quartz定时器的使用
菜鸟的脚步 2013-03-23
1.下载Quartz，我下载的是1.8.5，将quartz-all-1.8.5拷贝到web项目的lib目录中。除此之外还需要将以下
jta-1.1
log4j-1.2.14
slf4j-api-1.6.1
slf4j-nop-1.5.2
slf4j-log4j12-1.6.1
commons-beanutils-1.7.0.jar
commons-collections-3.1.jar
commons-logging-1.0.4.jar
拷贝到web项目的lib目录中，不然会启动tomcat会产生如下错误：
#缺少log4j-1.2.14,slf4j-api-1.6.1,slf4j-log4j12-1.6.1
java.lang.NoClassDefFoundError:org/slf4j/LoggerFactory
#缺少jta-1.1
javax/transaction/UserTransactionatjava.lang.Class.getDeclaredMethods0(NativeMethod)
2.新建一个任务类,需要实现Quartz的Job接口。
packageme.hujun.demo.quartz;
importjava.util.Date;
importorg.quartz.Job;
importorg.quartz.JobExecutionContext;
importorg.quartz.JobExecutionException;
publicclassMyJobimplementsJob{
@Override
publicvoidexecute(JobExecutionContextarg0)throwsJobExecutionException{
System.out.println("StartMyJobat"+newDate());
}
}
3.在src目录下新建quartz.properties,这个文件可以直接充quartz的jar包中拷贝。但需要加入两行新的内容,分别用来指定jobInitializerclass和jobInitializer需要解析的配置文件路径（清单的最后两行配置）。
#============================================================================
#ConfigureMainSchedulerProperties
#============================================================================
org.quartz.scheduler.instanceName=TestScheduler
org.quartz.scheduler.instanceId=AUTO
#============================================================================
#ConfigureThreadPool
#============================================================================
org.quartz.threadPool.class=org.quartz.simpl.SimpleThreadPool
org.quartz.threadPool.threadCount=3
org.quartz.threadPool.threadPriority=5
#============================================================================
#ConfigureJobStore
#============================================================================
#org.quartz.jobStore.misfireThreshold=60000
org.quartz.jobStore.class=org.quartz.simpl.RAMJobStore
#============================================================================
#ConfigurePlugins
#============================================================================
#org.quartz.plugin.triggHistory.class=org.quartz.plugins.history.LoggingJobHistoryPlugin
#org.quartz.plugin.jobInitializer.class=org.quartz.plugins.xml.JobInitializationPlugin
#org.quartz.plugin.jobInitializer.fileNames=quartz_jobx.xml
#org.quartz.plugin.jobInitializer.overWriteExistingJobs=true
#org.quartz.plugin.jobInitializer.failOnFileNotFound=true
#org.quartz.plugin.jobInitializer.scanInterval=10
#org.quartz.plugin.jobInitializer.wrapInUserTransaction=false
#org.quartz.plugin.jobInitializer.class=org.quartz.plugins.xml.JobInitializationPlugin
org.quartz.plugin.jobInitializer.class=org.quartz.plugins.xml.XMLSchedulingDataProcessorPlugin
org.quartz.plugin.jobInitializer.fileNames=quartz_jobs.xml
org.quartz.plugin.jobInitializer.failOnFileNotFound=true
org.quartz.plugin.shutdownhook.class=org.quartz.plugins.management.ShutdownHookPlugin
org.quartz.plugin.shutdownhook.cleanShutdown=true
4.编写quartz_job.xml（上述清单中org.quartz.plugin.jobInitializer.fileNames的值），配置job和trigger。
<?xmlversion="1.0"encoding="UTF-8"?>
<job-scheduling-dataxmlns="http://www.quartz-scheduler.org/xml/JobSchedulingData"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.quartz-scheduler.org/xml/JobSchedulingDatahttp://www.quartz-scheduler.org/xml/job_scheduling_data_1_8.xsd"
version="1.8">
<schedule>
<job>
<name>my_job</name>
<group>DEFAULT</group>
<description>
thisisHelloWorld......
</description>
<job-class>org.hzy.jobs.My_Job</job-class>
</job>
<trigger>
<cron>
<name>my_job_trigger</name>
<job-name>my_job</job-name>
<cron-expression>0/10****?</cron-expression>
</cron>
</trigger>
</schedule>
</job-scheduling-data>
5.修改web.xml。
<servlet>
<servlet-name>quartz</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>
<init-param>
<param-name>start-scheduler-on-load</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
或启用监听器QuartzInitializerListener
<context-param>
<param-name>config-file</param-name>
<param-value>/some/path/my_quartz.properties</param-value>
</context-param>
<context-param>
<param-name>shutdown-on-unload</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>start-scheduler-on-load</param-name>
<param-value>true</param-value>
</context-param>
<listener>
<listener-class>
org.quartz.ee.servlet.QuartzInitializerListener
</listener-class>
</listener>
6.启动tomcat
