发票流水号生成方式

// 设置初始化值为5
private static AtomicInteger count = new AtomicInteger(5);

// 生成发票流水号的8位年月日与4位序列号
private static String issueInvoiceSerival(){
    Timestamp curDate = new Timestamp(System.currentTimeMillis());
    String[] str = curDate.toString().split(" ")[0].split("-");
    String dateTemp = str[0] + str[1] + str [2];
    return dateTemp + String.format("%04d", count.incrementAndGet());
}



// Java之四位序列号生成方式
String.format("%04d", count.incrementAndGet());

 

https://www.cnblogs.com/zhaoyan001/p/8885360.html】