当前位置:网站首页>定时任务 corn
定时任务 corn
2022-07-30 14:40:00 【努力学习,努力爱你!】
corn表达式
语法:秒 分 时 日 月 周 年(Spring 不支持)
http://www.quartz-scheduler.org/documentation/quartz-2.3.0/tutorials/crontrigger.htm
生成工具
https://www.toolscat.com/
特殊字符:
,:枚举;
(cron=“7,9,23 * * * * ?”):任意时刻的 7,9,23 秒启动这个任务;
-:范围:
(cron=“7-20 * * * * ?”):任意时刻的 7-20 秒之间,每秒启动一次
:任意;
指定位置的任意时刻都可以
/:步长;
(cron=“7/5 * * * * ?”):第 7 秒启动,每 5 秒一次;
(cron="/5 * * * * ?“):任意秒启动,每 5 秒一次;
?:(出现在日和周几的位置):为了防止日和周冲突,在周和日上如果要写通配符使用?
(cron=”* * * 1 * ?“):每月的 1 号,启动这个任务;
L:(出现在日和周的位置)”,
last:最后一个
(cron=”* * * ? * 3L"):每月的最后一个周二
W:
Work Day:工作日
(cron=“* * * W * ?”):每个月的工作日触发
(cron=“* * * LW * ?”):每个月的最后一个工作日触发
#:第几个
(cron=“* * * ? * 5#2”):每个月的第 2 个周
示例
| Expression* | Meaning |
|---|---|
| 0 0 12 * * ? | Fire at 12pm (noon) every day |
| 0 15 10 ? * * | Fire at 10:15am every day |
| 0 15 10 * * ? | Fire at 10:15am every day |
| 0 15 10 * * ? * | Fire at 10:15am every day |
| 0 15 10 * * ?2005 | Fire at 10:15am every day during the year 2005 |
| 0 * 14 * * ? | Fire every minute starting at 2pm and ending at 2:59pm, every day |
| 0 0/5 14 * * ? | Fire every 5 minutes starting at 2pm and ending at 2:55pm, every day |
| 0 0/5 14,18 * * ? | Fire every 5 minutes starting at 2pm and ending at 2:55pm, AND fire every 5 minutes starting at 6pm and ending at 6:55pm, every day |
| 0 0-5 14 * * ? | Fire every minute starting at 2pm and ending at 2:05pm, every day |
| 0 10,44 14 ? 3 WED | Fire at 2:10pm and at 2:44pm every Wednesdayin the month of March. |
| 0 15 10 ? * MON-FRI | Fire at 10:15am every Monday, Tuesday, Wednesday, Thursday and Friday |
| 0 15 10 15 * ? | Fire at 10:15am on the 15th day of every month |
| 0 15 10 L * ? | Fire at 10:15am on the last day of every month |
| 0 15 10 L-2 * ? | Fire at 10:15am on the 2nd-to-last last day of every month |
| 0 15 10 ? * 6L | Fire at 10:15am on the last Friday of every month |
| 0 15 10 ? * 6L | Fire at 10:15am on the last Friday of every month |
| 0 15 10 ? * 6L 2002-2005 | Fire at 10:15am on every last friday of every month during the years 2002, 2003, 2004 and 2005 |
| 0 15 10 ? * 6#3 | Fire at 10:15am on the third Friday of every month |
| 0 0 12 1/5 * ? | Fire at 12pm (noon) every 5 days every month, starting on the first day of the month. |
| 0 11 11 11 11 ? | Fire every November 11th at 11:11am |
使用
package com.jhj.gulimall.ssoclient.scheduled;
import org.springframework.scheduling.annotation.Async;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;
@Component
@EnableScheduling //开启定时任务
@EnableAsync //开启异步
public class HelloSchedule {
//与cron的区别
//spring 只允许6位 不允许年
// 在周几的位置 1-7表示周一到周日 :MON-SUN
/** *定时任务不应该阻塞 默认是阻塞的 *以异步方式执行 *支持定时任务线程池 配置 spring.task.scheduling.pool.size=5 不太好用 * 让定时任务加入线程 在类上使用@EnableAsync 在方法上使用@Async **/
@Async
@Scheduled(cron = "* * * * * ?")
public void Hello(){
System.out.println("hello");
}
}
作者声明
如有问题,欢迎指正!
边栏推荐
- Understand Chisel language. 28. Chisel advanced finite state machine (2) - Mealy state machine and comparison with Moore state machine
- 吃透Chisel语言.28.Chisel进阶之有限状态机(二)——Mealy状态机及与Moore状态机的对比
- Flink实时仓库-DWS层(状态编程,windowall的使用,数据保存到clickhouse)模板代码
- 组态 - 笔记
- 华为无线设备Mesh配置命令
- Smart Contract Security - Private Data Access
- CS内网横向移动 模拟渗透实操 超详细
- MASM32v11编程调用Process32First失败: 程序发出命令,但命令长度不正确
- Flink本地UI运行
- 瑞吉外卖项目实战Day02
猜你喜欢

Flink实时数仓完结

华为再发「天才少年」召集令!曾放弃360万年薪的他也来首秀

Remember an experience of interviewing an outsourcing company, should you go?

The highest level of wiring in the computer room, the beauty is suffocating

Flink real-time data warehouse completed

5. DOM

Excel使用Visual Basic Editor对宏进行修改

MaxWell scraped data

Before quitting, make yourself a roll king

Lock wait timeout exceeded解决方案
随机推荐
SLF4J的使用
【回归预测-lssvm分类】基于最小二乘支持向量机lssvm实现数据分类代码
B+树索引页大小是如何确定的?
元宇宙邮局AI航天主题系列数字藏品 将于7月30日10:00点上线“元邮数藏”
ESP32 Repeated Reboot Issue Arduino Shield Power Outage Detector
Fink异步IO的实战(关联维表)
第十一章 api mgmnt API 参考
那些破釜沉舟入局Web3.0的互联网精英都怎么样了?
A Small Case About Containers
MaxWell抓取数据
编译、链接 - 笔记 - 3
Before quitting, make yourself a roll king
localhost与127.0.0.1
MongoDB启动报错 Process: 29784 ExecStart=/usr/bin/mongod $OPTIONS (code=exited, status=14)
JSON common annotations
异常情况处置方案
canal抓取数据
从实例来看DAO:权力分散的伟大尝试
Normal and escaped strings for postgresql
MySql error: SqlError(Unable to execute query", "Can't create/write to file OS errno 2 - No such file...