工具

/**
 * 对手机号码做掩码
 * @param mobile
 * @return
 */
public static String strMobileMask(String mobile){
    StringBuffer buffer= new StringBuffer();
    return buffer.append(mobile.substring(0,4)).append("****").append(mobile.substring(9)).toString();
}

/**
 * 对身份证号码做掩码
 * @param idCarNo
 * @return
 */
public static String strIDCardNoMask(String idCarNo){
    StringBuffer buffer = new StringBuffer();
    return buffer.append(idCarNo.substring(0,6)).append("***********").append(idCarNo.substring(17)).toString();
}

/**
 * 获取Ip地址
 * @param request
 * @return
 */
public static String getIpAdrress(HttpServletRequest request) {
    String ip = request.getHeader("X-Forwarded-For");
    if(StringUtils.isNotEmpty(ip) && !"unKnown".equalsIgnoreCase(ip)){
        //多次反向代理后会有多个ip值，第一个ip才是真实ip
        int index = ip.indexOf(",");
        if(index != -1){
            return ip.substring(0,index);
        }else{
            return ip;
        }
    }
    ip = request.getHeader("X-Real-IP");
    if(StringUtils.isNotEmpty(ip) && !"unKnown".equalsIgnoreCase(ip)){
        return ip;
    }
    return request.getRemoteAddr();
}

/**
 * @Description 判断是多少时间以前，参数格式：date类型2018-12-29 14:35:35
 * @Date 16:19 2018/12/2
 * @Param
 **/
public static String formatBefore(Date date) {
    long delta = new Date().getTime() - date.getTime();
    if (delta < 1L * ONE_MINUTE) {
        long seconds = toSeconds(delta);
        return (seconds <= 0 ? 1 : seconds) + ONE_SECOND_AGO;
    }
    if (delta < 45L * ONE_MINUTE) {
        long minutes = toMinutes(delta);
        return (minutes <= 0 ? 1 : minutes) + ONE_MINUTE_AGO;
    }
    if (delta < 24L * ONE_HOUR) {
        long hours = toHours(delta);
        return (hours <= 0 ? 1 : hours) + ONE_HOUR_AGO;
    }
    if (delta < 48L * ONE_HOUR) {
        return "昨天";
    }
    if (delta < 30L * ONE_DAY) {
        long days = toDays(delta);
        return (days <= 0 ? 1 : days) + ONE_DAY_AGO;
    }
    if (delta < 12L * 4L * ONE_WEEK) {
        long months = toMonths(delta);
        return (months <= 0 ? 1 : months) + ONE_MONTH_AGO;
    } else {
        long years = toYears(delta);
        return (years <= 0 ? 1 : years) + ONE_YEAR_AGO;
    }
}
//可以把20190919103200的数值转换
public static String formatBefore(String  dateStr) {
    return formatBefore(getDate(formatDateByStr(dateStr)));
}
private static long toSeconds(long date) {
    return date / 1000L;
}
private static long toMinutes(long date) {
    return toSeconds(date) / 60L;
}
private static long toHours(long date) {
    return toMinutes(date) / 60L;
}
private static long toDays(long date) {
    return toHours(date) / 24L;
}
private static long toMonths(long date) {
    return toDays(date) / 30L;
}
private static long toYears(long date) {
    return toMonths(date) / 365L;
}