巧妙实现每个月1号1点刷新

步骤一：

实现每天固定点刷新：

			FixTimeSchedule fixTimeSchedule = new FixTimeSchedule();
			String dFlashTime = SCPConfigration.GetIntance().get("scp.config.current.leftduration.flashTime");
			fixTimeSchedule.dayOfDelay(dFlashTime, new CurrentLeftDurationHandle());

package com.mobile263.util;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;

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

public class FixTimeSchedule {

	private static Log logger = LogFactory.getLog(FixTimeSchedule.class);
	private static DateFormat dateFormat = new SimpleDateFormat("yy-MM-dd HH:mm");
	private static DateFormat dayFormat = new SimpleDateFormat("yy-MM-dd");

	/**
	 * 每天按固定时间time，执行指定任务
	 */
	public void dayOfDelay(String fixTime, Runnable runnable) {
		ScheduledExecutorService executor = Executors.newScheduledThreadPool(1);
		long oneDay = 24 * 60 * 60 * 1000;
		long initDelay = getTimeMillis(fixTime) - System.currentTimeMillis();
		initDelay = initDelay > 0 ? initDelay : oneDay + initDelay;
		
		executor.scheduleAtFixedRate(runnable, initDelay, oneDay, TimeUnit.MILLISECONDS);
	}

	/**
	 * 获取给定时间对应的毫秒数
	 * 
	 * @param string
	 *            "HH:mm:ss"
	 * @return
	 */
	private static long getTimeMillis(String fixTime) {
		try {
			Date currentDate = dateFormat.parse(dayFormat.format(new Date()) + " " + fixTime);
			return currentDate.getTime();
			
		} catch (ParseException e) {
			logger.error(e.getMessage());
		}
		return 0;
	}
	
}

步骤二：

判断这个时间点是否是1号

package com.mobile263.scp.service;

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



/**
 * 控制通话剩余时长
 */

public class CurrentLeftDurationHandle implements Runnable {

	private static Log logger = LogFactory.getLog(CurrentLeftDurationHandle.class);
	private EMSSubsMasterDAO emsSubsMasterDAO = new EMSSubsMasterDAO();
	private EmsOutCallControlDAO emsOutCallControlDAO = new EmsOutCallControlDAO();

	@Override
	public void run(){

		logger.info("CurrentLeftDurationHandle enter");
		
		try {
			//判断当天是不是1号，是1号就执行
			if(!isFirstDay()) {
				logger.info("CurrentLeftDurationHandle left");
				return;
			}
			
            //执行需要执行的任务。
                

		} catch (Exception e) {
			logger.error("CurrentLeftDurationHandle thread error !!!  :" + e.getMessage());
		}

		logger.info("CurrentLeftDurationHandle left");
	}
	
	
	public boolean isFirstDay() {
		// 获取服务器的时间
		Date d = new Date();
		Calendar c = Calendar.getInstance();
		c.setTime(d);
		
		if (c.get(Calendar.DAY_OF_MONTH) == 1) {
			return true;
		}
		
		return false;
	}
	
}

完美~~~