java 监听器
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2022-05-16 22:05:46
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java 监听器
www.firnow.com 时间 ： 2009-10-20 作者：匿名 编辑：小张 点击： 314 [ 评论 ]
1、首先配置web.xml文件
<listener>
<listener-class>cn.com.spcs.ots.common.util.OverTimeSystemListener</listener-class>
</listener>
2、实现ServletContextListener接口
contextInitialized(final ServletContextEvent arg0)
contextDestroyed(ServletContextEvent arg0)
www.firnow.com 时间 ： 2009-10-20 作者：匿名 编辑：小张 点击： 314 [ 评论 ]
1、首先配置web.xml文件
<listener>
<listener-class>cn.com.spcs.ots.common.util.OverTimeSystemListener</listener-class>
</listener>
2、实现ServletContextListener接口
contextInitialized(final ServletContextEvent arg0)
contextDestroyed(ServletContextEvent arg0)
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Map;
import java.util.Timer;
import java.util.TimerTask;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import cn.com.cs.ots.bean.dao.DB2DAOImpl;
import cn.com.cs.ots.bean.dao.IDAO;
import cn.com.cs.ots.common.Constant;
/**
* 加班休假系统批处理启动
*
* @author
*/
public class OverTimeSystemListener implements ServletContextListener {
private Timer timer = null;
private TimerTask task = null;
protected IDAO dao;
private int executeCount = 0;
// 月份变量
private static int month = 1;
// 日期变量
private static int day = 1;
// 分钟变量
private static int minute = 1;
// 小时变量
private static int hour = 1;
// 秒变量
private static int second = 1;
/**
* 加班休假系统监听方法contextInitialized
*
* @param arg0
*
* 备注<br>
* 作者： 作成日：2008-10-22<br>
*/
public void contextInitialized(final ServletContextEvent arg0) {
SysLogger.info(this, "contextInitialized is start.");
timer = new Timer();
task = new TimerTask() {
public void run() {
try {
GregorianCalendar date = new GregorianCalendar();
month = date.get(Calendar.MONTH);
day = date.get(Calendar.DATE);
hour = date.get(Calendar.HOUR_OF_DAY);
minute = date.get(Calendar.MINUTE);
second = date.get(Calendar.SECOND);
// 日批处理类
EntryExitFileListener entryExitFileListener = new EntryExitFileListener();
// 月批处理类
AttendanceRecordListener attendanceRecordListener = new AttendanceRecordListener();
YearInput yearInput = new YearInput();
if ((hour == 15) && (minute == 35) && (second == 00)) {
// 初始化Dao
initDao(arg0);
getConnection();
String start = "20081101";
String end = "20081108";
while ((end.length()) == 8) {
if (start.equals(end)) {
break;
}
entryExitFileListener.doDayBatch(dao, start,
getNextDay(start));
start = getNextDay(start);
}
closeConnection();
}
// 每日6:00调用日批处理中方法，处理下班打卡记录、门卡信息和加班记录
if ((hour == 9) && (minute == 30) && (second == 00)) {
// String yesterdayDate = getYesterdayDate();
// String todayDate = getNextDay(yesterdayDate);
//
// // 初始化Dao
// initDao(arg0);
// getConnection();
// entryExitFileListener.doDayBatch(dao, yesterdayDate,
// todayDate);
// closeConnection();
}
// 每月一日10:00启动线程，导入考勤记录
// if ((day == 1) && (hour == 10) && (minute == 0)
// && (second == 1)) {
//
// // 初始化Dao
// initDao(arg0);
// getConnection();
// attendanceRecordListener.doStartTimeBatchSelect(dao);
// closeConnection();
//
// }
//
// if (executeCount == 0
// || (month == 12 && day == 30 && hour == 22
// && minute == 0 && second == 0)) {
// // 初始化Dao
// initDao(arg0);
// getConnection();
// yearInput.getInitValue(dao, executeCount);
// closeConnection();
// executeCount++;
// }
} catch (Exception e) {
e.printStackTrace();
} finally {
closeConnection();
}
}
};
timer.schedule(task, 10000, 500);
}
/**
* 监听结束方法contextDestroyed
*
* @param arg0
*
* 备注<br>
* 作者： 作成日：2008-10-22<br>
*/
public void contextDestroyed(ServletContextEvent arg0) {
timer.cancel();
SysLogger.info(this, "contextInitialized is end.");
}
/**
* 初始化dao
*
* @param arg
*
* 备注<br>
* 作者： 作成日：2008-10-22<br>
*/
private void initDao(ServletContextEvent arg) throws Exception {
dao = new DB2DAOImpl();
dao.setSqlTemplateName("cn.com.cs.ots.sql.SQLTemplateImpl");
dao.setSqlMap((Map) arg.getServletContext().getAttribute(
Constant.SQLTEMPLATE_KEY));
dao.setReturnTypeMap((Map) arg.getServletContext().getAttribute(
Constant.RETURNTYPE_KEY));
}
/**
* getConnection
*
*
* 备注<br>
* 作者： 作成日：2008-10-22<br>
*/
private void getConnection() {
try {
dao.getConnection();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* closeConnection
*
*
* 备注<br>
* 作者： 作成日：2008-10-22<br>
*/
private void closeConnection() {
try {
if (dao != null)
dao.closeConnection();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 得到前一天的String类型
*
*
* @param dateTime
* @return String
*
* 备注<br>
* 作者： 作成日：2008-10-22<br>
*/
private String getYesterdayDate() {
String dateTime = null;
Date pre_date = new Date(System.currentTimeMillis() - 1 * 24 * 3600
* 1000);
SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMdd");
dateTime = formatter.format(pre_date);
return dateTime;
}
/**
* 得到下一天的String类型
*
*
* @param dateTime
* @return String
* @throws ParseException
*
* 备注<br>
* 作者： 作成日：2008-10-22<br>
*/
public String getNextDay(String dateTime) throws ParseException {
Calendar now = Calendar.getInstance();
SimpleDateFormat simpledate = new SimpleDateFormat("yyyyMMdd");
Date date = null;
date = simpledate.parse(dateTime);
now.setTime(date);
int year = now.get(Calendar.YEAR);
int month = now.get(Calendar.MONTH);
int day = now.get(Calendar.DAY_OF_MONTH) + 1;
now.set(year, month, day);
String time = simpledate.format(now.</p>
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