com.mmj.app.common.util.SerialNumGenerator.java Source code

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Here is the source code for com.mmj.app.common.util.SerialNumGenerator.java

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/*
 * Copyright 2011-2016 MSUN.com All right reserved. This software is the confidential and proprietary information of
 * MSUN.com ("Confidential Information"). You shall not disclose such Confidential Information and shall use it only in
 * accordance with the terms of the license agreement you entered into with MSUN.com.
 */
package com.mmj.app.common.util;

import java.util.Date;
import java.util.Random;

import org.apache.commons.lang.StringUtils;

/**
 * ???,??
 * 
 * <pre>
 * ??
 *      0??F:?,C:account?T:tour?)
 *      [1,6]??[7,?]????
 *      2014829100???
 *      201408291000
 * </pre>
 * 
 * @author zxc Aug 8, 2014 2:04:45 PM
 */
public class SerialNumGenerator {

    public static String c_prefix = "C";
    public static String t_prefix = "T";
    public static String l_prefix = "L";
    public static String p_prefix = "P";

    private static final String DATEFORMATTOR_KEY = "yyyyMMdd";

    public static String createTradeNo(Long id) {
        return createSerNo(id, c_prefix);
    }

    public synchronized static String createSerNo(Long id, String prefix) {
        String middle = DateViewTools.format(new Date(), DATEFORMATTOR_KEY);
        String num = getSuffix(id);
        return prefix + middle + num;
    }

    public static String Random30String() {
        return RandomString(30);
    }

    /** ? */
    public static String RandomString(int length) {
        String str = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
        Random random = new Random();
        StringBuffer buf = new StringBuffer();
        for (int i = 0; i < length; i++) {
            int num = random.nextInt(62);
            buf.append(str.charAt(num));
        }
        return buf.toString();
    }

    public static String RandomNum(int length) {
        String str = "0123456789";
        Random random = new Random();
        StringBuffer buf = new StringBuffer();
        for (int i = 0; i < length; i++) {
            int num = random.nextInt(10);
            buf.append(str.charAt(num));
        }
        return buf.toString();
    }

    private static String getSuffix(Long id) {
        Long num = 1l;
        if (id != null) {
            num = id % 100000;// id??
        }

        Random random = new Random();
        StringBuffer suffixBuffer = new StringBuffer();
        suffixBuffer.append(String.valueOf(num)).append(random.nextInt(1000));
        return StringUtils.leftPad(suffixBuffer.toString(), 8, '0');
    }

    public static void main(String[] args) {
        for (long i = 1; i < 1000; i++) {
            System.out.println(RandomNum(4));
            System.out.println(createTradeNo(i));
        }
    }
}