znyc.cloudcar.admin.api/Znyc.Cloudcar.Admin.Commons/Helpers/StringHelper.cs

using Newtonsoft.Json.Linq;
using System;
using System.Text;
using System.Text.RegularExpressions;
using Znyc.Cloudcar.Admin.Commons.Enums;

namespace Znyc.Cloudcar.Admin.Commons.Helpers
{
    /// <summary>
    ///     字符串帮助类
    /// </summary>
    public class StringHelper
    {
        private static readonly char[] _constant =
        {
            '0', '1', '2', '3', '4', '5', '6', '7', '8', '9'
        };

        /// <summary>
        ///     生成随机字符串，默认32位
        /// </summary>
        /// <param name="length">随机数长度</param>
        /// <returns></returns>
        public static string GenerateRandom(int length = 32)
        {
            StringBuilder newRandom = new StringBuilder();
            Random rd = new Random();
            for (int i = 0; i < length; i++)
            {
                newRandom.Append(_constant[rd.Next(_constant.Length)]);
            }

            return newRandom.ToString();
        }

        /// <summary>
        ///     生成随机字符串，只包含数字
        /// </summary>
        /// <param name="length"></param>
        /// <returns></returns>
        public static string GenerateRandomNumber(int length = 6)
        {
            StringBuilder newRandom = new StringBuilder();
            Random rd = new Random();
            for (int i = 0; i < length; i++)
            {
                newRandom.Append(_constant[rd.Next(10)]);
            }

            return newRandom.ToString();
        }

        /// <summary>
        /// </summary>
        /// <param name="str"></param>
        /// <param name="obj"></param>
        /// <returns></returns>
        public static string Format(string str, object obj)
        {
            if (string.IsNullOrEmpty(str))
            {
                return str;
            }

            string s = str;
            if (obj.GetType().Name == "JObject")
            {
                foreach (System.Collections.Generic.KeyValuePair<string, JToken> item in (JObject)obj)
                {
                    string k = item.Key;
                    string v = item.Value.ToString();
                    s = Regex.Replace(s, "\\{" + k + "\\}", v, RegexOptions.IgnoreCase);
                }
            }
            else
            {
                foreach (System.Reflection.PropertyInfo p in obj.GetType().GetProperties())
                {
                    string xx = p.Name;
                    string yy = p.GetValue(obj).ToString();
                    s = Regex.Replace(s, "\\{" + xx + "\\}", yy, RegexOptions.IgnoreCase);
                }
            }

            return s;
        }

        /// <summary>
        ///     隐藏手机号
        /// </summary>
        /// <param name="Phone"></param>
        /// <returns></returns>
        public static string ConvertPhoneNo(string Phone)
        {
            return Regex.Replace(Phone, "(\\d{3})\\d{4}(\\d{4})", "$1****$2");
        }

        /// <summary>
        ///     隐藏身份证号
        /// </summary>
        /// <param name="idCard"></param>
        /// <returns></returns>
        public static string ConvertIdCard(string idCard)
        {
            return Regex.Replace(idCard, "(\\d{6})\\d{8}(\\w{4})", "$1********$2");
        }

        /// <summary>
        ///     生成流水号
        /// </summary>
        /// <param name="productType"></param>
        /// <param name="IndustryId"></param>
        /// <param name="JobId"></param>
        /// <returns></returns>
        public static string GetSerialNumber(ProductTypeEnum productType, long IndustryId, long JobId)
        {
            return DateTime.Now.ToString("yyyyMMddhhmmss"); // + productType.ToInt() + IndustryId + JobId;
        }

        /// <summary>
        /// </summary>
        /// <param name="phone"></param>
        /// <returns></returns>
        public static string ChineseMainlandForPhone(string phone)
        {
            return string.Format("+86{0}", phone);
        }

        /// <summary>
        ///     计算年龄
        /// </summary>
        /// <param name="birthDate"></param>
        /// <returns></returns>
        public static int? GetAgeByBirthDate(DateTime? birthDate)
        {
            int? age = 0;
            if (!birthDate.ToString().Equals("0001/1/1 0:00:00"))
            {
                DateTime now = DateTime.Now;
                age = now.Year - birthDate?.Year;
                if (now.Month < birthDate?.Month || now.Month == birthDate?.Month && now.Day < birthDate?.Day)
                {
                    age--;
                }
            }

            return age < 0 ? 0 : age;
        }

        /// <summary>
        ///     计算百分比
        /// </summary>
        /// <param name="divisor">除数</param>
        /// <param name="dividend">被除数</param>
        /// <returns></returns>
        public static decimal GetPercent(decimal divisor, decimal dividend)
        {
            if (divisor == 0 || dividend == 0)
            {
                return Convert.ToDecimal(0);
            }

            return Math.Floor(Math.Round(decimal.Parse((divisor / dividend).ToString("0.000")), 2) * 100);
        }
    }
}