diff --git a/hutool-core/src/main/java/cn/hutool/core/thread/ThreadUtil.java b/hutool-core/src/main/java/cn/hutool/core/thread/ThreadUtil.java
index 0227ca523..3418bd7cb 100644
--- a/hutool-core/src/main/java/cn/hutool/core/thread/ThreadUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/thread/ThreadUtil.java
@@ -27,7 +27,6 @@ public class ThreadUtil {
 	 *    1. 初始线程数为corePoolSize指定的大小
 	 *    2. 没有最大线程数限制
 	 *    3. 默认使用LinkedBlockingQueue，默认队列大小为1024
-	 *    4. 当运行线程大于corePoolSize放入队列，队列满后抛出异常
 	 * </pre>
 	 *
 	 * @param corePoolSize 同时执行的线程数大小
diff --git a/hutool-core/src/main/java/cn/hutool/core/util/IdUtil.java b/hutool-core/src/main/java/cn/hutool/core/util/IdUtil.java
index 9e9167b72..6ac904e3a 100644
--- a/hutool-core/src/main/java/cn/hutool/core/util/IdUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/util/IdUtil.java
@@ -1,6 +1,7 @@
 package cn.hutool.core.util;
 
 import cn.hutool.core.exceptions.UtilException;
+import cn.hutool.core.lang.Assert;
 import cn.hutool.core.lang.ObjectId;
 import cn.hutool.core.lang.Singleton;
 import cn.hutool.core.lang.Snowflake;
@@ -203,8 +204,17 @@ public class IdUtil {
 	 * @since 5.7.3
 	 */
 	public static long getDataCenterId(long maxDatacenterId) {
+		Assert.isTrue(maxDatacenterId > 0, "maxDatacenterId must be > 0");
+		if(maxDatacenterId == Long.MAX_VALUE){
+			maxDatacenterId -= 1;
+		}
 		long id = 1L;
-		final byte[] mac = NetUtil.getLocalHardwareAddress();
+		byte[] mac = null;
+		try{
+			mac = NetUtil.getLocalHardwareAddress();
+		}catch (UtilException ignore){
+			// ignore
+		}
 		if (null != mac) {
 			id = ((0x000000FF & (long) mac[mac.length - 2])
 					| (0x0000FF00 & (((long) mac[mac.length - 1]) << 8))) >> 6;
diff --git a/hutool-core/src/test/java/cn/hutool/core/util/IdUtilTest.java b/hutool-core/src/test/java/cn/hutool/core/util/IdUtilTest.java
index b68d2f20b..f0dd9c5ab 100644
--- a/hutool-core/src/test/java/cn/hutool/core/util/IdUtilTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/util/IdUtilTest.java
@@ -137,7 +137,8 @@ public class IdUtilTest {
 
 	@Test
 	public void getDataCenterIdTest(){
+		//按照mac地址算法拼接的算法，maxDatacenterId应该是0xffffffffL>>6-1此处暂时按照0x7fffffffffffffffL-1，防止最后取模溢出
 		final long dataCenterId = IdUtil.getDataCenterId(Long.MAX_VALUE);
-		Assert.assertTrue(dataCenterId > 1);
+		Assert.assertTrue(dataCenterId >= 0);
 	}
 }