean extends QuartzJobBean {  
    protected final Log logger = LogFactory.getLog(getClass());  
    private String targetObject;  
    private String targetMethod;  
    private ApplicationContext ctx;  
  
    @Override  
    protected void executeInternal(JobExecutionContext context)  
            throws JobExecutionException {  
        try {  
            logger.info("execute [" + targetObject + "] at once>>>>>>");  
            Object otargetObject = ctx.getBean(targetObject);  
            Method m = null;  
  
            try {  
                m = otargetObject.getClass().getMethod(targetMethod, new Class[] {JobExecutionContext.class});  
                m.invoke(otargetObject, new Object[] {context});  
            } catch (SecurityException e) {  
                logger.error(e);  
            } catch (NoSuchMethodException e) {  
                logger.error(e);  
            }  
        } catch (Exception e) {  
            throw new JobExecutionException(e);  
        }  
    }  
  
    public void setApplicationContext(ApplicationContext applicationContext) {  
        this.ctx = applicationContext;  
    }  
  
    public void setTargetObject(String targetObject) {  
        this.targetObject = targetObject;  
    }  
  
    public void setTargetMethod(String targetMethod) {  
        this.targetMethod = targetMethod;  
    } 

终于到配置spring文件这步了 

Java代码 

<bean id="mapScheduler" lazy-init="false" autowire="no"  
        class="org.springframework.scheduling.quartz.SchedulerFactoryBean">  
        <property name="triggers">  
            <list>  
                <ref bean="dailyTrigger" />  
                <ref bean="billCountTrigger" />  
                <ref bean="userAcctTrigger" />  
            </list>  
        </property>  
        <property name="applicationContextSchedulerContextKey" value="applicationContext" />  
        <property name="configLocation" value="classpath:quartz.properties" />  
    </bean>  
  
  
    <bean id="dailyBillJob" class="com.***.job.DailyBillJob" />  
  
    <bean id="dailyBillJobDetail" class="org.springframework.scheduling.quartz.JobDetailBean">  
        <property name="jobClass">  
            <value>com.autelan.auteview.lib.util.MyDetailQuartzJobBean  
            </value>  
        </property>  
        <property name="jobDataAsMap">  
            <map>  
                <entry key="targetObject" value="dailyBillJob" />  
                <entry key="targetMethod" value="execute" />  
            </map>  
        </property>  
    </bean>  
  
    <bean id="dailyTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean">  
        <property name="jobDetail">  
            <ref bean="dailyBillJobDetail" />  
        </property>  
        <property name="cronExpression">  
            <value>11 11 11 * * ?</value>  
        </property>  
    </bean> 

  

大功告成！