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89 lines
2.3 KiB
Java
89 lines
2.3 KiB
Java
/*
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* Copyright 2025 mingliqiye
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* ProjectName mingli-utils
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* ModuleName mingli-utils.main
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* CurrentFile MysqlUUIDv1.java
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* LastUpdate 2025-09-09 08:37:33
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* UpdateUser MingLiPro
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*/
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package com.mingliqiye.utils.uuid;
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import lombok.var;
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/**
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* MySQL UUID格式与标准UUID格式相互转换工具类
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* <p>
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* MySQL使用不同的字节顺序存储UUID，此类提供了在MySQL格式和标准UUID格式之间转换的方法
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* @author MingLiPro
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*/
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public class MysqlUUIDv1 {
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/**
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* 将标准UUID格式转换为MySQL格式的UUID
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*
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* @param uuid 标准UUID格式的字节数组，长度必须为16字节
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* @return MySQL格式的UUID字节数组，长度为16字节
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*/
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public static byte[] uuidToMysql(byte[] uuid) {
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var reuuid = new byte[16];
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// 转换时间戳低位部分
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reuuid[4] = uuid[0];
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reuuid[5] = uuid[1];
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reuuid[6] = uuid[2];
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reuuid[7] = uuid[3];
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// 转换时间戳中位部分
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reuuid[2] = uuid[4];
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reuuid[3] = uuid[5];
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// 转换时间戳高位部分
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reuuid[0] = uuid[6];
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reuuid[1] = uuid[7];
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// 复制时钟序列和节点标识部分
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System.arraycopy(uuid, 8, reuuid, 8, 8);
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return reuuid;
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}
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/**
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* 将MySQL格式的UUID转换为标准UUID格式
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*
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* @param uuid MySQL格式的UUID字节数组，长度必须为16字节
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* @return 标准UUID格式的字节数组，长度为16字节
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*/
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public static byte[] mysqlToUuid(byte[] uuid) {
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var reuuid = new byte[16];
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// 转换时间戳高位部分
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reuuid[6] = uuid[0];
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reuuid[7] = uuid[1];
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// 转换时间戳中位部分
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reuuid[4] = uuid[2];
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reuuid[5] = uuid[3];
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// 转换时间戳低位部分
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reuuid[0] = uuid[4];
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reuuid[1] = uuid[5];
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reuuid[2] = uuid[6];
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reuuid[3] = uuid[7];
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// 复制时钟序列和节点标识部分
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System.arraycopy(uuid, 8, reuuid, 8, 8);
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return reuuid;
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}
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}
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