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Java定时任务

程序员文章站 2022-07-14 18:54:04
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一:启动线程,开启定时任务

import lombok.AllArgsConstructor;
import org.apache.log4j.Logger;
import org.springframework.boot.ApplicationArguments;
import org.springframework.boot.ApplicationRunner;
import org.springframework.stereotype.Component;

@Component
@AllArgsConstructor
public class PersonnelAttendanceThread implements ApplicationRunner {

    private static Logger log = Logger.getLogger(PersonnelAttendanceThread.class);
    private final DealData dealData;

    public String start() {

        dealData.uploadPersonnelAttendance();
        return "启动人员考勤上传市/区平台线程成功";
    }

    @Override
    public void run(ApplicationArguments args) throws Exception {

        log.info("启动人员考勤上传市/区平台线程");
        start();
    }
}

二:定时任务

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.future.platform.client.TrainingHttpClient;
import com.future.platform.config.TimeUtils;
import com.future.platform.mapper.setting.AttendanceMapper;
import com.future.platform.pojo.setting.person.Attendance;
import lombok.AllArgsConstructor;
import org.apache.log4j.Logger;
import org.springframework.stereotype.Component;

import java.util.*;

@Component
@AllArgsConstructor
public class DealData {

    private static Logger log = Logger.getLogger(DealData.class);

    private final AttendanceMapper attendanceMapper;
    private final TrainingHttpClient trainingHttpClient;

    //时间间隔(一天)
    private static final long PERIOD_DAY = 24 * 60 * 60 * 1000;

    public void uploadPersonnelAttendance() {

        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.HOUR_OF_DAY, 1); //凌晨1点开始执行任务
        calendar.set(Calendar.MINUTE, 0);
        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();
        //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(new TimerTask() {
            @Override
            public void run() {
                Calendar c = Calendar.getInstance();
                int day = c.get(Calendar.DAY_OF_MONTH);
                if (day == 4) {
                    //每月1号执行
                    List<Map<String, Object>> resultMapList = new ArrayList<>();
                    QueryWrapper wrapper = new QueryWrapper();
                    List<Attendance> attendanceList = attendanceMapper.selectList(wrapper);
                    if (attendanceList != null && attendanceList.size() > 0) {
                        for (Attendance attendance : attendanceList) {
                            Map<String, Object> map = new HashMap<>();
                            map.put("name", attendance.getName());
                            map.put("attendance", attendance.getAttendance());
                            map.put("projectCode", attendance.getProject_code());
                            map.put("post", attendance.getPost());
                            map.put("areaId", attendance.getArea_id());
                            String timeType = "yyyy-MM";
                            String chinaTime = TimeUtils.getChinaTime(timeType);
                            map.put("time", chinaTime);
                            resultMapList.add(map);
                        }
                    }
                    Map<String, Object> map = trainingHttpClient.uploadPersonnelAttendance(resultMapList);
                    System.out.println(map);
                }
            }
        }, date, PERIOD_DAY);
    }

    // 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();
    }
}