quartz 是著名的 opensymphony 的一個項目，是一個全能型的調度系統，可以在j2ee中使用，也可以獨立運行。
quartz的網站上的文檔寫的比較清晰明瞭，入門很容易，不過要使用其全部功能估計還是要費點功夫。
quartz支持插件型功能擴展，使用者可以自己編寫適合的插件。
下面是一個入門的例子：
1.要求：定義兩個工作，設定這兩個工作的運行時間和間隔時間，這兩個工作使用數據庫作爲持久化，運行後會發送email到指定地址。
2.quartz 的配置：
配置quartz只需要配置一個文件：quartz.properties。此文件的原型在 quartz-1.4.5/docs/config 目錄下面，將example_quartz.properties拷貝到java源文件目錄並改名爲quartz.properties。
quartz的配置主要選項：
數據庫配置：
org.quartz.jobStore.class = org.quartz.impl.jdbcjobstore.JobStoreTX
org.quartz.jobStore.driverDelegateClass = org.quartz.impl.jdbcjobstore.MSSQLDelegate
org.quartz.jobStore.useProperties = false
org.quartz.jobStore.dataSource = myDS
org.quartz.jobStore.tablePrefix = QRTZ_
org.quartz.jobStore.isClustered = false
org.quartz.dataSource.myDS.driver = com.microsoft.jdbc.sqlserver.SQLServerDriver
org.quartz.dataSource.myDS.URL = jdbc:microsoft:sqlserver://hr:1433;SelectMethod=cursor
org.quartz.dataSource.myDS.user = hradmin
org.quartz.dataSource.myDS.password = admin
org.quartz.dataSource.myDS.maxConnections = 10
這是mssql數據庫的配置，其他數據庫請配置適合的org.quartz.jobStore.driverDelegateClass名稱。
這裏配置的數據源名稱爲 myDS 。這唯一標誌了這個數據連接。將在取得數據庫連接的時候使用到。
org.quartz.plugin.jobInitializer.fileName = data/my_job_data.xml
這裏指定的初始化文件名稱必須具有此文件，否則quartz不能運行。這裏建立了一個空文件。
quartz的數據庫腳本放在 quartz-1.4.5/docs/dbTables 目錄，支持常用的數據庫。
3.調度主類：
com.demo.job;主類中有倆個工作加入調度隊列：SampleJob 和SecondJob
java.util.Date;
org.apache.commons.logging.Log;
org.apache.commons.logging.LogFactory;
org.quartz.Calendar;
org.quartz.JobDetail;
org.quartz.Scheduler;
org.quartz.SchedulerFactory;
org.quartz.SimpleTrigger;
org.quartz.impl.calendar.AnnualCalendar;
LoadJob {
LoadJob(SchedulerFactory sf) Exception {
Log lg = LogFactory.getLog(LoadJob.);
lg.info();
Scheduler sched = sf.getScheduler();
lg.warn();
String[] groups = sched.getTriggerGroupNames();
( i = ; i < groups.length; i++) {
String[] names = sched.getTriggerNames(groups[i]);
( j = ; j < names.length; j++)
sched.unscheduleJob(names[j], groups[i]);
}
groups = sched.getJobGroupNames();
( i = ; i < groups.length; i++) {
String[] names = sched.getJobNames(groups[i]);
( j = ; j < names.length; j++)
sched.deleteJob(names[j], groups[i]);
}
lg.info();
lg.info();
String schedId = sched.getSchedulerInstanceId();
count = ;
JobDetail job = JobDetail( + count, ,
SecondJob.);
SimpleTrigger trigger = SimpleTrigger( + count, );
Calendar cal=;
cal = AnnualCalendar();
java.util.Calendar rightNow = java.util.Calendar.getInstance();
repeatInterval=**;
trigger = SimpleTrigger(,
Scheduler.DEFAULT_GROUP, rightNow.getTime(), ,
SimpleTrigger.REPEAT_INDEFINITELY, repeatInterval);
trigger.setCalendarName();
sched.addCalendar(, cal, , );
sched.scheduleJob(job, trigger);
lg.info();
count++;
job = JobDetail( + count, ,
SampleJob.);
trigger = SimpleTrigger( + count, );
cal = AnnualCalendar();
Date startTime = Date(System.currentTimeMillis() + 10000L
+ (count * ));
trigger = SimpleTrigger(,
Scheduler.DEFAULT_GROUP, startTime, ,
SimpleTrigger.REPEAT_INDEFINITELY, repeatInterval);
trigger.setCalendarName();
sched.addCalendar(, cal, , );
sched.scheduleJob(job, trigger);
lg.info();
lg.info(+count+);
lg.info();
sched.start();
lg.info();
lg.info();
{
Thread.sleep(80000L);
}(Exception e){
e.printStackTrace();
}
sched.shutdown();
}
main(String[] args) {
{
clearJobs = ;
scheduleJobs = ;
( i = ; i < args.length; i++) {
(args[i].equals()) clearJobs = ;
(args[i].equals()) scheduleJobs = ;
}
LoadJob( org.quartz.impl.StdSchedulerFactory());
} (Exception e) {
e.printStackTrace();
}
}
}
SampleJob:
com.demo.job;SecondJob:
java.sql.Connection;
java.sql.SQLException;
java.util.Date;
java.util.ResourceBundle;
org.quartz.Job;
org.quartz.JobDataMap;
org.quartz.JobExecutionContext;
org.quartz.JobExecutionException;
org.quartz.JobPersistenceException;
org.quartz.jobs.ee.mail.SendMailJob;
org.quartz.utils.DBConnectionManager;
SampleJob Job {
SampleJob() {
();
}
execute(JobExecutionContext context) JobExecutionException {
System.err.println( + context.getJobDetail().getFullName()
+ + Date() + );
JobDataMap data = context.getJobDetail().getJobDataMap();
ResourceBundle bundle = ResourceBundle.getBundle();
String smtp = bundle.getString();
String recipient = bundle.getString();
String sender = bundle.getString();
data.put(SendMailJob.PROP_SMTP_HOST,smtp);
data.put(SendMailJob.PROP_SENDER,sender);
predate = ;
{
{
System.out.println();
Connection con = getConnection();
data.put(SendMailJob.PROP_RECIPIENT,recipient);
data.put(SendMailJob.PROP_SUBJECT,);
data.put(SendMailJob.PROP_MESSAGE,);
SendMailJob mailjob = SendMailJob();
mailjob.execute(context);
con.close();
} (ClassCastException ignoree) {
}
} (Exception ignore) {
ignore.printStackTrace();
}
System.err.println( + context.getJobDetail().getFullName()
+ + Date() + );
}
main(String[] args) {
}
Connection getConnection() JobPersistenceException {
{
Connection conn = DBConnectionManager.getInstance().getConnection(
);
(conn == ) { SQLException(
+ + ); }
conn;
} (SQLException sqle) {
JobPersistenceException(
+ + + sqle.toString(), sqle);
} (Exception e) {
JobPersistenceException(
+ + + e.toString(), e,
JobPersistenceException.ERR_PERSISTENCE_CRITICAL_FAILURE);
}
}
}
com.demo.job;如果在j2ee中使用，只需將主類改爲Servlet即可。
java.sql.Connection;
java.sql.PreparedStatement;
java.sql.ResultSet;
java.sql.SQLException;
java.sql.Statement;
java.util.Date;
java.util.GregorianCalendar;
java.util.ResourceBundle;
org.quartz.Job;
org.quartz.JobDataMap;
org.quartz.JobExecutionContext;
org.quartz.JobExecutionException;
org.quartz.JobPersistenceException;
org.quartz.impl.jdbcjobstore.JobStoreSupport;
org.quartz.jobs.ee.mail.SendMailJob;
org.quartz.utils.DBConnectionManager;
SecondJob Job {
SecondJob() {
();
}
execute(JobExecutionContext context) JobExecutionException {
System.err.println( + context.getJobDetail().getFullName()
+ + Date() + );
JobDataMap data = context.getJobDetail().getJobDataMap();
ResourceBundle bundle = ResourceBundle.getBundle();
String smtp = bundle.getString();
String recipient = bundle.getString();
String sender = bundle.getString();
data.put(SendMailJob.PROP_SMTP_HOST,smtp);
data.put(SendMailJob.PROP_SENDER,sender);
predate = ;
{
{
System.out.println();
Connection con = getConnection();
con.close();
} (ClassCastException ignoree) {
}
} (Exception ignore) {
ignore.printStackTrace();
}
System.err.println( + context.getJobDetail().getFullName()
+ + Date() + );
}
main(String[] args) {
}
Connection getConnection() JobPersistenceException {
{
Connection conn = DBConnectionManager.getInstance().getConnection(
);
(conn == ) { SQLException(
+ + ); }
conn;
} (SQLException sqle) {
JobPersistenceException(
+ + + sqle.toString(), sqle);
} (Exception e) {
JobPersistenceException(
+ + + e.toString(), e,
JobPersistenceException.ERR_PERSISTENCE_CRITICAL_FAILURE);
}
}
}