I:
/**
* @ClassName: CronUtil
* @Description: Cron表达式工具类 目前支持三种常用的cron表达式
* @author
* @date
*
*/
public class CronUtil {
/**
*
* 方法摘要:构建Cron表达式
*
* @param rate 频率 0秒;1分;2小时;3日;4月
* @param cycle 周期
* @return String
*/
public static String createLoopCronExpression(int rate, int cycle) {
String cron = "";
switch (rate) {
case 0:// 每cycle秒执行一次
cron = "0/" + cycle + " * * * * ?";
break;
case 1:// 每cycle分钟执行一次
cron = "0 0/" + cycle + " * * * ?";
break;
case 2:// 每cycle小时执行一次
cron = "0 0 0/" + cycle + " * * ?";
break;
case 3:// 每cycle天的0点执行一次
cron = "0 0 0 1/" + cycle + " * ?";
break;
case 4:// 每cycle月的1号0点执行一次
cron = "0 0 0 1 1/" + cycle + " ? ";
break;
case 5:// 每天cycle点执行一次
cron = "0 0 " + cycle+ " * * ?";
break;
default:// 默认每cycle秒执行一次
cron = "0/1 * * * * ?";
break;
}
return cron;
}
/**
*
* 方法摘要:构建Cron描述
*
* @param rate 频率 0秒;1分;2小时;3日;4月
* @param cycle 周期
* @return String
*/
public static String createLoopCronDescription(int rate, int cycle) {
String desc = "";
switch (rate) {
case 0:// 每cycle秒执行一次
desc = "每隔" + cycle + "秒触发一次任务";
break;
case 1:// 每cycle分钟执行一次
desc = "每隔" + cycle + "分钟触发一次任务";
break;
case 2:// 每cycle小时执行一次
desc = "每隔" + cycle + "小时触发一次任务";
break;
case 3:// 每cycle天的0点执行一次
desc = "每隔" + cycle + "天的0点触发一次任务";
break;
case 4:// 每cycle月的1号0点执行一次
desc = "每隔" + cycle + "月的1日0点触发一次任务";
break;
case 5:// 每天cycle点执行一次
desc = "每天" + cycle + "点执行一次任务";
break;
default:// 默认每cycle秒执行一次
desc = "每隔" + cycle + "秒触发一次任务";
break;
}
return desc;
}
public static void main(String[] args) {
System.out.println(CronUtil.createLoopCronExpression(4, 1));
System.out.println(CronUtil.createLoopCronDescription(4, 1));
}
}
=====================
II:
/** @ClassName: CronUtil
* @Description: Cron表达式工具类
* @author
* @date
*
*/
public class CronUtil02 {
/**
*
*方法摘要:构建Cron表达式
*@param taskScheduleModel
*@return String
*/
public static String createCronExpression(TaskScheduleModel taskScheduleModel){
StringBuffer cronExp = new StringBuffer("");
if(null == taskScheduleModel.getJobType()) {
System.out.println("执行周期未配置" );//执行周期未配置
}
if (null != taskScheduleModel.getSecond()
&& null != taskScheduleModel.getMinute()
&& null != taskScheduleModel.getHour()) {
//秒
cronExp.append(taskScheduleModel.getSecond()).append(" ");
//分
cronExp.append(taskScheduleModel.getMinute()).append(" ");
//小时
cronExp.append(taskScheduleModel.getHour()).append(" ");
//每天
if(taskScheduleModel.getJobType().intValue() == 1){
cronExp.append("* ");//日
cronExp.append("* ");//月
cronExp.append("?");//周
}
//按每周
else if(taskScheduleModel.getJobType().intValue() == 3){
//一个月中第几天
cronExp.append("? ");
//月份
cronExp.append("* ");
//周
Integer[] weeks = taskScheduleModel.getDayOfWeeks();
for(int i = 0; i < weeks.length; i++){
if(i == 0){
cronExp.append(weeks[i]);
} else{
cronExp.append(",").append(weeks[i]);
}
}
}
//按每月
else if(taskScheduleModel.getJobType().intValue() == 2){
//一个月中的哪几天
Integer[] days = taskScheduleModel.getDayOfMonths();
for(int i = 0; i < days.length; i++){
if(i == 0){
cronExp.append(days[i]);
} else{
cronExp.append(",").append(days[i]);
}
}
//月份
cronExp.append(" * ");
//周
cronExp.append("?");
}
}
else {
System.out.println("时或分或秒参数未配置" );//时或分或秒参数未配置
}
return cronExp.toString();
}
/**
*
*方法摘要:生成计划的详细描述
*@param taskScheduleModel
*@return String
*/
public static String createDescription(TaskScheduleModel taskScheduleModel){
StringBuffer description = new StringBuffer("");
//计划执行开始时间
// Date startTime = taskScheduleModel.getScheduleStartTime();
if (null != taskScheduleModel.getSecond()
&& null != taskScheduleModel.getMinute()
&& null != taskScheduleModel.getHour()) {
//按每天
if(taskScheduleModel.getJobType().intValue() == 1){
description.append("每天");
description.append(taskScheduleModel.getHour()).append("时");
description.append(taskScheduleModel.getMinute()).append("分");
description.append(taskScheduleModel.getSecond()).append("秒");
description.append("执行");
}
//按每周
else if(taskScheduleModel.getJobType().intValue() == 3){
if(taskScheduleModel.getDayOfWeeks() != null && taskScheduleModel.getDayOfWeeks().length > 0) {
String days = "";
for(int i : taskScheduleModel.getDayOfWeeks()) {
days += "周" + i;
}
description.append("每周的").append(days).append(" ");
}
if (null != taskScheduleModel.getSecond()
&& null != taskScheduleModel.getMinute()
&& null != taskScheduleModel.getHour()) {
description.append(",");
description.append(taskScheduleModel.getHour()).append("时");
description.append(taskScheduleModel.getMinute()).append("分");
description.append(taskScheduleModel.getSecond()).append("秒");
}
description.append("执行");
}
//按每月
else if(taskScheduleModel.getJobType().intValue() == 2){
//选择月份
if(taskScheduleModel.getDayOfMonths() != null && taskScheduleModel.getDayOfMonths().length > 0) {
String days = "";
for(int i : taskScheduleModel.getDayOfMonths()) {
days += i + "号";
}
description.append("每月的").append(days).append(" ");
}
description.append(taskScheduleModel.getHour()).append("时");
description.append(taskScheduleModel.getMinute()).append("分");
description.append(taskScheduleModel.getSecond()).append("秒");
description.append("执行");
}
}
return description.toString();
}
public static void main(String[] args) {
//执行时间:每天的12时12分12秒 start
TaskScheduleModel taskScheduleModel = new TaskScheduleModel();
taskScheduleModel.setJobType(1);//按每天
Integer hour = 1; //时
Integer minute = 32; //分
Integer second = 45; //秒
taskScheduleModel.setHour(hour);
taskScheduleModel.setMinute(minute);
taskScheduleModel.setSecond(second);
String cropExp = createCronExpression(taskScheduleModel);
System.out.println(cropExp + " : " + createDescription(taskScheduleModel));
//执行时间:每天的12时12分12秒 end
taskScheduleModel.setJobType(3);//每周的哪几天执行
Integer[] dayOfWeeks = new Integer[3];
dayOfWeeks[0] = 1;
dayOfWeeks[1] = 2;
dayOfWeeks[2] = 3;
taskScheduleModel.setDayOfWeeks(dayOfWeeks);
cropExp = createCronExpression(taskScheduleModel);
System.out.println(cropExp + " : " + createDescription(taskScheduleModel));
taskScheduleModel.setJobType(2);//每月的哪几天执行
Integer[] dayOfMonths = new Integer[3];
dayOfMonths[0] = 1;
dayOfMonths[1] = 22;
dayOfMonths[2] = 12;
taskScheduleModel.setDayOfMonths(dayOfMonths);
cropExp = createCronExpression(taskScheduleModel);
System.out.println(cropExp + " : " + createDescription(taskScheduleModel));
System.out.println("================");
taskScheduleModel = new TaskScheduleModel();
taskScheduleModel.setJobType(1);//按每天
hour = 1; //时
minute = 45; //分
second = 0;
taskScheduleModel.setHour(hour);
taskScheduleModel.setMinute(minute);
taskScheduleModel.setSecond(second);
cropExp = createCronExpression(taskScheduleModel);
System.out.println(cropExp + " : " + createDescription(taskScheduleModel));
}
}
package cron;
import lombok.Data;
/**
* @Description:
* @param:
* @Return:
* @Throws:
* @Author:
* @Date: 2022/4/1 15:51
*/
@Data
public class TaskScheduleModel {
/**
* 所选作业类型:
* 1 -> 每天
* 2 -> 每月
* 3 -> 每周
* 4 ->间隔(每隔2个小时,每隔30分钟)
*/
Integer jobType;
/**一周的哪几天*/
Integer[] dayOfWeeks;
/**一个月的哪几天*/
Integer[] dayOfMonths;
/**秒 */
Integer second;
/**分 */
Integer minute;
/**时 */
Integer hour;
}
cron generate utils
最新推荐文章于 2024-06-14 10:43:27 发布