Spring timed Dispatch

In many cases, it is necessary to use timed scheduling, such as running a crawler at regular intervals to crawl new data, with quartz,spring task and timer

Spring Task can compare it to a lightweight quartz, and it is simple to use, except that there is no need for additional packages outside of spring-related packages

Recommended use of annotation-style implementations

Import Org.springframework.scheduling.annotation.scheduled;import org.springframework.stereotype.component;@ Componentpublic class Webtask {    //every Five seconds    @Scheduled (cron = "0/5 * * * * *?")    public void Taskjob () {        System.out.println ("Test");}    }

In the relevant configuration, add this sentence configuration, no additional parameters

<task:annotation-driven/>

The specific analysis of Cron is as follows

Field      Allow value     allowed special characters sec       0-59        ,-*/min       0-59        ,-*/hour      0-23        ,-*/Date      1-31        ,-*?/L W C Month Part      1-12 or Jan-dec     ,-*/week      1-7 or Sun-sat      ,-*?/L C #年 (optional) Leave       blank, 1970-2099       ,-*/

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Quartz

　

Spring timed Dispatch