Quartz 框架和cron表达式任务调度的例子（spring下实现定时发送邮件）

1.   建立一个web项目，引入下列包：

spring.jar，quartz-1.5.1.jar，commons-collections-2.1.1.jar，jta.jar ，

commons-logging-1.0.4.jar，activation.jar，commons-email-1.3.1.jar，mail.jar

2.
创建一个类，在类中添加一个方法execute,我们将对这个方法进行定时调度.

package com.quartz.test;

import java.util.Date;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import common.commonEmail;
public class Test {
private static Log logger = LogFactory.getLog(Test.class);//日志记录器
public Test()
{
}
public void execute()
{
logger.info("wjieTest:" + new Date());
//for(int i=0;i<100;i++)
//System.out.println("###############----"+i);
commonEmail st= new commonEmail();
st.send("*****.com", "wjie", "测试邮件发送", "测试成功！");
logger.info("wjieTest#######:" + new Date());
}
}

3. 发送邮件的java类

package common;

import org.apache.commons.mail.EmailException;
import org.apache.commons.mail.HtmlEmail;

public class commonEmail {
public static void send(
String to,/* 收信人地址 */ String toName,//收信人姓名
String subject, /* 主题 */
String body /* 内容 */
) {
try {
HtmlEmail email = new HtmlEmail();
email.setHostName("smtp.sina.com");//设置发信的smtp服务器
email.addTo(to, toName);//设置收件人帐号和收件人
email.setFrom("*******@sina.com", "*******");//设置发信的邮件帐号和发信人
email.setSubject(subject);//设置邮件主题
email.setAuthentication("*******@sina.com","*****");//如果smtp服务器需要认证的话，在这里设置帐号、密码
//email.setHtmlMsg(body,"text/html; charset=GB2312");//设置邮件正文和字符编码
email.setCharset("GB2312");
email.setHtmlMsg(body);
email.send();
} catch (EmailException e) {
e.printStackTrace();
}
}
public static void main(String[] args){
commonEmail st= new commonEmail();
st.send("*******@qq.com", "wjie", "测试邮件发送", "你好，测试成功！");
}
}

4.
Spring配置文件applicationContext.xml 修改如下：

<?xml version="1.0" encoding="UTF-8"?>
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd"> 
<!-- 要调用的工作类 -->
<bean id="quartzJob" class="com.quartz.test.Test"></bean>
<!-- 定义调用对象和调用对象的方法 -->
<bean id="jobtask" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
<!-- 调用的类 -->
<property name="targetObject">
<ref bean="quartzJob"/>
</property>
<!-- 调用类中的方法 -->
<property name="targetMethod">
<value>execute</value>
</property>
</bean>
<!-- 定义触发时间 -->
<bean id="doTime" class="org.springframework.scheduling.quartz.CronTriggerBean">
<property name="jobDetail">
<ref bean="jobtask"/>
</property>
<!-- cron表达式 -->
<property name="cronExpression">
<value>10,30,50 * * * * ?</value>
</property>
</bean>
<!-- 总管理类 如果将lazy-init='false'那么容器启动就会执行调度程序  -->
<bean id="startQuertz" lazy-init="false" autowire="no" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<property name="triggers">
<list>
<ref bean="doTime"/>
</list>
</property>
</bean>
</beans>

5. 修改web.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> <context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/spring/applicationContext.xml
</param-value>
</context-param>

<servlet>
<servlet-name>SpringContextServlet</servlet-name>
<servlet-class>org.springframework.web.context.ContextLoaderServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>

<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>