//来源:http://www.cnblogs.com/yuangang/p/5477324.html
using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.IO;using System.Net;using System.Web;using System.Security.Cryptography;using System.Text.RegularExpressions;using System.Web.Script.Serialization;using System.Data;using System.Collections;using System.Runtime.Serialization.Json;using System.Configuration;using System.Reflection;namespace Common{ ////// 系统帮助类 /// public class Utils { #region 对象转换处理 ////// 判断对象是否为Int32类型的数字 /// /// ///public static bool IsNumeric(object expression) { if (expression != null) return IsNumeric(expression.ToString()); return false; } /// /// 判断对象是否为Int32类型的数字 /// /// ///public static bool IsNumeric(string expression) { if (expression != null) { string str = expression; if (str.Length > 0 && str.Length <= 11 && Regex.IsMatch(str, @"^[-]?[0-9]*[.]?[0-9]*$")) { if ((str.Length < 10) || (str.Length == 10 && str[0] == '1') || (str.Length == 11 && str[0] == '-' && str[1] == '1')) return true; } } return false; } /// /// 是否为Double类型 /// /// ///public static bool IsDouble(object expression) { if (expression != null) return Regex.IsMatch(expression.ToString(), @"^([0-9])[0-9]*(\.\w*)?$"); return false; } /// /// 将字符串转换为数组 /// /// 字符串 ///字符串数组 public static string[] GetStrArray(string str) { return str.Split(new char[',']); } ////// 将数组转换为字符串 /// /// List /// 分隔符 ///String public static string GetArrayStr(Listlist, string speater) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < list.Count; i++) { if (i == list.Count - 1) { sb.Append(list[i]); } else { sb.Append(list[i]); sb.Append(speater); } } return sb.ToString(); } /// /// object型转换为bool型 /// /// 要转换的字符串 /// 缺省值 ///转换后的bool类型结果 public static bool StrToBool(object expression, bool defValue) { if (expression != null) return StrToBool(expression, defValue); return defValue; } ////// string型转换为bool型 /// /// 要转换的字符串 /// 缺省值 ///转换后的bool类型结果 public static bool StrToBool(string expression, bool defValue) { if (expression != null) { if (string.Compare(expression, "true", true) == 0) return true; else if (string.Compare(expression, "false", true) == 0) return false; } return defValue; } ////// 将对象转换为Int32类型 /// /// 要转换的字符串 /// 缺省值 ///转换后的int类型结果 public static int ObjToInt(object expression, int defValue) { if (expression != null) return StrToInt(expression.ToString(), defValue); return defValue; } ////// 将字符串转换为Int32类型 /// /// 要转换的字符串 /// 缺省值 ///转换后的int类型结果 public static int StrToInt(string expression, int defValue) { if (string.IsNullOrEmpty(expression) || expression.Trim().Length >= 11 || !Regex.IsMatch(expression.Trim(), @"^([-]|[0-9])[0-9]*(\.\w*)?$")) return defValue; int rv; if (Int32.TryParse(expression, out rv)) return rv; return Convert.ToInt32(StrToFloat(expression, defValue)); } ////// Object型转换为decimal型 /// /// 要转换的字符串 /// 缺省值 ///转换后的decimal类型结果 public static decimal ObjToDecimal(object expression, decimal defValue) { if (expression != null) return StrToDecimal(expression.ToString(), defValue); return defValue; } ////// string型转换为decimal型 /// /// 要转换的字符串 /// 缺省值 ///转换后的decimal类型结果 public static decimal StrToDecimal(string expression, decimal defValue) { if ((expression == null) || (expression.Length > 10)) return defValue; decimal intValue = defValue; if (expression != null) { bool IsDecimal = Regex.IsMatch(expression, @"^([-]|[0-9])[0-9]*(\.\w*)?$"); if (IsDecimal) decimal.TryParse(expression, out intValue); } return intValue; } ////// Object型转换为float型 /// /// 要转换的字符串 /// 缺省值 ///转换后的int类型结果 public static float ObjToFloat(object expression, float defValue) { if (expression != null) return StrToFloat(expression.ToString(), defValue); return defValue; } ////// string型转换为float型 /// /// 要转换的字符串 /// 缺省值 ///转换后的int类型结果 public static float StrToFloat(string expression, float defValue) { if ((expression == null) || (expression.Length > 10)) return defValue; float intValue = defValue; if (expression != null) { bool IsFloat = Regex.IsMatch(expression, @"^([-]|[0-9])[0-9]*(\.\w*)?$"); if (IsFloat) float.TryParse(expression, out intValue); } return intValue; } ////// 将对象转换为日期时间类型 /// /// 要转换的字符串 /// 缺省值 ///转换后的int类型结果 public static DateTime StrToDateTime(string str, DateTime defValue) { if (!string.IsNullOrEmpty(str)) { DateTime dateTime; if (DateTime.TryParse(str, out dateTime)) return dateTime; } return defValue; } ////// 将对象转换为日期时间类型 /// /// 要转换的字符串 ///转换后的int类型结果 public static DateTime StrToDateTime(string str) { return StrToDateTime(str, DateTime.Now); } ////// 将对象转换为日期时间类型 /// /// 要转换的对象 ///转换后的int类型结果 public static DateTime ObjectToDateTime(object obj) { return StrToDateTime(obj.ToString()); } ////// 将对象转换为日期时间类型 /// /// 要转换的对象 /// 缺省值 ///转换后的int类型结果 public static DateTime ObjectToDateTime(object obj, DateTime defValue) { return StrToDateTime(obj.ToString(), defValue); } ////// 将对象转换为字符串 /// /// 要转换的对象 ///转换后的string类型结果 public static string ObjectToStr(object obj) { if (obj == null) return ""; return obj.ToString().Trim(); } #endregion #region 分割字符串 ////// 分割字符串 /// public static string[] SplitString(string strContent, string strSplit) { if (!string.IsNullOrEmpty(strContent)) { if (strContent.IndexOf(strSplit) < 0) return new string[] { strContent }; return Regex.Split(strContent, Regex.Escape(strSplit), RegexOptions.IgnoreCase); } else return new string[0] { }; } ////// 分割字符串 /// ///public static string[] SplitString(string strContent, string strSplit, int count) { string[] result = new string[count]; string[] splited = SplitString(strContent, strSplit); for (int i = 0; i < count; i++) { if (i < splited.Length) result[i] = splited[i]; else result[i] = string.Empty; } return result; } #endregion #region 截取字符串 public static string GetSubString(string p_SrcString, int p_Length, string p_TailString) { return GetSubString(p_SrcString, 0, p_Length, p_TailString); } public static string GetSubString(string p_SrcString, int p_StartIndex, int p_Length, string p_TailString) { string str = p_SrcString; byte[] bytes = Encoding.UTF8.GetBytes(p_SrcString); foreach (char ch in Encoding.UTF8.GetChars(bytes)) { if (((ch > 'ࠀ') && (ch < '一')) || ((ch > 0xac00) && (ch < 0xd7a3))) { if (p_StartIndex >= p_SrcString.Length) { return ""; } return p_SrcString.Substring(p_StartIndex, ((p_Length + p_StartIndex) > p_SrcString.Length) ? (p_SrcString.Length - p_StartIndex) : p_Length); } } if (p_Length < 0) { return str; } byte[] sourceArray = Encoding.Default.GetBytes(p_SrcString); if (sourceArray.Length <= p_StartIndex) { return str; } int length = sourceArray.Length; if (sourceArray.Length > (p_StartIndex + p_Length)) { length = p_Length + p_StartIndex; } else { p_Length = sourceArray.Length - p_StartIndex; p_TailString = ""; } int num2 = p_Length; int[] numArray = new int[p_Length]; byte[] destinationArray = null; int num3 = 0; for (int i = p_StartIndex; i < length; i++) { if (sourceArray[i] > 0x7f) { num3++; if (num3 == 3) { num3 = 1; } } else { num3 = 0; } numArray[i] = num3; } if ((sourceArray[length - 1] > 0x7f) && (numArray[p_Length - 1] == 1)) { num2 = p_Length + 1; } destinationArray = new byte[num2]; Array.Copy(sourceArray, p_StartIndex, destinationArray, 0, num2); return (Encoding.Default.GetString(destinationArray) + p_TailString); } #endregion #region 删除最后结尾的一个逗号 /// /// 删除最后结尾的一个逗号 /// public static string DelLastComma(string str) { return str.Substring(0, str.LastIndexOf(",")); } #endregion #region 删除最后结尾的指定字符后的字符 ////// 删除最后结尾的指定字符后的字符 /// public static string DelLastChar(string str, string strchar) { if (string.IsNullOrEmpty(str)) return ""; if (str.LastIndexOf(strchar) >= 0 && str.LastIndexOf(strchar) == str.Length - 1) { return str.Substring(0, str.LastIndexOf(strchar)); } return str; } #endregion #region 生成指定长度的字符串 ////// 生成指定长度的字符串,即生成strLong个str字符串 /// /// 生成的长度 /// 以str生成字符串 ///public static string StringOfChar(int strLong, string str) { string ReturnStr = ""; for (int i = 0; i < strLong; i++) { ReturnStr += str; } return ReturnStr; } #endregion #region 生成日期随机码 /// /// 生成日期随机码 /// ///public static string GetRamCode() { #region return DateTime.Now.ToString("yyyyMMddHHmmssffff"); #endregion } #endregion #region 生成随机字母或数字 /// /// 生成随机数字 /// /// 生成长度 ///public static string Number(int Length) { return Number(Length, false); } /// /// 生成随机数字 /// /// 生成长度 /// 是否要在生成前将当前线程阻止以避免重复 ///public static string Number(int Length, bool Sleep) { if (Sleep) System.Threading.Thread.Sleep(3); string result = ""; System.Random random = new Random(); for (int i = 0; i < Length; i++) { result += random.Next(10).ToString(); } return result; } /// /// 生成随机字母字符串(数字字母混和) /// /// 待生成的位数 public static string GetCheckCode(int codeCount) { string str = string.Empty; int rep = 0; long num2 = DateTime.Now.Ticks + rep; rep++; Random random = new Random(((int)(((ulong)num2) & 0xffffffffL)) | ((int)(num2 >> rep))); for (int i = 0; i < codeCount; i++) { char ch; int num = random.Next(); if ((num % 2) == 0) { ch = (char)(0x30 + ((ushort)(num % 10))); } else { ch = (char)(0x41 + ((ushort)(num % 0x1a))); } str = str + ch.ToString(); } return str; } ////// 根据日期和随机码生成订单号 /// ///public static string GetOrderNumber() { string num = DateTime.Now.ToString("yyMMddHHmmss");//yyyyMMddHHmmssms return num + Number(2).ToString(); } private static int Next(int numSeeds, int length) { byte[] buffer = new byte[length]; System.Security.Cryptography.RNGCryptoServiceProvider Gen = new System.Security.Cryptography.RNGCryptoServiceProvider(); Gen.GetBytes(buffer); uint randomResult = 0x0;//这里用uint作为生成的随机数 for (int i = 0; i < length; i++) { randomResult |= ((uint)buffer[i] << ((length - 1 - i) * 8)); } return (int)(randomResult % numSeeds); } #endregion #region 截取字符长度 /// /// 截取字符长度 /// /// 字符 /// 长度 ///public static string CutString(string inputString, int len) { if (string.IsNullOrEmpty(inputString)) return ""; inputString = DropHTML(inputString); ASCIIEncoding ascii = new ASCIIEncoding(); int tempLen = 0; string tempString = ""; byte[] s = ascii.GetBytes(inputString); for (int i = 0; i < s.Length; i++) { if ((int)s[i] == 63) { tempLen += 2; } else { tempLen += 1; } try { tempString += inputString.Substring(i, 1); } catch { break; } if (tempLen > len) break; } //如果截过则加上半个省略号 byte[] mybyte = System.Text.Encoding.Default.GetBytes(inputString); if (mybyte.Length > len) tempString += "…"; return tempString; } #endregion #region 对象<-->JSON 4.0使用 /// /// 对象转JSON /// ///对象实体 /// 内容 ///json包 public static string ObjetcToJson(T t) { try { DataContractJsonSerializer json = new DataContractJsonSerializer(typeof(T)); string szJson = ""; using (MemoryStream stream = new MemoryStream()) { json.WriteObject(stream, t); szJson = Encoding.UTF8.GetString(stream.ToArray()); } return szJson; } catch { return ""; } } /// /// Json包转对象 /// ///对象 /// json包 ///异常抛null public static object JsonToObject(string jsonstring) { object result = null; try { DataContractJsonSerializer json = new DataContractJsonSerializer(typeof(T)); using (MemoryStream stream = new MemoryStream(Encoding.UTF8.GetBytes(jsonstring))) { result = json.ReadObject(stream); } return result; } catch { return result; } } #endregion #region 对象<-->JSON 2.0 使用litjson插件 /// /// 对象转JSON jsonData /// ////// /// //public static string ObjetcToJsonData (T t) //{ // try // { // JsonData json = new JsonData(t); // return json.ToJson(); // } // catch // { // return ""; // } //} / / 对象转JSON jsonMapper / // / //public static string ObjetcToJsonMapper (T t) //{ // try // { // JsonData json = JsonMapper.ToJson(t); // return json.ToJson(); // } // catch // { // return ""; // } //} / / json转对象 jsonMapper / / ///public static object JsonToObject(string jsons) //{ // try // { // JsonData jsonObject = JsonMapper.ToObject(jsons); // return jsonObject; // } // catch { return null; } //} #endregion #region DataTable<-->JSON /// /// DataTable转为json /// /// DataTable ///json数据 public static string DataTableToJson(DataTable dt) { List> list = new List >(); foreach (DataRow dr in dt.Rows) { Dictionary result = new Dictionary (); foreach (DataColumn dc in dt.Columns) { result.Add(dc.ColumnName, dr[dc]); } list.Add(result); } return SerializeToJson(list); } /// /// 序列化对象为Json字符串 /// /// 要序列化的对象 /// 序列化对象的深度,默认为100 ///Json字符串 public static string SerializeToJson(object obj, int recursionLimit = 100) { try { JavaScriptSerializer serialize = new JavaScriptSerializer(); serialize.RecursionLimit = recursionLimit; return serialize.Serialize(obj); } catch { return ""; } } ////// json包转DataTable /// /// ///public static DataTable JsonToDataTable(string jsons) { DataTable dt = new DataTable(); try { JavaScriptSerializer serialize = new JavaScriptSerializer(); serialize.MaxJsonLength = Int32.MaxValue; ArrayList list = serialize.Deserialize (jsons); if (list.Count > 0) { foreach (Dictionary item in list) { if (item.Keys.Count == 0)//无值返回空 { return dt; } if (dt.Columns.Count == 0)//初始Columns { foreach (string current in item.Keys) { dt.Columns.Add(current, item[current].GetType()); } } DataRow dr = dt.NewRow(); foreach (string current in item.Keys) { dr[current] = item[current]; } dt.Rows.Add(dr); } } } catch { return dt; } return dt; } #endregion #region List<--->DataTable /// /// DataTable转换泛型集合 /// ////// /// public static List DataTableToList (DataTable table) { List list = new List (); T t = default(T); PropertyInfo[] propertypes = null; string tempName = string.Empty; foreach (DataRow row in table.Rows) { t = Activator.CreateInstance (); propertypes = t.GetType().GetProperties(); foreach (PropertyInfo pro in propertypes) { tempName = pro.Name; if (table.Columns.Contains(tempName)) { object value = row[tempName]; if (!value.ToString().Equals("")) { pro.SetValue(t, value, null); } } } list.Add(t); } return list.Count == 0 ? null : list; } /// /// 将集合类转换成DataTable /// /// 集合 ///DataTable public static DataTable ListToDataTable(IList list) { DataTable result = new DataTable(); if (list != null && list.Count > 0) { PropertyInfo[] propertys = list[0].GetType().GetProperties(); foreach (PropertyInfo pi in propertys) { result.Columns.Add(pi.Name, pi.PropertyType); } for (int i = 0; i < list.Count; i++) { ArrayList tempList = new ArrayList(); foreach (PropertyInfo pi in propertys) { object obj = pi.GetValue(list[i], null); tempList.Add(obj); } object[] array = tempList.ToArray(); result.LoadDataRow(array, true); } } return result; } public static ListConvertTo (DataTable dt) where T : new() { if (dt == null) return null; if (dt.Rows.Count <= 0) return null; List list = new List (); try { List columnsName = new List (); foreach (DataColumn dataColumn in dt.Columns) { columnsName.Add(dataColumn.ColumnName);//得到所有的表头 } list = dt.AsEnumerable().ToList().ConvertAll (row => GetObject (row, columnsName)); //转换 return list; } catch { return null; } } public static T GetObject (DataRow row, List columnsName) where T : new() { T obj = new T(); try { string columnname = ""; string value = ""; PropertyInfo[] Properties = typeof(T).GetProperties(); foreach (PropertyInfo objProperty in Properties) //遍历T的属性 { columnname = columnsName.Find(name => name.ToLower() == objProperty.Name.ToLower()); //寻找可以匹配的表头名称 if (!string.IsNullOrEmpty(columnname)) { value = row[columnname].ToString(); if (!string.IsNullOrEmpty(value)) { if (Nullable.GetUnderlyingType(objProperty.PropertyType) != null) //存在匹配的表头 { value = row[columnname].ToString().Replace("$", "").Replace(",", ""); //从dataRow中提取数据 objProperty.SetValue(obj, Convert.ChangeType(value, Type.GetType(Nullable.GetUnderlyingType(objProperty.PropertyType).ToString())), null); //赋值操作 } else { value = row[columnname].ToString().Replace("%", ""); //存在匹配的表头 objProperty.SetValue(obj, Convert.ChangeType(value, Type.GetType(objProperty.PropertyType.ToString())), null);//赋值操作 } } } } return obj; } catch { return obj; } } /// /// 将泛型集合类转换成DataTable /// ///集合项类型 /// 集合 /// 需要返回的列的列名 ///数据集(表) public static DataTable ListToDataTable(IList list, params string[] propertyName) { List propertyNameList = new List (); if (propertyName != null) propertyNameList.AddRange(propertyName); DataTable result = new DataTable(); if (list != null && list.Count > 0) { PropertyInfo[] propertys = list[0].GetType().GetProperties(); foreach (PropertyInfo pi in propertys) { if (propertyNameList.Count == 0) { result.Columns.Add(pi.Name, pi.PropertyType); } else { if (propertyNameList.Contains(pi.Name)) result.Columns.Add(pi.Name, pi.PropertyType); } } for (int i = 0; i < list.Count; i++) { ArrayList tempList = new ArrayList(); foreach (PropertyInfo pi in propertys) { if (propertyNameList.Count == 0) { object obj = pi.GetValue(list[i], null); tempList.Add(obj); } else { if (propertyNameList.Contains(pi.Name)) { object obj = pi.GetValue(list[i], null); tempList.Add(obj); } } } object[] array = tempList.ToArray(); result.LoadDataRow(array, true); } } return result; } #endregion #region 清除HTML标记 public static string DropHTML(string Htmlstring) { if (string.IsNullOrEmpty(Htmlstring)) return ""; //删除脚本 Htmlstring = Regex.Replace(Htmlstring, @"
Htmlstring=Htmlstring.Replace("<", "");
Htmlstring=Htmlstring.Replace(">", ""); Htmlstring=Htmlstring.Replace("\r\n", "");Htmlstring = HttpContext.Current.Server.HtmlEncode(Htmlstring).Trim(); return Htmlstring; } #endregion #region 清除HTML标记且返回相应的长度 public static string DropHTML(string Htmlstring, int strLen) { return CutString(DropHTML(Htmlstring), strLen); } #endregion #region TXT代码转换成HTML格式 ////// 字符串字符处理 /// /// 等待处理的字符串 ///处理后的字符串 /// //把TXT代码转换成HTML格式 public static String ToHtml(string Input) { StringBuilder sb = new StringBuilder(Input); sb.Replace("&", "&"); sb.Replace("<", "<"); sb.Replace(">", ">"); sb.Replace("\r\n", ""); sb.Replace("\n", ""); sb.Replace("\t", " "); //sb.Replace(" ", " "); return sb.ToString(); } #endregion #region HTML代码转换成TXT格式 ////// 字符串字符处理 /// /// 等待处理的字符串 ///处理后的字符串 /// //把HTML代码转换成TXT格式 public static String ToTxt(String Input) { StringBuilder sb = new StringBuilder(Input); sb.Replace(" ", " "); sb.Replace("", "\r\n"); sb.Replace("", "\n"); sb.Replace("", "\n"); sb.Replace("", "\r\n"); sb.Replace("<", "<"); sb.Replace(">", ">"); sb.Replace("&", "&"); return sb.ToString(); } #endregion #region 检测是否有Sql危险字符 ////// 检测是否有Sql危险字符 /// /// 要判断字符串 ///判断结果 public static bool IsSafeSqlString(string str) { return !Regex.IsMatch(str, @"[-|;|,|\/|\(|\)|\[|\]|\}|\{|%|@|\*|!|\']"); } ////// 检查危险字符 /// /// ///public static string Filter(string sInput) { if (sInput == null || sInput == "") return null; string sInput1 = sInput.ToLower(); string output = sInput; string pattern = @"*|and|exec|insert|select|delete|update|count|master|truncate|declare|char(|mid(|chr(|'"; if (Regex.Match(sInput1, Regex.Escape(pattern), RegexOptions.Compiled | RegexOptions.IgnoreCase).Success) { throw new Exception("字符串中含有非法字符!"); } else { output = output.Replace("'", "''"); } return output; } /// /// 检查过滤设定的危险字符 /// /// 要过滤的字符串 ///如果参数存在不安全字符,则返回true public static bool SqlFilter(string word, string InText) { if (InText == null) return false; foreach (string i in word.Split('|')) { if ((InText.ToLower().IndexOf(i + " ") > -1) || (InText.ToLower().IndexOf(" " + i) > -1)) { return true; } } return false; } #endregion #region 过滤特殊字符 ////// 过滤特殊字符 /// /// ///public static string Htmls(string Input) { if (Input != string.Empty && Input != null) { string ihtml = Input.ToLower(); ihtml = ihtml.Replace("