package cn.huge.base.common.utils;
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import org.apache.commons.lang3.StringUtils;
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import java.nio.ByteBuffer;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import java.util.Random;
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import java.util.UUID;
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/**
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* @title: ID生成工具
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* @description: ID生成工具
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* @company: hugeinfo
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* @author: liyj
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* @time: 2021-11-05 16:51:48
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* @version: 1.0.0
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*/
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public class IdUtils {
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/**
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* 新建编号
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*/
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public static String NEW_ID = "new";
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/**
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* 时间Id统计常量
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*/
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private static int COUNT_NUM = 1000;
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/**
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* 时间Id统计常量，常量前缀
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*/
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private static int SIGN_COUNT_NUM = 1000;
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/**
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* 时间Id统计常量，常量后缀
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*/
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private static int COUNT_NUM_SIGN = 1000;
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/**
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* UUID随机字符串，有"-"
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* @return String
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*/
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public static String uuid()
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{
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return UUID.randomUUID().toString();
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}
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/**
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* UUID随机字符串，无"-"
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* @return String
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*/
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public static String uuid2()
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{
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return UUID.randomUUID().toString().replaceAll("-", "");
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}
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/**
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* UUID随机字符串
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* @return String
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*/
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public static String uuid3()
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{
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long val = ByteBuffer.wrap(uuid2().getBytes()).getLong();
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return Long.toString(val, 36);
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}
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/**
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* 获取带有的时间Id，后四位随机数
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* @return String
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*/
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public synchronized static String getTimeRandomId(){
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String str = (new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")).format(new Date());
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String randomNum = getRandomNum(4);
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String timeId = str.replaceAll("-","").replaceAll(":","").replaceAll(" ","") + randomNum;
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timeId = timeId.substring(2,timeId.length());
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return timeId;
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}
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//随机产生N位数字随机数
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public static String getRandomNum(int length) { //length表示生成字符串的长度
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String base = "0123456789";
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Random random = new Random();
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StringBuffer sb = new StringBuffer();
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for (int i = 0; i < length; i++) {
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int number = random.nextInt(base.length());
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sb.append(base.charAt(number));
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}
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return sb.toString();
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}
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/**
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* 判断是否为新增对象编号
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*/
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public static Boolean checkNewId(String id){
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if (StringUtils.isEmpty(id) || NEW_ID.equals(id)){
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return true;
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}else{
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return false;
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}
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}
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/**
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* 获取时间Id，后四位常量
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* @return String
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*/
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public synchronized static String getNewTimeId(){
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String timeId = getNowTime() + (COUNT_NUM++);
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if(COUNT_NUM > 99999){
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COUNT_NUM = 10000;
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}
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timeId=timeId.substring(2, timeId.length());
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return timeId;
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}
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/**
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* 获取时间Id，后四位常量
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* @return String
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*/
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public synchronized static String getNowTime(){
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SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");
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String nowTime = sdf.format(new Date());
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return nowTime;
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}
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}
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/**
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* -------------------_ooOoo_-------------------
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* ------------------o8888888o------------------
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* ------------------88" . "88------------------
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* ------------------(| -_- |)------------------
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* ------------------O\ = /O------------------
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* ---------------____/`---'\____---------------
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* -------------.' \\| |// `.-------------
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* ------------/ \\||| : |||// \------------
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* -----------/ _||||| -:- |||||- \-----------
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* -----------| | \\\ - /// | |-----------
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* -----------| \_| ''\---/'' | |-----------
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* -----------\ .-\__ `-` ___/-. /-----------
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* ---------___`. .' /--.--\ `. . __----------
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* ------."" '< `.___\_<|>_/___.' >'"".-------
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* -----| | : `- \`.;`\ _ /`;.`/ - ` : | |-----
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* -----\ \ `-. \_ __\ /__ _/ .-` / /-----
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* ======`-.____`-.___\_____/___.-`____.-'======
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* -------------------`=---='
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* ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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* ---------佛祖保佑---hugeinfo---永无BUG----------
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*/
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