线程池代码优化

ruoyi-common/src/main/java/com/ruoyi/common/utils/Threads.java

@@ -0,0 +1,62 @@
+package com.ruoyi.common.utils;
+
+import java.util.concurrent.ExecutorService;
+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("sys-user");
+
+    /**
+     * 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();
+            }
+        }
+    }
+}