Quartz(二）在Spring中动态启动，暂定，添加，删除定时功能
动态启动，暂定，添加，删除定时功能，可传参数
Spring中使用Quartz的3种方法（MethodInvokingJobDetailFactoryBean,implements Job,extends QuartzJobBean）
以下介绍一下实现job接口的方法，通过此方法可以动态启动，暂定，添加，删除定时功能，可传参数。
所有数据全部持久化到数据表中，不再需要XML配置文件存储数据。quartz已经封装了持久化方法。数据表用的MYSQL见附件
配置quartz. properties
Java代码
#============================================================================
# Configure Main Scheduler Properties
#============================================================================
org.quartz.scheduler.instanceName = TestScheduler
org.quartz.scheduler.instanceId = AUTO
#============================================================================
# Configure ThreadPool
#============================================================================
org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPool
org.quartz.threadPool.threadCount = 5
org.quartz.threadPool.threadPriority = 4
#============================================================================
# Configure JobStore
#============================================================================
org.quartz.jobStore.misfireThreshold = 60000
#org.quartz.jobStore.class = org.quartz.simpl.RAMJobStore
org.quartz.jobStore.class = org.quartz.impl.jdbcjobstore.JobStoreTX
##org.quartz.jobStore.driverDelegateClass = org.quartz.impl.jdbcjobstore.oracle.OracleDelegate
#org.quartz.jobStore.driverDelegateClass = org.quartz.impl.jdbcjobstore.PostgreSQLDelegate
org.quartz.jobStore.dataSource = myDS
org.quartz.jobStore.tablePrefix = QRTZ_
org.quartz.jobStore.isClustered = false
#============================================================================
# Configure Datasources
#============================================================================
org.quartz.dataSource.myDS.driver = com.mysql.jdbc.Driver
org.quartz.dataSource.myDS.URL = jdbc:mysql://localhost:3306/quartz?useUnicode=true&characterEncoding=utf8
org.quartz.dataSource.myDS.user = root
org.quartz.dataSource.myDS.password =
org.quartz.dataSource.myDS.maxConnections = 5
#org.quartz.dataSource.myDS.driver = org.postgresql.Driver
#org.quartz.dataSource.myDS.URL = jdbc:postgresql:dev
#org.quartz.dataSource.myDS.user = jhouse
#org.quartz.dataSource.myDS.password =
#org.quartz.dataSource.myDS.maxConnections = 5
#============================================================================
# Configure Plugins
#============================================================================
org.quartz.plugin.triggHistory.class = org.quartz.plugins.history.LoggingJobHistoryPlugin
#org.quartz.plugin.jobInitializer.class = org.quartz.plugins.xml.JobInitializationPlugin
# init plugin will load jobs.xml as a classpath resource i.e. /jobs.xml if not found on file system
#org.quartz.plugin.jobInitializer.fileName=jobs.xml
#org.quartz.plugin.jobInitializer.overWriteExistingJobs = false
#org.quartz.plugin.jobInitializer.failOnFileNotFound = false
#============================================================================
# Configure Main Scheduler Properties
#============================================================================
org.quartz.scheduler.instanceName = TestScheduler
org.quartz.scheduler.instanceId = AUTO
#============================================================================
# Configure ThreadPool
#============================================================================
org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPool
org.quartz.threadPool.threadCount = 5
org.quartz.threadPool.threadPriority = 4
#============================================================================
# Configure JobStore
#============================================================================
org.quartz.jobStore.misfireThreshold = 60000
#org.quartz.jobStore.class = org.quartz.simpl.RAMJobStore
org.quartz.jobStore.class = org.quartz.impl.jdbcjobstore.JobStoreTX
##org.quartz.jobStore.driverDelegateClass = org.quartz.impl.jdbcjobstore.oracle.OracleDelegate
#org.quartz.jobStore.driverDelegateClass = org.quartz.impl.jdbcjobstore.PostgreSQLDelegate
org.quartz.jobStore.dataSource = myDS
org.quartz.jobStore.tablePrefix = QRTZ_
org.quartz.jobStore.isClustered = false
#============================================================================
# Configure Datasources
#============================================================================
org.quartz.dataSource.myDS.driver = com.mysql.jdbc.Driver
org.quartz.dataSource.myDS.URL = jdbc:mysql://localhost:3306/quartz?useUnicode=true&characterEncoding=utf8
org.quartz.dataSource.myDS.user = root
org.quartz.dataSource.myDS.password =
org.quartz.dataSource.myDS.maxConnections = 5
#org.quartz.dataSource.myDS.driver = org.postgresql.Driver
#org.quartz.dataSource.myDS.URL = jdbc:postgresql:dev
#org.quartz.dataSource.myDS.user = jhouse
#org.quartz.dataSource.myDS.password =
#org.quartz.dataSource.myDS.maxConnections = 5
#============================================================================
# Configure Plugins
#============================================================================
org.quartz.plugin.triggHistory.class = org.quartz.plugins.history.LoggingJobHistoryPlugin
#org.quartz.plugin.jobInitializer.class = org.quartz.plugins.xml.JobInitializationPlugin
# init plugin will load jobs.xml as a classpath resource i.e. /jobs.xml if not found on file system
#org.quartz.plugin.jobInitializer.fileName=jobs.xml
#org.quartz.plugin.jobInitializer.overWriteExistingJobs = false
#org.quartz.plugin.jobInitializer.failOnFileNotFound = false
在这里采用JobStoreTX，将任务持久化到数据中，而不再是简单的内存方式：RAMJobStore
在XML里加入：
在web.xml中添加QuartzInitializerServlet，Quartz为能够在web应用中使用，提供了一个QuartzInitializerServlet和一个QuartzInitializerListener，用于在加载web应用时，对quartz进行初始化。
Xml代码
<servlet>
<servlet-name>
QuartzInitializer
</servlet-name>
<servlet-class>
org.quartz.ee.servlet.QuartzInitializerServlet
</servlet-class>
<init-param>
<param-name>config-file</param-name>
<param-value>/quartz.properties</param-value>
</init-param>
<init-param>
<param-name>shutdown-on-unload</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<servlet-name>
QuartzInitializer
</servlet-name>
<servlet-class>
org.quartz.ee.servlet.QuartzInitializerServlet
</servlet-class>
<init-param>
<param-name>config-file</param-name>
<param-value>/quartz.properties</param-value>
</init-param>
<init-param>
<param-name>shutdown-on-unload</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
Java代码
public interface TimerService
{
public void setJobName(String jobName);
public void setJobGroup(String jobGroup);
public void setClassName(String string);
public void setCronExpression(String cronExpression);
public void setParameterNames(String[] strings);
public void setParameterValues(String[] strings);
/**
* 设置定时时间
* @param request
* @param jobName
* @param jobGroup
* @param triggerName
* @param triggerGroup
* @param cronExpression
*/
void saveCron(HttpServletRequest request,String jobName,String jobGroup,String triggerName,String triggerGroup,String cronExpression) throws SchedulerException, ParseException;
/**
* 删除定时器
* @param request
* @param jobName
* @param jobGroup
*/
void deleteTimer(HttpServletRequest request,String jobName,String jobGroup) throws SchedulerException;
/**
* 立即执行定时功能
* @param request
* @param jobName
* @param jobGroup
*/
void runNowTimer(HttpServletRequest request,String jobName,String jobGroup) throws SchedulerException;
/**
* 根据名称和组别暂停Tigger
* @param triggerName
* @param group
*/
void pauseTrigger(HttpServletRequest request,String triggerName,String group) throws SchedulerException;
/**
* 恢复Trigger
* @param triggerName
* @param group
*/
void resumeTrigger(HttpServletRequest request,String triggerName,String group) throws SchedulerException;
/**
* 删除Trigger
* @param triggerName
* @param group
*/
boolean removeTrigdger(HttpServletRequest request,String triggerName,String group) throws SchedulerException;
}
public class TimerServiceImpl implements TimerService
{
private ApplicationContext appCtx = null;
private Scheduler scheduler;
private String jobName = "";
private String jobGroup ="";
private String className = "";
private String cronExpression = "";
private String parameterNames[] = {};
private String parameterValues[] = {};
private JobDetail jobDetail = new JobDetail();
public String getJobName() {
return jobName;
}
public void setJobName(String jobName) {
this.jobName = jobName;
}
public String getJobGroup() {
return jobGroup;
}
public void setJobGroup(String jobGroup) {
this.jobGroup = jobGroup;
}
public String getClassName() {
return className;
}
public void setClassName(String string) {
className = string.trim();
}
public String getCronExpression() {
return cronExpression;
}
public void setCronExpression(String cronExpression) {
this.cronExpression = cronExpression;
}
public JobDetail getJobDetail() {
return jobDetail;
}
public void setJobDetail(JobDetail detail) {
jobDetail = detail;
}
public String[] getParameterNames() {
return parameterNames;
}
public String[] getParameterValues() {
return parameterValues;
}
public void setParameterNames(String[] strings) {
parameterNames = strings;
}
public void setParameterValues(String[] strings) {
parameterValues = strings;
}
public void saveTimer(HttpServletRequest request, String[] parameterNames,String[] parameterValues,JobDetail jobDetail)
throws SchedulerException, ClassNotFoundException
{
className = jobDetail.getJobClass().getName();
Class jobClass = Class.forName(className);
jobDetail.setJobClass(jobClass);
for (int i =0; i < parameterNames.length; i++) {
if (parameterNames[i].trim().length() > 0 && parameterValues[i].trim().length() > 0) {
jobDetail.getJobDataMap().put(parameterNames[i].trim(), parameterValues[i].trim());
jobDetail.getJobDataMap().put(parameterNames[i].trim(), parameterValues[i].trim());
}
}
boolean replace = true;
scheduler = ScheduleBase.getCurrentScheduler(request);
scheduler.addJob(jobDetail, replace);
}
public void saveCron(HttpServletRequest request, String jobName, String jobGroup, String triggerName
, String triggerGroup, String cronExpression) throws SchedulerException, ParseException
{
CronTrigger trigger = null;
if (cronExpression.length() > 2) {
trigger = new CronTrigger(triggerName,triggerGroup,jobName,jobGroup,cronExpression);
}
trigger.setVolatility(false);
scheduler = ScheduleBase.getCurrentScheduler(request);
scheduler.scheduleJob(trigger);
}
public void deleteTimer(HttpServletRequest request, String jobName,String jobGroup) throws SchedulerException
{
this.jobDetail = scheduler.getJobDetail(jobName, jobGroup);
if(this.jobDetail!=null){
scheduler = ScheduleBase.getCurrentScheduler(request);
scheduler.deleteJob(jobName, "DEFAULT");
}
}
public void runNowTimer(HttpServletRequest request, String jobName,String jobGroup) throws SchedulerException
{
scheduler = ScheduleBase.getCurrentScheduler(request);
scheduler.triggerJob(jobName, jobGroup);
}
public void pauseTrigger(HttpServletRequest request, String triggerName,String group) throws SchedulerException
{
scheduler = ScheduleBase.getCurrentScheduler(request);
scheduler.pauseTrigger(triggerName, group);//停止触发器
}
public void resumeTrigger(HttpServletRequest request, String triggerName,String group) throws SchedulerException
{
scheduler = ScheduleBase.getCurrentScheduler(request);
//Trigger trigger = scheduler.getTrigger(triggerName, group);
scheduler.resumeTrigger(triggerName, group);//重启触发器
}
public boolean removeTrigdger(HttpServletRequest request, String triggerName,String group) throws SchedulerException
{
scheduler = ScheduleBase.getCurrentScheduler(request);
scheduler.pauseTrigger(triggerName, group);//停止触发器
return scheduler.unscheduleJob(triggerName, group);//移除触发器
}
public void timerDataJob(JobExecutionContext context)
{
}
}
//实现job接口才能定时运行
public class TimerDataJob implements Job
{
private ApplicationContext appCtx = null;
private TimerService timerService = null;
public void execute(JobExecutionContext context)
throws JobExecutionException
{
try {
Map parameters=context.getJobDetail().getJobDataMap();
String str = (String)parameters.get("");//通过此方法获得需要的参数
appCtx = ApplicationContextKeeper.getAppCtx();//servlet类，项目启动时讲配置文件读入
timerService = (TimerService)appCtx.getBean("timerService");
System.out.println("----------定时结束-----------");
} catch (Exception e) {
e.printStackTrace();
}
}
}