DynamicTask.java
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package com.genersoft.iot.vmp.conf;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
import org.springframework.scheduling.support.CronTrigger;
import org.springframework.stereotype.Component;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ScheduledFuture;
/**
* 动态定时任务
*/
@Component
public class DynamicTask {
@Autowired
private ThreadPoolTaskScheduler threadPoolTaskScheduler;
private Map<String, ScheduledFuture<?>> futureMap = new ConcurrentHashMap<>();
@Bean
public ThreadPoolTaskScheduler threadPoolTaskScheduler() {
return new ThreadPoolTaskScheduler();
}
public String startCron(String key, Runnable task, int cycleForCatalog) {
stopCron(key);
// scheduleWithFixedDelay 必须等待上一个任务结束才开始计时period， cycleForCatalog表示执行的间隔
ScheduledFuture future = threadPoolTaskScheduler.scheduleWithFixedDelay(task, cycleForCatalog * 1000L);
futureMap.put(key, future);
return "startCron";
}
public void stopCron(String key) {
if (futureMap.get(key) != null && !futureMap.get(key).isCancelled()) {
futureMap.get(key).cancel(true);
}
}
}