工具类Common

这个工具类，主要是包含一些数字和字符串转换，Json转换等等

using System;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text.RegularExpressions;
using System.Web;
using Newtonsoft.Json;

namespace SEAEYE.WEB2._0.component
{
    /// <summary>
    /// CreateTime：2017-06-17
    /// Author：
    /// Desc： 工具类
    /// </summary>
    public static class Common
    {
        /// <summary>
        /// 获取session的用户信息
        /// </summary>
        /// <returns></returns>
        public static T GetSession<T>(string key) where T : new()
        {
            T t = new T();
            if (HttpContext.Current.Session[key] != null)
                t = (T)HttpContext.Current.Session[key];
            return t;
        }

        /// <summary>
        ///  转换成 json
        /// </summary>
        /// <param name="obj"></param>
        /// <returns></returns>
        public static string ToJson(this object obj)
        {
            return JsonConvert.SerializeObject(obj);
        }

        /// <summary>
        /// string 数组 转 int
        /// </summary>
        /// <param name="strs"></param>
        /// <returns></returns>
        public static int[] StrArrToIntArr(string[] strs)
        {
            return Array.ConvertAll<string, int>(strs, delegate (string s) { return int.Parse(s); });
        }

        /// <summary>
        /// string型转换为int型
        /// </summary>
        /// <param name="strValue">要转换的字符串</param>
        /// <returns>转换后的int类型结果.如果要转换的字符串是非数字,则返回0.</returns>
        public static int StrToInt(object strValue)
        {
            return StrToInt(strValue, 0);
        }

        /// <summary>
        /// string型转换为int型
        /// </summary>
        /// <param name="strValue">要转换的字符串</param>
        /// <param name="defValue">缺省值</param>
        /// <returns>转换后的int类型结果</returns>
        public static int StrToInt(object strValue, int defValue)
        {
            if (strValue == null || Convert.IsDBNull(strValue) || strValue.ToString() == string.Empty)
            {
                return defValue;
            }

            string val = strValue.ToString();
            if (val.IndexOf(".", StringComparison.Ordinal) >= 0)
            {
                val = val.Split('.')[0];
            }
            int intValue;
            if (int.TryParse(val, out intValue))
            {
                return intValue;
            }
            return defValue;
        }

        /// <summary>
        /// 过滤标签,正则匹配时使用非贪婪模式 
        /// </summary>
        /// <param name="conStr">待处理的文本数据</param>
        /// <param name="tagName">标签名称如,html,Script等</param>
        /// <param name="fType">过滤方式,可以取(1|2|3)
        /// 1:是单个标签如img等,
        /// 2:表示配对出现的标签如div等将清除此标签以及标签内的全部文本,
        /// 3:表示也是针对配对出现的标签,但是保留标签内的内容.
        /// </param>
        /// <returns></returns>
        public static string CollectionFilter(string conStr, string tagName, int fType)
        {
            if (string.IsNullOrEmpty(conStr))
                return string.Empty;

            string input = conStr;
            switch (fType)
            {
                case 1:
                    return Regex.Replace(input, "<" + tagName + "([^>])*>", "", RegexOptions.IgnoreCase);

                case 2:
                    return Regex.Replace(input, "<" + tagName + "([^>])*>.*?</" + tagName + "([^>])*>", "", RegexOptions.IgnoreCase);

                case 3:
                    return Regex.Replace(Regex.Replace(input, "<" + tagName + "([^>])*>", "", RegexOptions.IgnoreCase), "</" + tagName + "([^>])*>", "", RegexOptions.IgnoreCase);
            }
            return input;
        }


        /// <summary>
        /// <summary>
        /// 自定义的替换字符串函数
        /// </summary>
        /// </summary>
        /// <param name="sourceString"></param>
        /// <param name="searchString"></param>
        /// <param name="replaceString"></param>
        /// <param name="isCaseInsensetive">true 为指定不区分大小写的匹配。</param>
        /// <returns></returns>
        public static string ReplaceString(string sourceString, string searchString, string replaceString, bool isCaseInsensetive)
        {
            return Regex.Replace(sourceString, Regex.Escape(searchString), replaceString, isCaseInsensetive ? RegexOptions.IgnoreCase : RegexOptions.None);
        }


        /// <summary>
        /// 随机文件名称
        /// </summary>
        /// <param name="fileName"></param>
        /// <returns></returns>
        public static string GetRandomFileName(string fileName)
        {
            if (string.IsNullOrEmpty(fileName)) return "";
            System.Threading.Thread.Sleep(100);
            string fileType = fileName.Substring(fileName.LastIndexOf(".", StringComparison.Ordinal));
            #region 暂时弃用
            //var rand = new Random();
            //DateTime now = DateTime.Now;
            //string str = "";
            //str += now.Year.ToString();
            //str += now.Month.ToString();
            //str += now.Day.ToString();
            //str += now.Hour.ToString();
            //str += now.Minute.ToString();
            //str += now.Second.ToString();
            //str += rand.Next(0, 1000);
            #endregion
         
            Guid guid = Guid.NewGuid();
            return guid + fileType;
        }

        /// <summary>
        /// 随机文件名称
        /// </summary>
        /// <param name="fileName"></param>
        /// <param name="nguid"></param>
        /// <returns></returns>
        public static string GetRandomFileName(string fileName,out string nguid)
        {
            nguid = string.Empty;
            if (string.IsNullOrEmpty(fileName)) return "";
            System.Threading.Thread.Sleep(100);
            string fileType = fileName.Substring(fileName.LastIndexOf(".", StringComparison.Ordinal));
            #region 暂时弃用
            //var rand = new Random();
            //DateTime now = DateTime.Now;
            //string str = "";
            //str += now.Year.ToString();
            //str += now.Month.ToString();
            //str += now.Day.ToString();
            //str += now.Hour.ToString();
            //str += now.Minute.ToString();
            //str += now.Second.ToString();
            //str += rand.Next(0, 1000);
            #endregion

            Guid guid = Guid.NewGuid();
            nguid = guid.ToString();
            return guid + fileType;
        }

        /// <summary>
        /// string list -> int list
        /// </summary>
        /// <param name="list"></param>
        /// <returns></returns>
        public static IList<int> ToIntList(this IList<string> list)
        {
            return list.Select(int.Parse).ToList();
        }

        /// <summary>
        /// int list -> string list
        /// </summary>
        /// <param name="list"></param>
        /// <returns></returns>
        public static IList<string> ToStringList(this IList<string> list)
        {
            return list.Select(x=>x.ToString(CultureInfo.InvariantCulture)).ToList();
        }
    }
}

using System;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text.RegularExpressions;
using System.Web;
using Newtonsoft.Json;

namespace SEAEYE.WEB2._0.component
{
    /// <summary>
    /// CreateTime：2017-06-17
    /// Author：
    /// Desc： 工具类
    /// </summary>
    public static class Common
    {
        /// <summary>
        /// 获取session的用户信息
        /// </summary>
        /// <returns></returns>
        public static T GetSession<T>(string key) where T : new()
        {
            T t = new T();
            if (HttpContext.Current.Session[key] != null)
                t = (T)HttpContext.Current.Session[key];
            return t;
        }

        /// <summary>
        ///  转换成 json
        /// </summary>
        /// <param name="obj"></param>
        /// <returns></returns>
        public static string ToJson(this object obj)
        {
            return JsonConvert.SerializeObject(obj);
        }

        /// <summary>
        /// string 数组 转 int
        /// </summary>
        /// <param name="strs"></param>
        /// <returns></returns>
        public static int[] StrArrToIntArr(string[] strs)
        {
            return Array.ConvertAll<string, int>(strs, delegate (string s) { return int.Parse(s); });
        }

        /// <summary>
        /// string型转换为int型
        /// </summary>
        /// <param name="strValue">要转换的字符串</param>
        /// <returns>转换后的int类型结果.如果要转换的字符串是非数字,则返回0.</returns>
        public static int StrToInt(object strValue)
        {
            return StrToInt(strValue, 0);
        }

        /// <summary>
        /// string型转换为int型
        /// </summary>
        /// <param name="strValue">要转换的字符串</param>
        /// <param name="defValue">缺省值</param>
        /// <returns>转换后的int类型结果</returns>
        public static int StrToInt(object strValue, int defValue)
        {
            if (strValue == null || Convert.IsDBNull(strValue) || strValue.ToString() == string.Empty)
            {
                return defValue;
            }

            string val = strValue.ToString();
            if (val.IndexOf(".", StringComparison.Ordinal) >= 0)
            {
                val = val.Split('.')[0];
            }
            int intValue;
            if (int.TryParse(val, out intValue))
            {
                return intValue;
            }
            return defValue;
        }

        /// <summary>
        /// 过滤标签,正则匹配时使用非贪婪模式 
        /// </summary>
        /// <param name="conStr">待处理的文本数据</param>
        /// <param name="tagName">标签名称如,html,Script等</param>
        /// <param name="fType">过滤方式,可以取(1|2|3)
        /// 1:是单个标签如img等,
        /// 2:表示配对出现的标签如div等将清除此标签以及标签内的全部文本,
        /// 3:表示也是针对配对出现的标签,但是保留标签内的内容.
        /// </param>
        /// <returns></returns>
        public static string CollectionFilter(string conStr, string tagName, int fType)
        {
            if (string.IsNullOrEmpty(conStr))
                return string.Empty;

            string input = conStr;
            switch (fType)
            {
                case 1:
                    return Regex.Replace(input, "<" + tagName + "([^>])*>", "", RegexOptions.IgnoreCase);

                case 2:
                    return Regex.Replace(input, "<" + tagName + "([^>])*>.*?</" + tagName + "([^>])*>", "", RegexOptions.IgnoreCase);

                case 3:
                    return Regex.Replace(Regex.Replace(input, "<" + tagName + "([^>])*>", "", RegexOptions.IgnoreCase), "</" + tagName + "([^>])*>", "", RegexOptions.IgnoreCase);
            }
            return input;
        }


        /// <summary>
        /// <summary>
        /// 自定义的替换字符串函数
        /// </summary>
        /// </summary>
        /// <param name="sourceString"></param>
        /// <param name="searchString"></param>
        /// <param name="replaceString"></param>
        /// <param name="isCaseInsensetive">true 为指定不区分大小写的匹配。</param>
        /// <returns></returns>
        public static string ReplaceString(string sourceString, string searchString, string replaceString, bool isCaseInsensetive)
        {
            return Regex.Replace(sourceString, Regex.Escape(searchString), replaceString, isCaseInsensetive ? RegexOptions.IgnoreCase : RegexOptions.None);
        }


        /// <summary>
        /// 随机文件名称
        /// </summary>
        /// <param name="fileName"></param>
        /// <returns></returns>
        public static string GetRandomFileName(string fileName)
        {
            if (string.IsNullOrEmpty(fileName)) return "";
            System.Threading.Thread.Sleep(100);
            string fileType = fileName.Substring(fileName.LastIndexOf(".", StringComparison.Ordinal));
            #region 暂时弃用
            //var rand = new Random();
            //DateTime now = DateTime.Now;
            //string str = "";
            //str += now.Year.ToString();
            //str += now.Month.ToString();
            //str += now.Day.ToString();
            //str += now.Hour.ToString();
            //str += now.Minute.ToString();
            //str += now.Second.ToString();
            //str += rand.Next(0, 1000);
            #endregion
         
            Guid guid = Guid.NewGuid();
            return guid + fileType;
        }

        /// <summary>
        /// 随机文件名称
        /// </summary>
        /// <param name="fileName"></param>
        /// <param name="nguid"></param>
        /// <returns></returns>
        public static string GetRandomFileName(string fileName,out string nguid)
        {
            nguid = string.Empty;
            if (string.IsNullOrEmpty(fileName)) return "";
            System.Threading.Thread.Sleep(100);
            string fileType = fileName.Substring(fileName.LastIndexOf(".", StringComparison.Ordinal));
            #region 暂时弃用
            //var rand = new Random();
            //DateTime now = DateTime.Now;
            //string str = "";
            //str += now.Year.ToString();
            //str += now.Month.ToString();
            //str += now.Day.ToString();
            //str += now.Hour.ToString();
            //str += now.Minute.ToString();
            //str += now.Second.ToString();
            //str += rand.Next(0, 1000);
            #endregion

            Guid guid = Guid.NewGuid();
            nguid = guid.ToString();
            return guid + fileType;
        }

        /// <summary>
        /// string list -> int list
        /// </summary>
        /// <param name="list"></param>
        /// <returns></returns>
        public static IList<int> ToIntList(this IList<string> list)
        {
            return list.Select(int.Parse).ToList();
        }

        /// <summary>
        /// int list -> string list
        /// </summary>
        /// <param name="list"></param>
        /// <returns></returns>
        public static IList<string> ToStringList(this IList<string> list)
        {
            return list.Select(x=>x.ToString(CultureInfo.InvariantCulture)).ToList();
        }
    }
}