87 lines
2.2 KiB
Plaintext
87 lines
2.2 KiB
Plaintext
package com.securityControl.common.core.utils.uuid;
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import java.util.concurrent.atomic.AtomicInteger;
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import com.securityControl.common.core.utils.DateUtils;
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import com.securityControl.common.core.utils.StringUtils;
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/**
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* @author czc 序列生成类
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*/
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public class Seq
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{
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// 通用序列类型
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public static final String commSeqType = "COMMON";
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// 上传序列类型
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public static final String uploadSeqType = "UPLOAD";
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// 通用接口序列数
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private static AtomicInteger commSeq = new AtomicInteger(1);
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// 上传接口序列数
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private static AtomicInteger uploadSeq = new AtomicInteger(1);
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// 机器标识
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private static String machineCode = "A";
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/**
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* 获取通用序列号
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*
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* @return 序列值
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*/
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public static String getId()
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{
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return getId(commSeqType);
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}
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/**
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* 默认16位序列号 yyMMddHHmmss + 一位机器标识 + 3长度循环递增字符串
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*
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* @return 序列值
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*/
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public static String getId(String type)
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{
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AtomicInteger atomicInt = commSeq;
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if (uploadSeqType.equals(type))
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{
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atomicInt = uploadSeq;
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}
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return getId(atomicInt, 3);
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}
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/**
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* 通用接口序列号 yyMMddHHmmss + 一位机器标识 + length长度循环递增字符串
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*
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* @param atomicInt 序列数
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* @param length 数值长度
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* @return 序列值
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*/
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public static String getId(AtomicInteger atomicInt, int length)
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{
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String result = DateUtils.dateTimeNow();
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result += machineCode;
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result += getSeq(atomicInt, length);
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return result;
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}
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/**
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* 序列循环递增字符串[1, 10 的 (length)幂次方), 用0左补齐length位数
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*
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* @return 序列值
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*/
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private synchronized static String getSeq(AtomicInteger atomicInt, int length)
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{
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// 先取值再+1
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int value = atomicInt.getAndIncrement();
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// 如果更新后值>=10 的 (length)幂次方则重置为1
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int maxSeq = (int) Math.pow(10, length);
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if (atomicInt.get() >= maxSeq)
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{
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atomicInt.set(1);
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}
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// 转字符串，用0左补齐
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return StringUtils.padl(value, length);
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}
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}
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