package com.dobbinsoft.fw.core.util;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import java.util.UUID;
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import java.util.concurrent.atomic.AtomicInteger;
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/**
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* Created by rize on 2019/7/1.
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*/
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public class GeneratorUtil {
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private static AtomicInteger orderIdCount = new AtomicInteger();
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private static final SimpleDateFormat ORDER_ID_FORMAT = new SimpleDateFormat("yyyyMMHHmmss");
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public static final String genSalt() {
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return genUUId().substring(0, 7);
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}
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public static String genSixVerifyCode() {
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String time = System.nanoTime() + "";
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return time.substring(time.length() - 6);
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}
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public static String genSessionId() {
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return UUID.randomUUID().toString().replace("-","").toUpperCase();
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}
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public static String genOrderId(String machineNo, String env) {
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int i = orderIdCount.incrementAndGet() % 1000;
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if (i < 1000)
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i += 1000;
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return env + machineNo + ORDER_ID_FORMAT.format(new Date()) + i;
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}
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public static String genFileName(){
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return UUID.randomUUID().toString().replaceAll("-", "");
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}
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public static String genUUId() {
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return UUID.randomUUID().toString().replace("-", "");
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}
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}
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