| 提交 | 用户 | 时间 | ||
| fd2207 | 1 | package com.jcdm.common.utils.uuid; |
| 懒 | 2 | |
| 3 | import java.util.concurrent.atomic.AtomicInteger; | |
| 4 | import com.jcdm.common.utils.DateUtils; | |
| 5 | import com.jcdm.common.utils.StringUtils; | |
| 6 | ||
| 7 | /** | |
| 8 | * @author jc 序列生成类 | |
| 9 | */ | |
| 10 | public class Seq | |
| 11 | { | |
| 12 | // 通用序列类型 | |
| 13 | public static final String commSeqType = "COMMON"; | |
| 14 | ||
| 15 | // 上传序列类型 | |
| 16 | public static final String uploadSeqType = "UPLOAD"; | |
| 17 | ||
| 18 | // 通用接口序列数 | |
| 19 | private static AtomicInteger commSeq = new AtomicInteger(1); | |
| 20 | ||
| 21 | // 上传接口序列数 | |
| 22 | private static AtomicInteger uploadSeq = new AtomicInteger(1); | |
| 23 | ||
| 24 | // 机器标识 | |
| 25 | private static final String machineCode = "A"; | |
| 26 | ||
| 27 | /** | |
| 28 | * 获取通用序列号 | |
| 29 | * | |
| 30 | * @return 序列值 | |
| 31 | */ | |
| 32 | public static String getId() | |
| 33 | { | |
| 34 | return getId(commSeqType); | |
| 35 | } | |
| 36 | ||
| 37 | /** | |
| 38 | * 默认16位序列号 yyMMddHHmmss + 一位机器标识 + 3长度循环递增字符串 | |
| 39 | * | |
| 40 | * @return 序列值 | |
| 41 | */ | |
| 42 | public static String getId(String type) | |
| 43 | { | |
| 44 | AtomicInteger atomicInt = commSeq; | |
| 45 | if (uploadSeqType.equals(type)) | |
| 46 | { | |
| 47 | atomicInt = uploadSeq; | |
| 48 | } | |
| 49 | return getId(atomicInt, 3); | |
| 50 | } | |
| 51 | ||
| 52 | /** | |
| 53 | * 通用接口序列号 yyMMddHHmmss + 一位机器标识 + length长度循环递增字符串 | |
| 54 | * | |
| 55 | * @param atomicInt 序列数 | |
| 56 | * @param length 数值长度 | |
| 57 | * @return 序列值 | |
| 58 | */ | |
| 59 | public static String getId(AtomicInteger atomicInt, int length) | |
| 60 | { | |
| 61 | String result = DateUtils.dateTimeNow(); | |
| 62 | result += machineCode; | |
| 63 | result += getSeq(atomicInt, length); | |
| 64 | return result; | |
| 65 | } | |
| 66 | ||
| 67 | /** | |
| 68 | * 序列循环递增字符串[1, 10 的 (length)幂次方), 用0左补齐length位数 | |
| 69 | * | |
| 70 | * @return 序列值 | |
| 71 | */ | |
| 72 | private synchronized static String getSeq(AtomicInteger atomicInt, int length) | |
| 73 | { | |
| 74 | // 先取值再+1 | |
| 75 | int value = atomicInt.getAndIncrement(); | |
| 76 | ||
| 77 | // 如果更新后值>=10 的 (length)幂次方则重置为1 | |
| 78 | int maxSeq = (int) Math.pow(10, length); | |
| 79 | if (atomicInt.get() >= maxSeq) | |
| 80 | { | |
| 81 | atomicInt.set(1); | |
| 82 | } | |
| 83 | // 转字符串，用0左补齐 | |
| 84 | return StringUtils.padl(value, length); | |
| 85 | } | |
| 86 | } | |
