package com.ruoyi.common.utils; import java.util.concurrent.CancellationException; import java.util.concurrent.ExecutionException; import java.util.concurrent.ExecutorService; import java.util.concurrent.Future; import java.util.concurrent.TimeUnit; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * 线程相关工具类. * * @author ruoyi */ public class Threads { private static final Logger logger = LoggerFactory.getLogger(Threads.class); /** * sleep等待,单位为毫秒 */ public static void sleep(long milliseconds) { try { Thread.sleep(milliseconds); } catch (InterruptedException e) { return; } } /** * 停止线程池 * 先使用shutdown, 停止接收新任务并尝试完成所有已存在任务. * 如果超时, 则调用shutdownNow, 取消在workQueue中Pending的任务,并中断所有阻塞函数. * 如果仍人超時,則強制退出. * 另对在shutdown时线程本身被调用中断做了处理. */ public static void shutdownAndAwaitTermination(ExecutorService pool) { if (pool != null && !pool.isShutdown()) { pool.shutdown(); try { if (!pool.awaitTermination(120, TimeUnit.SECONDS)) { pool.shutdownNow(); if (!pool.awaitTermination(120, TimeUnit.SECONDS)) { logger.info("Pool did not terminate"); } } } catch (InterruptedException ie) { pool.shutdownNow(); Thread.currentThread().interrupt(); } } } /** * 打印线程异常信息 */ public static void printException(Runnable r, Throwable t) { if (t == null && r instanceof Future) { try { Future future = (Future) r; if (future.isDone()) { future.get(); } } catch (CancellationException ce) { t = ce; } catch (ExecutionException ee) { t = ee.getCause(); } catch (InterruptedException ie) { Thread.currentThread().interrupt(); } } if (t != null) { logger.error(t.getMessage(), t); } } }