spring中的定时任务调度用例

在application-quartz.xml配置文件中添加如下配置信息：

<!-- Quartz -->
     <bean id="getSendEmailObject" class="com.luguang.baseinfo.util.SendEmailJob">
     <property name="sessionFactory" ref="sessionFactory" />
    </bean>  
      
    <bean id="getSendEmailtask" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
         <!-- 调用的类 -->
         <property name="targetObject">
             <ref bean="getSendEmailObject"/>
         </property>
         <!-- 调用类中的方法 -->
         <property name="targetMethod">
             <value>taskjob</value>
         </property>
     </bean>
     <!-- 定义触发时间 -->
     <bean id="getSendEmailTime" class="org.springframework.scheduling.quartz.CronTriggerBean">
         <property name="jobDetail">
             <ref bean="getSendEmailtask"/>
         </property>
         <!-- cron表达式 -->
         <property name="cronExpression">
         <value>0 0 9 * * ?</value>
             <!--    <value>0 19 45 ? * * </value>--> 
         </property>
     </bean>

对应的调用类如下：

package com.luguang.baseinfo.util;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.List;

import javax.persistence.Transient;

import org.apache.commons.mail.EmailException;
import org.apache.commons.mail.SimpleEmail;
import org.hibernate.SessionFactory;
import org.hibernate.classic.Session;
import org.quartz.JobExecutionException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;

import com.luguang.model.LgmUser;
import com.luguang.product.service.LgpProductLicenseService;
import com.luguang.project.service.LgpLicenseService;

public class SendEmailJob {
 
 private SessionFactory sessionFactory;
 private LgpLicenseService lgpLicenseService;
 private LgpProductLicenseService lgpProductLicenseService;
 
 
 public LgpProductLicenseService getLgpProductLicenseService() {
  return lgpProductLicenseService;
 }
 @Autowired
 public void setLgpProductLicenseService(
   LgpProductLicenseService lgpProductLicenseService) {
  this.lgpProductLicenseService = lgpProductLicenseService;
 }
 public LgpLicenseService getLgpLicenseService() {
  return lgpLicenseService;
 }
 @Autowired
 public void setLgpLicenseService(LgpLicenseService lgpLicenseService) {
  this.lgpLicenseService = lgpLicenseService;
 }

public SessionFactory getSessionFactory() {
  return sessionFactory;
 }

public void setSessionFactory(SessionFactory sessionFactory) {
  this.sessionFactory = sessionFactory;
 }

public SendEmailJob() {
  
 }
 @Transient
 public void taskjob() throws JobExecutionException {
  lgpLicenseService.sendEmail();
  lgpProductLicenseService.sendEmail();
  
 }
 
 // 判断传入对象是否是空字符串
 public boolean isNullOrEmptyString(Object o) {
  if (o == null) {
   return true;
  }
  if (o instanceof String) {
   String str = (String) o;
   if (str.length() == 0) {
    return true;
   }
  }
  return false;
 }
 /**判断是否是节假日
  * @param checkDay
  * @param isWeekend 1是周末 0不是周末
  * @return true为是 ，否则为否
  */
 public boolean checkDayIsHoliday(Session session,Date checkDay)
 {
  int isWeekend = 0;
  Calendar cal = Calendar.getInstance();
  cal.setTime(checkDay);
  if (cal.get(Calendar.DAY_OF_WEEK) == 1 || cal.get(Calendar.DAY_OF_WEEK) == 7) {
   isWeekend = 1;
  }
  
  String hql = "SELECT a FROM LgpHoliday a WHERE to_char(a.startDate,'YYYY-MM-DD') <= '" + new SimpleDateFormat("yyyy-MM-dd").format(checkDay) + "' "
  + " and to_char(a.endDate,'YYYY-MM-DD') >= '" + new SimpleDateFormat("yyyy-MM-dd").format(checkDay) + "' and a.isActive = '0' ";
  if (isWeekend == 0) {
   hql += " and a.holidayType != '2' ";
  }
  
  if (isWeekend == 1) {
   hql += " and a.holidayType = '2' ";
  }
  
  List list = session.createQuery(hql).list();
  if (isWeekend == 1 && list.size() > 0) {
   return false;
  }
  if (isWeekend == 0 && list.size() == 0) {
   return false;
  }
  
  return true;
 }

}

service层代码如下：

public String sendEmail(){
  return lgpProductLicenseDao.sendEmail();
  
 }

dao层代码如下：

/*
  * 发送电子邮件
  */
 public String sendEmail(){
  Date now=new Date();
  EmailForProduct emailForProduct;
  String hql="select new com.lg.product.model.EmailForProduct(a.productName,b.lgpLicenseId,c.userAlias,d.mailAddress,b.endDate,b.remindDays) from LgpProduct as a,LgpLicense as b,LgmUser as c,LgmUserIncrement as d where 1=1"
   +" and a.lgpProductId=b.lgpProductId"
   +" and a.productLeader=c.userId"
   +" and c.userId=d.userId";
  List list=this.getHibernateTemplate().find(hql);
  if(list!=null&&list.size()>0){
   for(int i=0;i<list.size();i++){
    emailForProduct=(EmailForProduct)list.get(i);
    long interval=(emailForProduct.getEndDate().getTime()-now.getTime())/1000;
    if(interval<emailForProduct.getRemindDays().longValue()*24*60*60){
     this.sendEmail(emailForProduct.getProductName(), emailForProduct.getEmailAddress());
    }
   }
  }
  return null;
  
 }
 public void sendEmail(String productName ,String emailAddress){
  SimpleEmail email=new SimpleEmail();
  email.setHostName("smtp.126.com");
  email.setAuthentication("name", "password");
  email.setCharset("UTF-8");
  try {
   email.addTo(emailAddress);
   email.setFrom(name@server.com);
   email.setSubject("subject");
   email.setMsg("msg");
   email.send();
  } catch (EmailException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
 }

实现邮件的定时发送，通过在程序中判断邮件发送时间来控制邮件发送，避免在配置文件中设定动态的邮件发送时间（配置文件中获得动态参数是非常麻烦的，尽量在程序中实现）。