Main方法定点执行线程任务

package updateWeight;

import java.util.Calendar;
import java.util.Date;
import java.util.Timer;

import db.DbLog;
public class TimerManager  {

    public static void main(String[] args) {
        
        DbLog.getInstance().setJarcode("updateWeight10005");// jar编码
        new TimerManager(); 

    }
    
    private static final long PERIOD_DAY = 24 * 60 * 60 * 1000;  
    public TimerManager() {  
        Calendar calendar = Calendar.getInstance();  
        calendar.set(Calendar.HOUR_OF_DAY, 1); //凌晨1点  
        calendar.set(Calendar.MINUTE, 1);  
        calendar.set(Calendar.SECOND, 0);  
        Date date=calendar.getTime(); //第一次执行定时任务的时间  
        //如果第一次执行定时任务的时间 小于当前的时间  
        //此时要在 第一次执行定时任务的时间加一天，以便此任务在下个时间点执行。如果不加一天，任务会立即执行。  
        if (date.before(new Date())) {  
            date = this.addDay(date, 1);  
        }  
        Timer timer = new Timer();  
        WeightService task = new WeightService();  
        //安排指定的任务在指定的时间开始进行重复的固定延迟执行。  
        timer.schedule(task,date,Calendar.DAY_OF_MONTH);    
    }  
    // 增加或减少天数  
    public Date addDay(Date date, int num) {  
        Calendar startDT = Calendar.getInstance();  
        startDT.setTime(date);  
        startDT.add(Calendar.DAY_OF_MONTH, num);  
        return startDT.getTime();  
    }
    public static long getPeriodDay() {
        return PERIOD_DAY;
    }  
    

}

package updateWeight;

import java.util.TimerTask;

import db.ConInfo;
import db.DbHandle;
import db.DbLog;

public class WeightService extends TimerTask {

    public void run() {
        DbHandle.getInstance().setConInfo(new ConInfo(
                "jdbc:mysql://192.168.1.180:3306/kegj?useUnicode=true&characterEncoding=UTF-8", "root", "123456"));
        String sqlgoodssql = "update kn_goods set weight = weight - 20  where weight > 1020; ";
        String inspirationsql = "update kn_inspiration set weight = weight - 20 where weight > 1020;";
        String repairmastersql = "update kn_repair_master set weight = weight - 20 where weight > 1020;";
        String sellerprefersql = "update kn_sellerprefer set weight = weight - 20 where weight > 1020;";

        System.out.println("-----------------------------------------");
        int sum1 = DbHandle.getInstance().update(sqlgoodssql);
        int sum2 = DbHandle.getInstance().update(inspirationsql);
        int sum3 = DbHandle.getInstance().update(repairmastersql);
        int sum4 = DbHandle.getInstance().update(sellerprefersql);
        System.out.println(sum1);
        System.out.println(sum2);
        System.out.println(sum3);
        System.out.println(sum4);
        System.out.println("345");
        DbLog.getInstance()
                .saveLog("影响条数goods,inspiration,master,kn_sellerprefer:" + sum1 + "," + sum2 + "," + sum3 + "," + sum4);

    }
}