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fix comment

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Looly 2024-01-15 17:12:23 +08:00
parent 9c3dc22a37
commit 5567b4e3fc
2 changed files with 8 additions and 9 deletions
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15
hutool-core/src/main/java/org/dromara/hutool/core/data/id/UUID.java
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@ -23,11 +23,11 @@ import java.util.Random;
/**
* 提供通用唯一识别码（universally unique identifier）（UUID）实现，UUID表示一个128位的值。<br>
* 此类拷贝自java.util.UUID，用于生成不带-的UUID字符串
* <p>
* <h3>Generate UUID 不同版本UUID在线生成和参考：<a href="https://idtools.co/uuid/v4">Generate UUID</a></h3>
* <h3>UUID 的 5 个版本：<a href="https://juejin.cn/post/7297225106203689001">UUID 5 version 区别</a></h3>
* <h3>UUID代码实现参考：<a href="https://github.com/sake/uuid4j">sake/uuid4j实现</a></h3>
* </p>
* <ul>
* <li>Generate UUID 不同版本UUID在线生成和参考：<a href="https://idtools.co/uuid/v4">Generate UUID</a></li>
* <li>UUID 的 5 个版本：<a href="https://juejin.cn/post/7297225106203689001">UUID 5 version 区别</a></li>
* <li>UUID代码实现参考：<a href="https://github.com/sake/uuid4j">sake/uuid4j实现</a></li>
* </ul>
* <ul>
* <li>UUIDv1: Structure,形如：xxxxxxxx-xxxx-1xxx-yxxx-xxxxxxxxxxxx，UUID v1 表示为 32 个字符的十六进制字符串，分五组显示，并用连字符分隔; <strong>基于时间</strong>，同时访问主机的 MAC 地址； generate a time based UUID (V1)</li>
* <li>UUIDv2: Structure,形如：xxxxxxxx-xxxx-2xxx-yxxx-xxxxxxxxxxxx，UUID v2 的结构与其他 UUID 相同;需要<strong> DCE–分布式计算机环境 </strong>生成唯一标识符;由于基于计算主机名，有隐私风险，未大规模使用</li>
@ -62,7 +62,6 @@ import java.util.Random;
*
* <p>
* variant 字段包含一个表示 UUID 布局的值。以上描述的位布局仅在 UUID 的 variant 值为 2（表示 Leach-Salz 变体）时才有效。 *
* <p>
*
* @since 4.1.11
*/
@ -151,7 +150,7 @@ public class UUID implements java.io.Serializable, Comparable<UUID> {
randomBytes[6] &= 0x0f; /* clear version */
randomBytes[6] |= 0x40; /* set to version 4 */
randomBytes[8] &= 0x3f; /* clear variant */
randomBytes[8] |= 0x80; /* set to IETF variant */
randomBytes[8] |= (byte) 0x80; /* set to IETF variant */
return new UUID(randomBytes);
}
@ -173,7 +172,7 @@ public class UUID implements java.io.Serializable, Comparable<UUID> {
md5Bytes[6] &= 0x0f; /* clear version */
md5Bytes[6] |= 0x30; /* set to version 3 */
md5Bytes[8] &= 0x3f; /* clear variant */
md5Bytes[8] |= 0x80; /* set to IETF variant */
md5Bytes[8] |= (byte) 0x80; /* set to IETF variant */
return new UUID(md5Bytes);
}

2
hutool-core/src/test/java/org/dromara/hutool/core/data/id/UUIDTest.java
View File

@ -30,7 +30,7 @@ public class UUIDTest {
final Set<String> set = new ConcurrentHashSet<>(100);
ThreadUtil.concurrencyTest(100, ()-> set.add(UUID.fastUUID().toString()));
Assertions.assertEquals(100, set.size());
Console.log(set);
//Console.log(set);
}