<plug-in className="SchedulerPlugIn">
     <set-property property="startOnLoad" value="false" />
     <set-property property="startupDelay" value="0" />
  </plug-in>

public void init(ActionServlet actionServlet,
                 ModuleConfig moduleConfig) {

  System.out.println("Initializing Scheduler PlugIn for Jobs!");
  // Retrieve the ServletContext
// 获取ServletContext
  ServletContext ctx = actionServlet.getServletContext();
  // The Quartz Scheduler
  // Quartz Scheduler对象
  Scheduler scheduler = null;

  // Retrieve the factory from the ServletContext.
  // It will be put there by the Quartz Servlet
  // 从ServletContext取得由Quartz Servlet放置在此的factory对象。
  StdSchedulerFactory factory =  (StdSchedulerFactory) 
      ctx.getAttribute(QuartzInitializerServlet.QUARTZ_FACTORY_KEY);
    
  try{
        // Retrieve the scheduler from the factory
        // 从factory取得scheduler
        scheduler = factory.getScheduler();

        // Start the scheduler in case, it isn't started yet
        // 如果scheduler尚未启动，则启动它
        if (m_startOnLoad != null && 
            m_startOnLoad.equals(Boolean.TRUE.toString())){
            System.out.println("Scheduler Will start in " +
            m_startupDelayString + " milliseconds!");
            //wait the specified amount of time before
            // starting the process.
            // 在启动之前等待指定长度的时间
            Thread delayedScheduler =
                new Thread(new DelayedSchedulerStarted (
                                   scheduler, m_startupDelay));
            //give the scheduler a name. All good code needs a name
            //给任务调度器命名。好的代码总该有名字！
            delayedScheduler.setName("Delayed_Scheduler");
            //Start out scheduler
            //启动任务调度器
            delayedScheduler.start();
        }
  } catch (Exception e){
     e.printStackTrace();
  }
    sm_scheduler = scheduler;
}

  <servlet>

     <servlet-name>QuartzInitializer</servlet-name>
     <display-name>Quartz Initializer Servlet</display-name>

  <servlet-class>
    org.quartz.ee.servlet.QuartzInitializerServlet
  </servlet-class>
  <load-on-startup>1</load-on-startup>
  <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>false</param-value>
    </init-param>

 </servlet>

Trigger trigger = new CronTrigger("trigger1", "group1");
trigger.setCronExpression("0 0 15 ? * WED");

    JobDetail jobDetail =
        new JobDetail("Hello World Job",
                      "Hello World Group",
                      HelloWorld.class,
                      true, true, true);    
//Schedule The work
//调度这项任务
    SchedulerPlugIn.scheduleWork(scheduledJobDetail, trigger);

import org.quartz.JobDataMap;
import org.quartz.JobDetail;
import org.quartz.JobExecutionContext;

//extend the proper Quartz class
//继承适当的Quartz类
public class HelloWorld extends Job {

//override the execute method
//覆盖execute方法
    public void execute(JobExecutionContext context) {

// Every job has it's own job detail
//每个Job都有独立的JobDetail
    JobDetail jobDetail = context.getJobDetail();
// The name is defined in the job definition
//name在Job定义中指定
    String jobName = jobDetail.getName();
//Every job has a Job Data map for storing extra information
//每个Job都有一个Job Data map来存放额外的信息
    JobDataMap dataMap = jobDetail.getJobDataMap();
       
       System.out.println("Hello World!!!");
   }
 }

Trigger trigger = new SimpleTrigger("trigger1", "group1");
trigger.setRepeatCount(SimpleTrigger.REPEAT_INDEFINITELY);
trigger.setRepeatInterval(10000L); // milliseconds毫秒

Trigger trigger = TriggerUtils.makeDailyTrigger(2, 22);
trigger.setName("trigger1");
trigger.setGroup("group1");

Trigger trigger = new CronTrigger("trigger1", "group1");
trigger.setCronExpression("0 22 2 * * ?");

每5秒执行一次的触发器
/*  * 
 * 方法一：makeSecondlyTrigger
 * 注意以下代码将创建一个立即启动的触发器。要控制启动时间，使用
 * trigger.setStartTime(Date)方法。
 */
Trigger trigger = TriggerUtils.makeSecondlyTrigger(5);
trigger.setName("MyFiveSecondTrigger");
trigger.setGroup("MyTriggerGroup");

 /* 
 * 
 * 方法二：设置SimpleTrigger的重复次数和间隔时间。
 * 注意以下代码将创建一个立即启动的触发器。要控制启动时间，使用
 * trigger.setStartTime(Date)方法。
 */
Trigger trigger = new SimpleTrigger("trigger1", "group1");
trigger.setRepeatCount(SimpleTrigger.REPEAT_INDEFINITELY);
trigger.setRepeatInterval(5000L); // milliseconds

Trigger trigger = new SimpleTrigger("trigger1", "group1");
// 24 hours * 60(minutes per hour) *
// 60(seconds per minute) * 1000(milliseconds per second)
// 24小时 * 60（分钟每小时） * 60（秒每分钟）* 1000（毫秒每秒钟）
trigger.setRepeatInterval(24L * 60L * 60L * 1000L);

A cron expression is a string comprised of 6 or 7 fields separated by white space. Fields can contain any of the allowed values, along with various combinations of the allowed special characters for that field. The fields are as follows:

So cron expressions can be as simple as this: * * * * ? *
or more complex, like this: 0 0/5 14,18,3-39,52 ? JAN,MAR,SEP MON-FRI 2002-2010

Special characters

• * ("all values") - used to select all values within a field. For example, "*" in the minute field means "every minute".

• ? ("no specific value") - useful when you need to specify something in one of the two fields in which the character is allowed, but not the other. For example, if I want my trigger to fire on a particular day of the month (say, the 10th), but don't care what day of the week that happens to be, I would put "10" in the day-of-month field, and "?" in the day-of-week field. See the examples below for clarification.

• - - used to specify ranges. For example, "10-12" in the hour field means "the hours 10, 11 and 12".

• , - used to specify additional values. For example, "MON,WED,FRI" in the day-of-week field means "the days Monday, Wednesday, and Friday".

• / - used to specify increments. For example, "0/15" in the seconds field means "the seconds 0, 15, 30, and 45". And "5/15" in the seconds field means "the seconds 5, 20, 35, and 50". You can also specify '/' after the '*' character - in this case '*' is equivalent to having '0' before the '/'. '1/3' in the day-of-month field means "fire every 3 days starting on the first day of the month".

• L ("last") - has different meaning in each of the two fields in which it is allowed. For example, the value "L" in the day-of-month field means "the last day of the month" - day 31 for January, day 28 for February on non-leap years. If used in the day-of-week field by itself, it simply means "7" or "SAT". But if used in the day-of-week field after another value, it means "the last xxx day of the month" - for example "6L" means "the last friday of the month". When using the 'L' option, it is important not to specify lists, or ranges of values, as you'll get confusing results.

• W ("weekday") - used to specify the weekday (Monday-Friday) nearest the given day. As an example, if you were to specify "15W" as the value for the day-of-month field, the meaning is: "the nearest weekday to the 15th of the month". So if the 15th is a Saturday, the trigger will fire on Friday the 14th. If the 15th is a Sunday, the trigger will fire on Monday the 16th. If the 15th is a Tuesday, then it will fire on Tuesday the 15th. However if you specify "1W" as the value for day-of-month, and the 1st is a Saturday, the trigger will fire on Monday the 3rd, as it will not 'jump' over the boundary of a month's days. The 'W' character can only be specified when the day-of-month is a single day, not a range or list of days.

The 'L' and 'W' characters can also be combined in the day-of-month field to yield 'LW', which translates to "last weekday of the month".

• # - used to specify "the nth" XXX day of the month. For example, the value of "6#3" in the day-of-week field means "the third Friday of the month" (day 6 = Friday and "#3" = the 3rd one in the month). Other examples: "2#1" = the first Monday of the month and "4#5" = the fifth Wednesday of the month. Note that if you specify "#5" and there is not 5 of the given day-of-week in the month, then no firing will occur that month.

• C ("calendar") - this means values are calculated against the associated calendar, if any. If no calendar is associated, then it is equivalent to having an all-inclusive calendar. A value of "5C" in the day-of-month field means "the first day included by the calendar on or after the 5th". A value of "1C" in the day-of-week field means "the first day included by the calendar on or after Sunday".

The legal characters and the names of months and days of the week are not case sensitive. MON is the same as mon.

Examples

Here are some full examples:

Pay attention to the effects of '?' and '*' in the day-of-week and day-of-month fields!

import java.util.*;

import org.apache.commons.logging.*;
import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;

public class HelloworldJob implements Job{
 
 static Log log=LogFactory.getLog(HelloworldJob.class);
 public  HelloworldJob() {
  
 }
 public void execute(JobExecutionContext arg0) throws JobExecutionException {
  // TODO Auto-generated method stub
  log.info("Hello World Quartz......."+(new Date()).toLocaleString());
 }
}


quartz有自己的配置文个名为quartz.properties，如果我们不在src/（根目录）如果我们不建立文件那么quartz就会使用quartz.jar包里的这个的文件。该文件通常包含以下内容：

#
# 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 = 5000

org.quartz.jobStore.class = org.quartz.simpl.RAMJobStore

# ===========================================================================
# Configure SchedulerPlugins  ===============================================
# ===========================================================================
org.quartz.plugin.triggHistory.class = org.quartz.plugins.history.LoggingTriggerHistoryPlugin
org.quartz.plugin.triggHistory.triggerFiredMessage = Trigger {1}.{0} fired job {6}.{5} at: {4, date, HH:mm:ss MM/dd/yyyy}
org.quartz.plugin.triggHistory.triggerCompleteMessage = Trigger {1}.{0} completed firing job {6}.{5} at {4, date, HH:mm:ss MM/dd/yyyy} with resulting trigger instruction code: {9}

org.quartz.plugin.jobInitializer.class = org.quartz.plugins.xml.JobInitializationPlugin
org.quartz.plugin.jobInitializer.fileName = /quartz_job.xml
org.quartz.plugin.jobInitializer.overWriteExistingJobs = false
org.quartz.plugin.jobInitializer.failOnFileNotFound = true

org.quartz.plugin.shutdownhook.class = org.quartz.plugins.management.ShutdownHookPlugin
org.quartz.plugin.shutdownhook.cleanShutdown = true

以上配置quartz所需的配置，其中org.quartz.plugin.jobInitializer.fileName = /quartz_job.xml指定作业配置文件名，下面我是为HelloworldJob 写的一个配置，quartz_job.xml内容如下：
<?xml version="1.0" encoding="UTF-8"?>
<quartz>
  <job>
    <job-detail>
      <name>helloworld</name>
      <group>group1</group>
      <job-class>com.unicom.gdnum.jobs.HelloworldJob</job-class>
    </job-detail>
    <trigger>
      <cron>
        <name>test</name>
        <group>group1</group>
        <job-name>helloworld</job-name>
        <job-group>group1</job-group>
        <cron-expression>0 0/1 * * * ?</cron-expression>
     </cron>
    </trigger>
  </job>
</quartz>

这是在tomcat中作的一个例子，当然要使用quartz面要下载其相关包!