二级菜单网站如何做伪静态,昆明网站建设哪家最好,wordpress图片去水印,网站织梦程序改成wordpressjava定时任务 设置开始时间、结束时间#xff1b;每周一、四、六执行#xff1b;并且隔n周执行。最后计算所有执行时间#xff09; 定时任务需求程序设计依赖引入程序一、计算开始时间那周的周一时间二、根据executeTime和weekList.get(n),计算每个cron表达式。三、根据一和… java定时任务 设置开始时间、结束时间每周一、四、六执行并且隔n周执行。最后计算所有执行时间 定时任务需求程序设计依赖引入程序一、计算开始时间那周的周一时间二、根据executeTime和weekList.get(n),计算每个cron表达式。三、根据一和二得出的cron表达式和开始时间的那周的周一时间计算每次定时任务执行的第一次时间。四、计算所有执行时间五、测试六、测试结果 最终代码 定时任务需求
在一个特殊的项目需求中我们设计一个定时任务并算出它所有的执行时间点。
1.有开始时间和结束时间。 2.每周一、四、六执行动态参数 执行的时和分HH:mm动态参数 3.隔n周执行动态参数 4.算每次执行时间。
程序设计
参数类型说明定时任务开始时间startTimeyyyy-MM-dd定时任务结束时间endTimeyyyy-MM-dd执行时间executeTimeHH:mm周几执行列表weekList [0,1,2,3,4,5,6] 代表[周日,周一,周二,周三,周四,周五,周六]cron中 [1,2,3,4,5,6,7] 代表[周日,周一,周二,周三,周四,周五,周六]隔几周执行一次interval数字n
依赖引入 dependencygroupIdorg.quartz-scheduler/groupIdartifactIdquartz/artifactIdversion2.3.2/version/dependency程序
一、计算开始时间那周的周一时间
考虑隔周执行一定要以开始时间那个周的周一为起点否则时间会算错。 /*** 开始时间点的周一时间* param startDate* return*/public static Date getMonday(Date startDate){/*** 计算给出时间的周一时间*/Calendar calendar Calendar.getInstance();calendar.setTime(startDate);// 将小时、分钟、秒和毫秒字段设置为0calendar.set(Calendar.HOUR_OF_DAY, 0);calendar.set(Calendar.MINUTE, 0);calendar.set(Calendar.SECOND, 0);calendar.set(Calendar.MILLISECOND, 0);// 将日期设置为本周第一天默认为周日的前一天即周一calendar.add(Calendar.DAY_OF_WEEK, Calendar.MONDAY - calendar.get(Calendar.DAY_OF_WEEK));// 输出周一0点的时间return calendar.getTime();}
二、根据executeTime和weekList.get(n),计算每个cron表达式。
/***计算cron表达式*param executeTime 执行时间 HH:mm* param week 周几* return cron表达式* throws ParseException*/public static String createCronStr(String executeTime, Integer week) {String weekStr String.valueOf(week 1);// 设置cron表达式周三下午3点30分执行String cronExpression 0 %1$s %2$s ? * %3$s;String[] times executeTime.split(:);String hour times[0];String minute times[1];return String.format(cronExpression, minute, hour, weekStr);}
三、根据一和二得出的cron表达式和开始时间的那周的周一时间计算每次定时任务执行的第一次时间。 /*** 计算下次执行时间* param cronExpression cron* param startTime2 开始时间(开始时间的周一时间)* return* throws ParseException*/public static Date getNextExecutionTime(String cronExpression, Date startTime2) throws ParseException {CronExpression cron new CronExpression(cronExpression);Date nextExecutionTime cron.getNextValidTimeAfter(startTime2);System.out.println(下次执行时间: nextExecutionTime);return nextExecutionTime;}
四、计算所有执行时间 /**** param startTime 定时任务开始时间 yyyy-MM-dd* param endTime 定时任务结束时间 yyyy-MM-dd* param executeTime 执行时间 HH:mm* param weekList 周几执行列表 [0,1,2,3,4,5,6] 代表[周日,周一,周二,周三,周四,周五,周六]* param interval 隔几周执行一次* return*/public static ListString getExecuteTimeList(String startTime, String endTime, String executeTime, ListInteger weekList, int interval) {ListString list new ArrayList();try {String startStr startTime executeTime;String endStr endTime executeTime;SimpleDateFormat dateFormat new SimpleDateFormat(yyyy-MM-ddHH:mm);Date endDate dateFormat.parse(endStr);Date startDate dateFormat.parse(startStr);Date now new Date();//设置日期过期返回空if (now.getTime() endDate.getTime()) {return new ArrayList();}interval;for (Integer week : weekList) {String cronExpression createCronStr(executeTime, week);if (StringUtils.isBlank(cronExpression)) {continue;}Date startTime2 getMonday(startDate);Date nextExecutionTime getNextExecutionTime(cronExpression,startTime2);int add 0;Date nownext nextExecutionTime;while (nownext.getTime() endDate.getTime()) {nownext new Date(nextExecutionTime.getTime() add * interval * 7 * 24 * 60 * 60 * 1000L);SimpleDateFormat dateFormat2 new SimpleDateFormat(yyyy-MM-dd HH:mm);String str dateFormat2.format(nownext);if (nownext.getTime() endDate.getTime() nownext.getTime()startDate.getTime()) {list.add(str);}add;}}Collections.sort(list);} catch (ParseException e) {System.out.println(解析异常: e.getMessage());e.printStackTrace();}return list;}五、测试
计算2024-06-15到2026-12-31每周一、四、六的2040,并隔一周执行一次的所有执行时间 public static void main(String[] args) {ListInteger week new ArrayList();week.add(1);week.add(4);week.add(6);long start System.currentTimeMillis();ListString list getExecuteTimeList(2024-06-15, 2026-12-31, 20:40, week, 1);long end System.currentTimeMillis();System.out.println(end - start ms);for(String element : list) {System.out.println(element);}}六、测试结果
下次执行时间: Mon Jun 10 20:40:00 CST 2024
下次执行时间: Thu Jun 13 20:40:00 CST 2024
下次执行时间: Sat Jun 15 20:40:00 CST 2024
74 ms
2024-06-15 20:40
2024-06-24 20:40
2024-06-27 20:40
2024-06-29 20:40
2024-07-08 20:40
2024-07-11 20:40
2024-07-13 20:40
2024-07-22 20:40
2024-07-25 20:40
2024-07-27 20:40
2024-08-05 20:40
2024-08-08 20:40
2024-08-10 20:40
2024-08-19 20:40
2024-08-22 20:40
2024-08-24 20:40
2024-09-02 20:40
2024-09-05 20:40
2024-09-07 20:40
2024-09-16 20:40
2024-09-19 20:40
2024-09-21 20:40
2024-09-30 20:40
2024-10-03 20:40
2024-10-05 20:40
2024-10-14 20:40
2024-10-17 20:40
2024-10-19 20:40
2024-10-28 20:40
2024-10-31 20:40
2024-11-02 20:40
2024-11-11 20:40
2024-11-14 20:40
2024-11-16 20:40
2024-11-25 20:40
2024-11-28 20:40
2024-11-30 20:40
2024-12-09 20:40
2024-12-12 20:40
2024-12-14 20:40
2024-12-23 20:40
2024-12-26 20:40
2024-12-28 20:40
2025-01-06 20:40
2025-01-09 20:40
2025-01-11 20:40
2025-01-20 20:40
2025-01-23 20:40
2025-01-25 20:40
2025-02-03 20:40
2025-02-06 20:40
2025-02-08 20:40
2025-02-17 20:40
2025-02-20 20:40
2025-02-22 20:40
2025-03-03 20:40
2025-03-06 20:40
2025-03-08 20:40
2025-03-17 20:40
2025-03-20 20:40
2025-03-22 20:40
2025-03-31 20:40
2025-04-03 20:40
2025-04-05 20:40
2025-04-14 20:40
2025-04-17 20:40
2025-04-19 20:40
2025-04-28 20:40
2025-05-01 20:40
2025-05-03 20:40
2025-05-12 20:40
2025-05-15 20:40
2025-05-17 20:40
2025-05-26 20:40
2025-05-29 20:40
2025-05-31 20:40
2025-06-09 20:40
2025-06-12 20:40
2025-06-14 20:40
2025-06-23 20:40
2025-06-26 20:40
2025-06-28 20:40
2025-07-07 20:40
2025-07-10 20:40
2025-07-12 20:40
2025-07-21 20:40
2025-07-24 20:40
2025-07-26 20:40
2025-08-04 20:40
2025-08-07 20:40
2025-08-09 20:40
2025-08-18 20:40
2025-08-21 20:40
2025-08-23 20:40
2025-09-01 20:40
2025-09-04 20:40
2025-09-06 20:40
2025-09-15 20:40
2025-09-18 20:40
2025-09-20 20:40
2025-09-29 20:40
2025-10-02 20:40
2025-10-04 20:40
2025-10-13 20:40
2025-10-16 20:40
2025-10-18 20:40
2025-10-27 20:40
2025-10-30 20:40
2025-11-01 20:40
2025-11-10 20:40
2025-11-13 20:40
2025-11-15 20:40
2025-11-24 20:40
2025-11-27 20:40
2025-11-29 20:40
2025-12-08 20:40
2025-12-11 20:40
2025-12-13 20:40
2025-12-22 20:40
2025-12-25 20:40
2025-12-27 20:40
2026-01-05 20:40
2026-01-08 20:40
2026-01-10 20:40
2026-01-19 20:40
2026-01-22 20:40
2026-01-24 20:40
2026-02-02 20:40
2026-02-05 20:40
2026-02-07 20:40
2026-02-16 20:40
2026-02-19 20:40
2026-02-21 20:40
2026-03-02 20:40
2026-03-05 20:40
2026-03-07 20:40
2026-03-16 20:40
2026-03-19 20:40
2026-03-21 20:40
2026-03-30 20:40
2026-04-02 20:40
2026-04-04 20:40
2026-04-13 20:40
2026-04-16 20:40
2026-04-18 20:40
2026-04-27 20:40
2026-04-30 20:40
2026-05-02 20:40
2026-05-11 20:40
2026-05-14 20:40
2026-05-16 20:40
2026-05-25 20:40
2026-05-28 20:40
2026-05-30 20:40
2026-06-08 20:40
2026-06-11 20:40
2026-06-13 20:40
2026-06-22 20:40
2026-06-25 20:40
2026-06-27 20:40
2026-07-06 20:40
2026-07-09 20:40
2026-07-11 20:40
2026-07-20 20:40
2026-07-23 20:40
2026-07-25 20:40
2026-08-03 20:40
2026-08-06 20:40
2026-08-08 20:40
2026-08-17 20:40
2026-08-20 20:40
2026-08-22 20:40
2026-08-31 20:40
2026-09-03 20:40
2026-09-05 20:40
2026-09-14 20:40
2026-09-17 20:40
2026-09-19 20:40
2026-09-28 20:40
2026-10-01 20:40
2026-10-03 20:40
2026-10-12 20:40
2026-10-15 20:40
2026-10-17 20:40
2026-10-26 20:40
2026-10-29 20:40
2026-10-31 20:40
2026-11-09 20:40
2026-11-12 20:40
2026-11-14 20:40
2026-11-23 20:40
2026-11-26 20:40
2026-11-28 20:40
2026-12-07 20:40
2026-12-10 20:40
2026-12-12 20:40
2026-12-21 20:40
2026-12-24 20:40
2026-12-26 20:40Process finished with exit code 0最终代码 import org.apache.commons.lang.StringUtils;
import org.quartz.CronExpression;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;/*** author dume* ClassName CronUtils* description: TODO* date 2024年06月06日* version: 1.0*/
public class CronUtils {/**** param startTime 定时任务开始时间 yyyy-MM-dd* param endTime 定时任务结束时间 yyyy-MM-dd* param executeTime 执行时间 HH:mm* param weekList 周几执行列表 [0,1,2,3,4,5,6] 代表[周日,周一,周二,周三,周四,周五,周六]* param interval 隔几周执行一次* return*/public static ListString getExecuteTimeList(String startTime, String endTime, String executeTime, ListInteger weekList, int interval) {ListString list new ArrayList();try {String startStr startTime executeTime;String endStr endTime executeTime;SimpleDateFormat dateFormat new SimpleDateFormat(yyyy-MM-ddHH:mm);Date endDate dateFormat.parse(endStr);Date startDate dateFormat.parse(startStr);Date now new Date();//设置日期过期返回空if (now.getTime() endDate.getTime()) {return new ArrayList();}interval;for (Integer week : weekList) {String cronExpression createCronStr(executeTime, week);if (StringUtils.isBlank(cronExpression)) {continue;}Date startTime2 getMonday(startDate);Date nextExecutionTime getNextExecutionTime(cronExpression,startTime2);int add 0;Date nownext nextExecutionTime;while (nownext.getTime() endDate.getTime()) {nownext new Date(nextExecutionTime.getTime() add * interval * 7 * 24 * 60 * 60 * 1000L);SimpleDateFormat dateFormat2 new SimpleDateFormat(yyyy-MM-dd HH:mm);String str dateFormat2.format(nownext);if (nownext.getTime() endDate.getTime() nownext.getTime()startDate.getTime()) {list.add(str);}add;}}Collections.sort(list);} catch (ParseException e) {System.out.println(解析异常: e.getMessage());e.printStackTrace();}return list;}/***计算cron表达式*param executeTime 执行时间 HH:mm* param week 周几* return cron表达式* throws ParseException*/public static String createCronStr(String executeTime, Integer week) {String weekStr String.valueOf(week 1);// 设置cron表达式周三下午3点30分执行String cronExpression 0 %1$s %2$s ? * %3$s;String[] times executeTime.split(:);String hour times[0];String minute times[1];return String.format(cronExpression, minute, hour, weekStr);}/*** 计算下次执行时间* param cronExpression cron* param startTime2 开始时间(开始时间的周一时间)* return* throws ParseException*/public static Date getNextExecutionTime(String cronExpression, Date startTime2) throws ParseException {CronExpression cron new CronExpression(cronExpression);Date nextExecutionTime cron.getNextValidTimeAfter(startTime2);System.out.println(下次执行时间: nextExecutionTime);return nextExecutionTime;}/*** 开始时间点的周一时间* param startDate* return*/public static Date getMonday(Date startDate){/*** 计算给出时间的周一时间*/Calendar calendar Calendar.getInstance();calendar.setTime(startDate);// 将小时、分钟、秒和毫秒字段设置为0calendar.set(Calendar.HOUR_OF_DAY, 0);calendar.set(Calendar.MINUTE, 0);calendar.set(Calendar.SECOND, 0);calendar.set(Calendar.MILLISECOND, 0);// 将日期设置为本周第一天默认为周日的前一天即周一calendar.add(Calendar.DAY_OF_WEEK, Calendar.MONDAY - calendar.get(Calendar.DAY_OF_WEEK));// 输出周一0点的时间return calendar.getTime();}public static void main(String[] args) {ListInteger week new ArrayList();week.add(1);week.add(4);week.add(6);long start System.currentTimeMillis();ListString list getExecuteTimeList(2024-06-15, 2026-12-31, 20:40, week, 1);long end System.currentTimeMillis();System.out.println(end - start ms);for(String element : list) {System.out.println(element);}}}
