常用代码汇总

省市区详细地址拼接，排除NULL

String address = Stream.of(province,city,area,adress).filter(s -> s != null && !s.isEmpty()).collect(Collectors.joining());

根据当前日期计算今天是周几，返回对应的数字 1 ~ 7

private int calcDateNumber() {
    // 获取当前日期
    LocalDate today = LocalDate.now();
    // 获取当天是星期几
    DayOfWeek dow = today.getDayOfWeek();
    // 获取星期几对应的数字
    int dayOfWeekNumber = dow.getValue();
    return dayOfWeekNumber;
}