System.Text.Encoding.GetEncoding(string)

public string DoPost(string url, IDictionary<string, string> textParams, IDictionary<string, FileItem> fileParams, string charset)
        {
            // 如果没有文件参数，则走普通POST请求
            if (fileParams == null || fileParams.Count == 0)
            {
                return DoPost(url, textParams, charset);
            }

            string boundary = DateTime.Now.Ticks.ToString("X"); // 随机分隔线

            HttpWebRequest req = GetWebRequest(url, "POST");
            req.ContentType = "multipart/form-data;charset=" + charset + ";boundary=" + boundary;

            Stream reqStream = req.GetRequestStream();
            byte[] itemBoundaryBytes = Encoding.GetEncoding(charset).GetBytes("\r\n--" + boundary + "\r\n");
            byte[] endBoundaryBytes = Encoding.GetEncoding(charset).GetBytes("\r\n--" + boundary + "--\r\n");

            // 组装文本请求参数
            string textTemplate = "Content-Disposition:form-data;name=\"{0}\"\r\nContent-Type:text/plain\r\n\r\n{1}";
            IEnumerator<KeyValuePair<string, string>> textEnum = textParams.GetEnumerator();
            while (textEnum.MoveNext())
            {
                string textEntry = string.Format(textTemplate, textEnum.Current.Key, textEnum.Current.Value);
                byte[] itemBytes = Encoding.GetEncoding(charset).GetBytes(textEntry);
                reqStream.Write(itemBoundaryBytes, 0, itemBoundaryBytes.Length);
                reqStream.Write(itemBytes, 0, itemBytes.Length);
            }

            // 组装文件请求参数
            string fileTemplate = "Content-Disposition:form-data;name=\"{0}\";filename=\"{1}\"\r\nContent-Type:{2}\r\n\r\n";
            IEnumerator<KeyValuePair<string, FileItem>> fileEnum = fileParams.GetEnumerator();
            while (fileEnum.MoveNext())
            {
                string key = fileEnum.Current.Key;
                FileItem fileItem = fileEnum.Current.Value;
                string fileEntry = string.Format(fileTemplate, key, fileItem.GetFileName(), fileItem.GetMimeType());
                byte[] itemBytes = Encoding.GetEncoding(charset).GetBytes(fileEntry);
                reqStream.Write(itemBoundaryBytes, 0, itemBoundaryBytes.Length);
                reqStream.Write(itemBytes, 0, itemBytes.Length);

                byte[] fileBytes = fileItem.GetContent();
                reqStream.Write(fileBytes, 0, fileBytes.Length);
            }

            reqStream.Write(endBoundaryBytes, 0, endBoundaryBytes.Length);
            reqStream.Close();

            HttpWebResponse rsp = (HttpWebResponse)req.GetResponse();
            Encoding encoding = Encoding.GetEncoding(rsp.CharacterSet);
            return GetResponsereplacedtring(rsp, encoding);
        }

public static string AesDencrypt(string encryptKey, string bizContent, string charset)
        {
            Byte[] keyArray = Convert.FromBase64String(encryptKey);
            Byte[] toEncryptArray = Convert.FromBase64String(bizContent);

            RijndaelManaged rDel = new RijndaelManaged();
            rDel.Key = keyArray;
            rDel.Mode = CipherMode.CBC;
            rDel.Padding = PaddingMode.PKCS7;
            rDel.IV = AES_IV;

            ICryptoTransform cTransform = rDel.CreateDecryptor(rDel.Key, rDel.IV);
            Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);


            if (string.IsNullOrEmpty(charset))
            {
                return Encoding.UTF8.GetString(resultArray);
            }
            else
            {
                return Encoding.GetEncoding(charset).GetString(resultArray);
            }


        }

static Encoding Get_Encoding(Encode _Encode)
      {
         switch (_Encode)
         {
            case Encode.UTF7: return Encoding.UTF7;
            case Encode.UTF32: return Encoding.UTF32;
            case Encode.UNICODE: return Encoding.Unicode;
            case Encode.ASCII: return Encoding.ASCII;
            case Encode.GB2312:
               return Encoding.GetEncoding("GB2312");
            case Encode.GBK:
               return Encoding.GetEncoding("GBK");
            default: return Encoding.UTF8;
         }
      }

public T Parse(string body, string charset)
        {
            XmlSerializer serializer = null;
            string rootTagName = GetRootElement(body);

            bool inc = parsers.TryGetValue(rootTagName, out serializer);
            if (!inc || serializer == null)
            {
                XmlAttributes rootAttrs = new XmlAttributes();
                rootAttrs.XmlRoot = new XmlRootAttribute(rootTagName);

                XmlAttributeOverrides attrOvrs = new XmlAttributeOverrides();
                attrOvrs.Add(typeof(T), rootAttrs);

                serializer = new XmlSerializer(typeof(T), attrOvrs);
                parsers[rootTagName] = serializer;
            }

            object obj = null;
            Encoding encoding = null;
            if (string.IsNullOrEmpty(charset))
            {
                encoding = Encoding.UTF8;
            }
            else
            {
                encoding = Encoding.GetEncoding(charset);
            }
            using (Stream stream = new MemoryStream(encoding.GetBytes(body)))
            {
                obj = serializer.Deserialize(stream);
            }

            T rsp = (T)obj;
            if (rsp != null)
            {
                rsp.Body = body;
            }
            return rsp;
        }

public static string MyUrlDeCode(string str, Encoding encoding)
        {
            if (encoding != null)
                return HttpUtility.UrlDecode(str, encoding);
            //首先用utf-8进行解码                     
            var code = HttpUtility.UrlDecode(str.ToUpper(), Encoding.UTF8);
            //将已经解码的字符再次进行编码.
            var encode = HttpUtility.UrlEncode(code, Encoding.UTF8)?.ToUpper();
            encoding = str == encode ? Encoding.UTF8 : Encoding.GetEncoding("gb2312");
            return HttpUtility.UrlDecode(str, encoding);
        }

public static Encoding DetectEncoding(Stream stream)
        {
            var reader = new StreamReader(stream, Encoding.GetEncoding("ASCII"), detectEncodingFromByteOrderMarks: true);

            var parser = new POParser(new POParserSettings { ReadHeaderOnly = true, ReadContentTypeHeaderOnly = true });
            POParseResult result = parser.Parse(reader);
            if (!result.Success)
                return null;

            return
                result.Catalog.Encoding != null ?
                Encoding.GetEncoding(result.Catalog.Encoding) :
                reader.CurrentEncoding;
        }

protected override string DoEncrypt(string plainText, string charset, string publicKey)
        {
            //加载公钥参数
            ICipherParameters cipherParams = BuildPublickKeyParams(publicKey).Parameters;
            ParametersWithRandom parametersWithRandom = new ParametersWithRandom(cipherParams);

            //初始化SM2算法引擎
            SM2Engine sm2Engine = new SM2Engine();
            sm2Engine.Init(true, parametersWithRandom);

            //对输入明文进行加密
            byte[] input = Encoding.GetEncoding(charset).GetBytes(plainText);
            byte[] output = sm2Engine.ProcessBlock(input, 0, input.Length);

            //将密文Base64编码后返回
            return Convert.ToBase64String(output);
        }

public static string Get(string Url, string gettDataStr)
            {
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url + (gettDataStr == "" ? "" : "?") + gettDataStr);
                request.Method = "GET";
                request.ContentType = "text/html;charset=UTF-8";

                HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                Stream myResponseStream = response.GetResponseStream();
                StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));
                string retString = myStreamReader.ReadToEnd();
                myStreamReader.Close();
                myResponseStream.Close();

                return retString;
            }

protected override string DoSign(string content, string charset, string privateKey)
        {
            using (RSACryptoServiceProvider rsaService = BuildRSAServiceProvider(Convert.FromBase64String(privateKey)))
            {
                byte[] data = Encoding.GetEncoding(charset).GetBytes(content);

                byte[] sign = rsaService.SignData(data, GetShaType());
                return Convert.ToBase64String(sign);
            }
        }

private void SetEncoding(HttpItem item, HttpResult result, byte[] ResponseByte)
        {
            //是否返回Byte类型数据
            if (item.ResultType == ResultType.Byte) result.ResultByte = ResponseByte;
            //从这里开始我们要无视编码了
            if (encoding == null)
            {
                Match meta = Regex.Match(Encoding.Default.GetString(ResponseByte), "<meta[^<]*charset=([^<]*)[\"']", RegexOptions.IgnoreCase);
                string c = string.Empty;
                if (meta != null && meta.Groups.Count > 0)
                {
                    c = meta.Groups[1].Value.ToLower().Trim();
                }
                if (c.Length > 2)
                {
                    try
                    {
                        encoding = Encoding.GetEncoding(c.Replace("\"", string.Empty).Replace("'", "").Replace(";", "").Replace("iso-8859-1", "gbk").Trim());
                    }
                    catch
                    {
                        if (string.IsNullOrEmpty(response.CharacterSet))
                        {
                            encoding = Encoding.UTF8;
                        }
                        else
                        {
                            encoding = Encoding.GetEncoding(response.CharacterSet);
                        }
                    }
                }
                else
                {
                    if (string.IsNullOrEmpty(response.CharacterSet))
                    {
                        encoding = Encoding.UTF8;
                    }
                    else
                    {
                        encoding = Encoding.GetEncoding(response.CharacterSet);
                    }
                }
            }
        }

[TestMethod]
        public void TestReadName1_ISOEncoding()
        {
            CultureInfo.CurrentUICulture = new CultureInfo("fr-FR");
            JsonLocalizer.Localizer.JsonStringLocalizer localizer = JsonStringLocalizerHelperFactory.Create(new JsonLocalizationOptions()
            {
                DefaultCulture = new CultureInfo("en-US"),
                SupportedCultureInfos = new System.Collections.Generic.HashSet<CultureInfo>()
                {
                     new CultureInfo("fr-FR")
                },
                ResourcesPath = "encoding",
                FileEncoding = Encoding.GetEncoding("ISO-8859-1")
            });

            LocalizedString result = localizer.GetString("Name1");

            replacedert.AreEqual("Mon Nom 1", result);
        }

public static string MyUrlDeCode(string str, Encoding encoding)
        {
            if (encoding == null)
            {
                Encoding utf8 = Encoding.UTF8;
                //首先用utf-8进行解码                     
                string code = HttpUtility.UrlDecode(str.ToUpper(), utf8);
                //将已经解码的字符再次进行编码.
                string encode = HttpUtility.UrlEncode(code, utf8).ToUpper();
                if (str == encode)
                    encoding = Encoding.UTF8;
                else
                    encoding = Encoding.GetEncoding("gb2312");
            }
            return HttpUtility.UrlDecode(str, encoding);
        }

public static string GetBasicAuthentication(string username, string preplacedword)
        {
            return $"Basic {Convert.ToBase64String(Encoding.GetEncoding("ISO-8859-1").GetBytes($"{username}:{preplacedword}"))}";
        }

public string DoPost(string url, IDictionary<string, string> parameters, string charset)
        {
            HttpWebRequest req = GetWebRequest(url, "POST");
            req.ContentType = "application/x-www-form-urlencoded;charset=" + charset;

            byte[] postData = Encoding.GetEncoding(charset).GetBytes(BuildQuery(parameters, charset));
            Stream reqStream = req.GetRequestStream();
            reqStream.Write(postData, 0, postData.Length);
            reqStream.Close();

            HttpWebResponse rsp = (HttpWebResponse)req.GetResponse();
            Encoding encoding = Encoding.GetEncoding(rsp.CharacterSet);
            return GetResponsereplacedtring(rsp, encoding);
        }

public static string GetString(byte[] b, string encoding = QQGlobal.QQCharsetDefault)
        {
            try
            {
                return Encoding.GetEncoding(encoding).GetString(b);
            }
            catch
            {
                return Encoding.Default.GetString(b);
            }
        }

private AopResponse DoGet(AopDictionary parameters, Stream outStream)
        {
            AlipayMobilePublicMultiMediaDownloadResponse response = null;

            string url = this.serverUrl;
            System.Console.WriteLine(url);
            if (parameters != null && parameters.Count > 0)
            {
                if (url.Contains("?"))
                {
                    url = url + "&" + WebUtils.BuildQuery(parameters, charset);
                }
                else
                {
                    url = url + "?" + WebUtils.BuildQuery(parameters, charset);
                }
            }

            HttpWebRequest req = webUtils.GetWebRequest(url, "GET");
            req.ContentType = "application/x-www-form-urlencoded;charset=" + charset;

            HttpWebResponse rsp = (HttpWebResponse)req.GetResponse();
            if (rsp.StatusCode == HttpStatusCode.OK)
            {
                if (rsp.ContentType.ToLower().Contains("text/plain"))
                {
                    Encoding encoding = Encoding.GetEncoding(rsp.CharacterSet);
                    string body = webUtils.GetResponsereplacedtring(rsp, encoding);
                    IAopParser<AlipayMobilePublicMultiMediaDownloadResponse> tp = new AopJsonParser<AlipayMobilePublicMultiMediaDownloadResponse>();
                    response = tp.Parse(body, charset);
                }
                else
                {
                    GetResponsereplacedtream(outStream, rsp);
                    response = new AlipayMobilePublicMultiMediaDownloadResponse();
                }
            }
            return response;
        }

private static string GetDefaultIssuePartialUrl(string replacedle)
		{
			if (string.IsNullOrWhiteSpace(replacedle))
			{
				throw new ArgumentException("Value can't be null or whitespace.", "replacedle");
			}

			string replacedleSlug;

			try
			{
				// Encoding the replacedle as Cyrillic, and then back to ASCII, converts accented characters to their
				// unaccented version. We'll try/catch this, since it depends on the underlying platform whether
				// the Cyrillic code page is available.
				replacedleSlug = Encoding.ASCII.GetString(Encoding.GetEncoding("Cyrillic").GetBytes(replacedle)).ToLowerInvariant();
			}
			catch
			{
				replacedleSlug = replacedle.ToLowerInvariant();
			}

			// Strip all disallowed characters.
			replacedleSlug = Regex.Replace(replacedleSlug, @"[^a-z0-9\s-]", string.Empty);

			// Convert all runs of multiple spaces to a single space.
			replacedleSlug = Regex.Replace(replacedleSlug, @"\s+", " ").Trim();

			// Cap the length of the replacedle slug.
			replacedleSlug = replacedleSlug.Substring(0, replacedleSlug.Length <= 50 ? replacedleSlug.Length : 50).Trim();

			// Replace all spaces with hyphens.
			replacedleSlug = Regex.Replace(replacedleSlug, @"\s", "-").Trim('-');

			return replacedleSlug;
		}

protected override bool DoVerify(string content, string charset, string publicKey, string sign)
        {
            //加载公钥参数
            ParametersWithID parametersWithID = BuildPublickKeyParams(publicKey);

            //加载签名器
            SM2Signer signer = new SM2Signer();
            signer.Init(false, parametersWithID);

            //向签名器中输入原文
            byte[] input = Encoding.GetEncoding(charset).GetBytes(content);
            signer.BlockUpdate(input, 0, input.Length);

            //传入指定签名串进行验签并返回结果
            return signer.VerifySignature(Convert.FromBase64String(sign));
        }

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory) {
			Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
			Console.OutputEncoding = Encoding.GetEncoding("GB2312");
			Console.InputEncoding = Encoding.GetEncoding("GB2312");

			loggerFactory.AddConsole(Configuration.GetSection("Logging"));
			loggerFactory.AddDebug();

			app.UseHttpMethodOverride(new HttpMethodOverrideOptions { FormFieldName = "X-Http-Method-Override" });
			app.UseDeveloperExceptionPage();
			app.UseMvc();

			app.UseSwagger();
			app.UseSwaggerUI(c => {
				c.SwaggerEndpoint("/swagger/v1/swagger.json", "FreeSql.RESTful API V1");
			});
		}

protected override string DoEncrypt(string plainText, string charset, string publicKey)
        {
            using (RSACryptoServiceProvider rsaService = new RSACryptoServiceProvider())
            {
                rsaService.PersistKeyInCsp = false;
                rsaService.ImportParameters(ConvertFromPemPublicKey(publicKey));
                byte[] data = Encoding.GetEncoding(charset).GetBytes(plainText);

                //加密块最大长度
                int maxBlockSize = rsaService.KeySize / 8 - 11;

                //如果明文长度小于等于单个加密块最大长度，直接单次调用加密接口完成加密
                if (data.Length <= maxBlockSize)
                {
                    byte[] cipherbytes = rsaService.Encrypt(data, false);
                    return Convert.ToBase64String(cipherbytes);
                }

                //如果明文长度大于单个加密块最大长度，在内存中循环调用加密接口完成加密
                using (MemoryStream cipherStream = new MemoryStream())
                {
                    using (MemoryStream plainStream = new MemoryStream(data))
                    {
                        Byte[] buffer = new Byte[maxBlockSize];
                        int readSize = plainStream.Read(buffer, 0, maxBlockSize);
                        while (readSize > 0)
                        {
                            Byte[] plainBlock = new Byte[readSize];
                            Array.Copy(buffer, 0, plainBlock, 0, readSize);
                            Byte[] cipherBlock = rsaService.Encrypt(plainBlock, false);
                            cipherStream.Write(cipherBlock, 0, cipherBlock.Length);
                            readSize = plainStream.Read(buffer, 0, maxBlockSize);
                        }
                    }
                    return Convert.ToBase64String(cipherStream.ToArray(), Base64FormattingOptions.None);
                }
            }
        }

public bool GetHash(string m_strSource, ref byte[] HashData)
        {
            //从字符串中取得Hash描述 
            byte[] Buffer;
            HashAlgorithm MD5 = HashAlgorithm.Create("MD5");
            Buffer = Encoding.GetEncoding("GB2312").GetBytes(m_strSource);
            HashData = MD5.ComputeHash(Buffer);

            return true;
        }

public bool GetHash(string m_strSource, ref string strHashData)
        {
            //从字符串中取得Hash描述 
            byte[] Buffer;
            byte[] HashData;
            HashAlgorithm MD5 = HashAlgorithm.Create("MD5");
            Buffer = Encoding.GetEncoding("GB2312").GetBytes(m_strSource);
            HashData = MD5.ComputeHash(Buffer);

            strHashData = Convert.ToBase64String(HashData);
            return true;
        }

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory) {
			Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
			Console.OutputEncoding = Encoding.GetEncoding("GB2312");
			Console.InputEncoding = Encoding.GetEncoding("GB2312");

			loggerFactory.AddConsole(Configuration.GetSection("Logging"));
			loggerFactory.AddDebug();

			app.UseHttpMethodOverride(new HttpMethodOverrideOptions { FormFieldName = "X-Http-Method-Override" });
			app.UseDeveloperExceptionPage();
			app.UseMvc();

			app.UseSwagger();
			app.UseSwaggerUI(c => {
				c.SwaggerEndpoint("/swagger/v1/swagger.json", "FreeSql.domain_01 API V1");
			});
		}

public static string MyUrlDeCode(string str, Encoding encoding)
        {
            if (encoding != null)
                return HttpUtility.UrlDecode(str, encoding);
            var utf8 = Encoding.UTF8;
            //首先用utf-8进行解码                     
            var code = HttpUtility.UrlDecode(str.ToUpper(), utf8);
            //将已经解码的字符再次进行编码.
            var encode = HttpUtility.UrlEncode(code, utf8)?.ToUpper();
            encoding = str == encode ? Encoding.UTF8 : Encoding.GetEncoding("gb2312");
            return HttpUtility.UrlDecode(str, encoding);
        }

public bool GetHash(string m_strSource, ref string strHashData)
        {

            //从字符串中取得Hash描述   
            byte[] Buffer;
            byte[] HashData;
            HashAlgorithm MD5 = HashAlgorithm.Create("MD5");
            Buffer = Encoding.GetEncoding("GB2312").GetBytes(m_strSource);
            HashData = MD5.ComputeHash(Buffer);

            strHashData = Convert.ToBase64String(HashData);
            return true;

        }

private (string Username, string Preplacedword) GetCredentials(IHeaderDictionary headers)
        {
            if (!headers.ContainsKey(AuthorizationHeader))
            {
                throw new InvalidOperationException("No Authorization header found.");
            }

            string[] authValues = headers[AuthorizationHeader].ToArray();
            if (authValues.Length != 1)
            {
                throw new InvalidOperationException("More than one Authorization header found.");
            }

            string auth = authValues.Single();
            if (!auth.StartsWith(BasicPrefix))
            {
                throw new InvalidOperationException("Authorization header is not Basic.");
            }

            auth = auth.Substring(BasicPrefix.Length).Trim();

            byte[] decoded = Convert.FromBase64String(auth);
            Encoding iso = Encoding.GetEncoding("ISO-8859-1");

            string[] authPair = iso.GetString(decoded).Split(':');

            return (authPair[0], authPair[1]);
        }

private void _readLE()
                {
                    _entries = new List<string>();
                    {
                        var i = 0;
                        while (!m_io.IsEof)
                        {
                            _entries.Add(System.Text.Encoding.GetEncoding("ASCII").GetString(m_io.ReadBytesTerm(0, false, true, true)));
                            i++;
                        }
                    }
                }

public void AddData(byte[] data)
        {
            if (rbtnHex.Checked)
            {
                StringBuilder sb = new StringBuilder();
                for (int i = 0; i < data.Length; i++)
                {
                    sb.AppendFormat("{0:x2}" + " ", data[i]);
                }
                AddContent(sb.ToString().ToUpper());
            }
            else if (rbtnUTF8.Checked)
            {
                AddContent(new UTF8Encoding().GetString(data));
            }
            else if (rbtnUnicode.Checked)
            {
                AddContent(new UnicodeEncoding().GetString(data));
            }
            else// if (rbtnASCII.Checked)
            {
                //AddContent(new ASCIIEncoding().GetString(data));
                AddContent(Encoding.GetEncoding("GBK").GetString(data));
            }

            lblRevCount.Invoke(new MethodInvoker(delegate
            {
                lblRevCount.Text = "接收:" + (int.Parse(lblRevCount.Text.Substring(3)) + data.Length).ToString();
            }));
        }

[TestMethod]
        public void TestReadName1_ISOEncoding_SpecialChar()
        {
            CultureInfo.CurrentUICulture = new CultureInfo("pt-PT");
            JsonLocalizer.Localizer.JsonStringLocalizer localizer = JsonStringLocalizerHelperFactory.Create(new JsonLocalizationOptions()
            {
                DefaultCulture = new CultureInfo("en-US"),
                SupportedCultureInfos = new System.Collections.Generic.HashSet<CultureInfo>()
                {
                     new CultureInfo("fr-FR"),
                     new CultureInfo("pt-PT")
                },
                ResourcesPath = "encoding",
                FileEncoding = Encoding.GetEncoding("ISO-8859-1")
            });

            LocalizedString result = localizer.GetString("Name1");

            replacedert.AreEqual("Eu so joão", result);
        }

public void Configure(IApplicationBuilder app)
        {
            Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
            Console.OutputEncoding = Encoding.GetEncoding("GB2312");
            Console.InputEncoding = Encoding.GetEncoding("GB2312");

            app.UseDeveloperExceptionPage();

            app.UseRouting();
            app.UseEndpoints(config => config.MapControllers());
            app.UseDefaultFiles();
            app.UseStaticFiles();

            ImHelper.Initialization(new ImClientOptions
            {
                Redis = new FreeRedis.RedisClient("127.0.0.1:6379,poolsize=10"),
                Servers = new[] { "127.0.0.1:6001" }
            });

            ImHelper.Instance.OnSend += (s, e) => 
                Console.WriteLine($"ImClient.SendMessage(server={e.Server},data={JsonConvert.SerializeObject(e.Message)})");

            ImHelper.EventBus(
                t =>
                {
                    Console.WriteLine(t.clientId + "上线了");
                    var onlineUids = ImHelper.GetClientListByOnline();
                    ImHelper.SendMessage(t.clientId, onlineUids, $"用户{t.clientId}上线了");
                }, 
                t => Console.WriteLine(t.clientId + "下线了"));
        }

protected override bool DoVerify(string content, string charset, string publicKey, string sign)
        {
            using (RSACryptoServiceProvider rsaService = new RSACryptoServiceProvider())
            {
                rsaService.PersistKeyInCsp = false;
                rsaService.ImportParameters(ConvertFromPemPublicKey(publicKey));

                return rsaService.VerifyData(Encoding.GetEncoding(charset).GetBytes(content),
                    GetShaType(), Convert.FromBase64String(sign));
            }
        }

private static string ReadResponseStream(Stream receiveStream)
        {
            Encoding encode = System.Text.Encoding.GetEncoding("utf-8");
            // Pipes the stream to a higher level stream reader with the required encoding format. 
            StreamReader readStream = new StreamReader(receiveStream, encode);
            Char[] read = new Char[256];
            // Reads 256 characters at a time.    
            int count = readStream.Read(read, 0, 256);
            var strP = "";
            while (count > 0)
            {
                // Dumps the 256 characters on a string and displays the string to the console.
                String str = new String(read, 0, count);
                Console.Write(str);
                strP += str;
                count = readStream.Read(read, 0, 256);
            }
            return strP;
        }

public string DoGet(string url, IDictionary<string, string> parameters, string charset)
        {
            if (parameters != null && parameters.Count > 0)
            {
                if (url.Contains("?"))
                {
                    url = url + "&" + BuildQuery(parameters, charset);
                }
                else
                {
                    url = url + "?" + BuildQuery(parameters, charset);
                }
            }

            HttpWebRequest req = GetWebRequest(url, "GET");
            req.ContentType = "application/x-www-form-urlencoded;charset=" + charset;

            HttpWebResponse rsp = (HttpWebResponse)req.GetResponse();
            Encoding encoding = Encoding.GetEncoding(rsp.CharacterSet);
            return GetResponsereplacedtring(rsp, encoding);
        }

public static ConnectionStringBuilder Parse(string connectionString)
        {
            var ret = new ConnectionStringBuilder();
            if (string.IsNullOrEmpty(connectionString)) return ret;

            //支持密码中带有逗号，将原有 split(',') 改成以下处理方式
            var vs = Regex.Split(connectionString, @"\,([\w \t\r\n]+)=", RegexOptions.Multiline);
            ret.Host = vs[0].Trim();

            for (var a = 1; a < vs.Length; a += 2)
            {
                var kv = new[] { Regex.Replace(vs[a].ToLower().Trim(), @"[ \t\r\n]", ""), vs[a + 1] };
                switch (kv[0])
                {
                    case "ssl": if (kv.Length > 1 && kv[1].ToLower().Trim() == "true") ret.Ssl = true; break;
                    case "protocol": if (kv.Length > 1 && kv[1].ToUpper().Trim() == "RESP3") ret.Protocol = RedisProtocol.RESP3; break;
                    case "userid":
                    case "user": if (kv.Length > 1) ret.User = kv[1].Trim(); break;
                    case "preplacedword": if (kv.Length > 1) ret.Preplacedword = kv[1]; break;
                    case "database":
                    case "defaultdatabase": if (kv.Length > 1 && int.TryParse(kv[1].Trim(), out var database) && database > 0) ret.Database = database; break;

                    case "prefix": if (kv.Length > 1) ret.Prefix = kv[1].Trim(); break;
                    case "name":
                    case "clientname": if (kv.Length > 1) ret.ClientName = kv[1].Trim(); break;
                    case "encoding": if (kv.Length > 1) ret.Encoding = Encoding.GetEncoding(kv[1].Trim()); break;

                    case "idletimeout": if (kv.Length > 1 && long.TryParse(kv[1].Trim(), out var idleTimeout) && idleTimeout > 0) ret.IdleTimeout = TimeSpan.FromMilliseconds(idleTimeout); break;
                    case "connecttimeout": if (kv.Length > 1 && long.TryParse(kv[1].Trim(), out var connectTimeout) && connectTimeout > 0) ret.ConnectTimeout = TimeSpan.FromMilliseconds(connectTimeout); break;
                    case "receivetimeout": if (kv.Length > 1 && long.TryParse(kv[1].Trim(), out var receiveTimeout) && receiveTimeout > 0) ret.ReceiveTimeout = TimeSpan.FromMilliseconds(receiveTimeout); break;
                    case "sendtimeout": if (kv.Length > 1 && long.TryParse(kv[1].Trim(), out var sendTimeout) && sendTimeout > 0) ret.SendTimeout = TimeSpan.FromMilliseconds(sendTimeout); break;

                    case "poolsize":
                    case "maxpoolsize": if (kv.Length > 1 && int.TryParse(kv[1].Trim(), out var maxPoolSize) && maxPoolSize > 0) ret.MaxPoolSize = maxPoolSize; break;
                    case "minpoolsize": if (kv.Length > 1 && int.TryParse(kv[1].Trim(), out var minPoolSize) && minPoolSize > 0) ret.MinPoolSize = minPoolSize; break;
                    case "retry": if (kv.Length > 1 && int.TryParse(kv[1].Trim(), out var retry) && retry > 0) ret.Retry = retry; break;
                }
            }
            return ret;
        }

public static string BuildQuery(IDictionary<string, string> parameters, string charset)
        {
            StringBuilder postData = new StringBuilder();
            bool hasParam = false;

            IEnumerator<KeyValuePair<string, string>> dem = parameters.GetEnumerator();
            while (dem.MoveNext())
            {
                string name = dem.Current.Key;
                string value = dem.Current.Value;
                // 忽略参数名或参数值为空的参数
                if (!string.IsNullOrEmpty(name) && !string.IsNullOrEmpty(value))
                {
                    if (hasParam)
                    {
                        postData.Append("&");
                    }

                    postData.Append(name);
                    postData.Append("=");

                    string encodedValue = HttpUtility.UrlEncode(value, Encoding.GetEncoding(charset));

                    postData.Append(encodedValue);
                    hasParam = true;
                }
            }

            return postData.ToString();
        }

private static string GetDefaultIdeaPartialUrl(string replacedle)
		{
			if (string.IsNullOrWhiteSpace(replacedle))
			{
				throw new ArgumentException("Value can't be null or whitespace.", "replacedle");
			}

			string replacedleSlug;

			try
			{
				// Encoding the replacedle as Cyrillic, and then back to ASCII, converts accented characters to their
				// unaccented version. We'll try/catch this, since it depends on the underlying platform whether
				// the Cyrillic code page is available.
				replacedleSlug = Encoding.ASCII.GetString(Encoding.GetEncoding("Cyrillic").GetBytes(replacedle)).ToLowerInvariant();
			}
			catch
			{
				replacedleSlug = replacedle.ToLowerInvariant();
			}

			// Strip all disallowed characters.
			replacedleSlug = Regex.Replace(replacedleSlug, @"[^a-z0-9\s-]", string.Empty);

			// Convert all runs of multiple spaces to a single space.
			replacedleSlug = Regex.Replace(replacedleSlug, @"\s+", " ").Trim();

			// Cap the length of the replacedle slug.
			replacedleSlug = replacedleSlug.Substring(0, replacedleSlug.Length <= 50 ? replacedleSlug.Length : 50).Trim();

			// Replace all spaces with hyphens.
			replacedleSlug = Regex.Replace(replacedleSlug, @"\s", "-").Trim('-');

			return replacedleSlug;
		}

protected override string DoDecrypt(string cipherTextBase64, string charset, string privateKey)
        {
            //加载私钥参数
            ICipherParameters cipherParams = BuildPrivateKeyParams(privateKey).Parameters;

            //初始化SM2算法引擎
            SM2Engine sm2Engine = new SM2Engine();
            sm2Engine.Init(false, cipherParams);

            //对输入密文进行解密
            byte[] input = Convert.FromBase64String(cipherTextBase64);
            byte[] output = sm2Engine.ProcessBlock(input, 0, input.Length);

            //将解密后的明文按指定字符集编码后返回
            return Encoding.GetEncoding(charset).GetString(output);
        }

public static string Post(string Url, string postDataStr, CookieContainer cookieContainer = null)
            {
                cookieContainer = cookieContainer ?? new CookieContainer();
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);
                request.Method = "POST";
                request.ContentType = "application/x-www-form-urlencoded";
                request.ContentLength = Encoding.UTF8.GetByteCount(postDataStr);
                request.CookieContainer = cookieContainer;
                Stream myRequestStream = request.GetRequestStream();
                StreamWriter myStreamWriter = new StreamWriter(myRequestStream, Encoding.GetEncoding("gb2312"));
                myStreamWriter.Write(postDataStr);
                myStreamWriter.Close();

                HttpWebResponse response = (HttpWebResponse)request.GetResponse();

                response.Cookies = cookieContainer.GetCookies(response.ResponseUri);
                Stream myResponseStream = response.GetResponseStream();
                StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));
                string retString = myStreamReader.ReadToEnd();
                myStreamReader.Close();
                myResponseStream.Close();

                return retString;
            }

protected override string DoSign(string content, string charset, string privateKey)
        {
            //加载私钥参数
            ParametersWithID parametersWithID = BuildPrivateKeyParams(privateKey);

            //加载签名器
            SM2Signer signer = new SM2Signer();
            signer.Init(true, parametersWithID);

            //向签名器中输入原文
            byte[] input = Encoding.GetEncoding(charset).GetBytes(content);
            signer.BlockUpdate(input, 0, input.Length);

            //将签名结果转换为Base64
            return Convert.ToBase64String(signer.GenerateSignature());
        }

private static string GetDefaultBlogPostPartialUrl(DateTime date, string replacedle)
		{
			if (string.IsNullOrWhiteSpace(replacedle))
			{
				throw new ArgumentException("Value can't be null or whitespace.", "replacedle");
			}

			string replacedleSlug;

			try
			{
				// Encoding the replacedle as Cyrillic, and then back to ASCII, converts accented characters to their
				// unaccented version. We'll try/catch this, since it depends on the underlying platform whether
				// the Cyrillic code page is available.
				replacedleSlug = Encoding.ASCII.GetString(Encoding.GetEncoding("Cyrillic").GetBytes(replacedle)).ToLowerInvariant();
			}
			catch
			{
				replacedleSlug = replacedle.ToLowerInvariant();
			}

			// Strip all disallowed characters.
			replacedleSlug = Regex.Replace(replacedleSlug, @"[^a-z0-9\s-]", string.Empty);

			// Convert all runs of multiple spaces to a single space.
			replacedleSlug = Regex.Replace(replacedleSlug, @"\s+", " ").Trim();

			// Cap the length of the replacedle slug.
			replacedleSlug = replacedleSlug.Substring(0, replacedleSlug.Length <= 50 ? replacedleSlug.Length : 50).Trim();

			// Replace all spaces with hyphens.
			replacedleSlug = Regex.Replace(replacedleSlug, @"\s", "-").Trim('-');

			return "{0:yyyy}-{0:MM}-{0:dd}-{1}".FormatWith(date, replacedleSlug);
		}

public static string AesEncrypt(string encryptKey, string bizContent, string charset)
        {

            Byte[] keyArray = Convert.FromBase64String(encryptKey);
            byte[] toEncryptArray;
            if (string.IsNullOrEmpty(charset))
            {
                toEncryptArray = Encoding.UTF8.GetBytes(bizContent);
            }
            else
            {
                toEncryptArray = Encoding.GetEncoding(charset).GetBytes(bizContent);
            }

            RijndaelManaged rDel = new RijndaelManaged();
            rDel.Key = keyArray;
            rDel.Mode = CipherMode.CBC;
            rDel.Padding = PaddingMode.PKCS7;
            rDel.IV = AES_IV;

            ICryptoTransform cTransform = rDel.CreateEncryptor(rDel.Key, rDel.IV);
            Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);


            return Convert.ToBase64String(resultArray);

        }

private string NormalizeValue(string value)
        {
            
            value = value.Replace("$lt;", "<").
                Replace("$gt;", ">").Replace("$amp;", "&").Replace("$eq;", "=")
                .Replace("$percnt;", "%");

            value = System.Web.HttpUtility.UrlDecode(value, Encoding.GetEncoding("ISO-8859-9"));
            value = System.Web.HttpUtility.HtmlDecode(value).Replace("$plus;","+");
            

            return value;
        }

protected override string DoDecrypt(string cipherTextBase64, string charset, string privateKey)
        {
            using (RSACryptoServiceProvider rsaService = BuildRSAServiceProvider(Convert.FromBase64String(privateKey)))
            {
                byte[] data = Convert.FromBase64String(cipherTextBase64);

                //解密块最大长度
                int maxBlockSize = rsaService.KeySize / 8;

                //如果密文长度小于等于单个解密块最大长度，直接单次调用解密接口完成解密
                if (data.Length <= maxBlockSize)
                {
                    byte[] cipherbytes = rsaService.Decrypt(data, false);
                    return Encoding.GetEncoding(charset).GetString(cipherbytes);
                }

                //如果密文长度大于单个解密块最大长度，在内存中循环调用解密接口完成解密
                using (MemoryStream plainStream = new MemoryStream())
                {
                    using (MemoryStream cipherStream = new MemoryStream(data))
                    {
                        Byte[] buffer = new Byte[maxBlockSize];
                        int readSize = cipherStream.Read(buffer, 0, maxBlockSize);
                        while (readSize > 0)
                        {
                            Byte[] cipherBlock = new Byte[readSize];
                            Array.Copy(buffer, 0, cipherBlock, 0, readSize);
                            Byte[] plainBlock = rsaService.Decrypt(cipherBlock, false);
                            plainStream.Write(plainBlock, 0, plainBlock.Length);
                            readSize = cipherStream.Read(buffer, 0, maxBlockSize);
                        }
                    }
                    return Encoding.GetEncoding(charset).GetString(plainStream.ToArray());
                }

            }
        }

private static string GetPinyinChar(char c)
      {
         string str = c.ToString();
         if ((int)c >= 32 && (int)c <= 126)
         {
            return str;
         }
         byte[] array = new byte[2];
         Encoding gbEncoding;
         try
         {
            gbEncoding = System.Text.Encoding.GetEncoding("GB2312");
         }
         catch
         {
            throw new Exception("GB2312 Text Encoding is not registered, please register it on app start ");
         }
         array = gbEncoding.GetBytes(str);

         int i = (short)(array[0] - '\0') * 256 + ((short)(array[1] - '\0'));

         if (i < 0xB0A1) return "#";

         if (i < 0xB0C5) return "A";

         if (i < 0xB2C1) return "B";

         if (i < 0xB4EE) return "C";

         if (i < 0xB6EA) return "D";

         if (i < 0xB7A2) return "E";

         if (i < 0xB8C1) return "F";

         if (i < 0xB9FE) return "G";

         if (i < 0xBBF7) return "H";

         if (i < 0xBFA6) return "J";

         if (i < 0xC0AC) return "K";

         if (i < 0xC2E8) return "L";

         if (i < 0xC4C3) return "M";

         if (i < 0xC5B6) return "N";

         if (i < 0xC5BE) return "O";

         if (i < 0xC6DA) return "P";

         if (i < 0xC8BB) return "Q";

         if (i < 0xC8F6) return "R";

         if (i < 0xCBFA) return "S";

         if (i < 0xCDDA) return "T";

         if (i < 0xCEF4) return "W";

         if (i < 0xD1B9) return "X";

         if (i < 0xD4D1) return "Y";

         if (i < 0xD7FA) return "Z";

         return "#";
      }

public bool GetHash(string m_strSource, ref byte[] HashData)
        {
            //从字符串中取得Hash描述   
            byte[] Buffer;
            HashAlgorithm MD5 = HashAlgorithm.Create("MD5");
            Buffer = Encoding.GetEncoding("GB2312").GetBytes(m_strSource);
            HashData = MD5.ComputeHash(Buffer);

            return true;
        }

private Dictionary<string,string> BuildForm(HttpListenerContext ctx)
        {
            string[] items;

            string post;

            using (StreamReader sr = new StreamReader(ctx.Request.InputStream))
            {
                post = sr.ReadToEnd();
            }

            if (string.IsNullOrEmpty(post))
                return null;

            items = post.Split(new char[] { '&' }, StringSplitOptions.RemoveEmptyEntries);

            var dict = new Dictionary<string, string>();

            foreach (var item in items)
            {
                string[] kv = item.Split(new char[] { '=' }, StringSplitOptions.RemoveEmptyEntries);

                if (kv.Length == 2)
                {
                    kv[1] = System.Web.HttpUtility.UrlDecode(kv[1],Encoding.GetEncoding("iso-8859-9"));


                    dict.Add(kv[0], kv[1]);
                }

            }

            return dict;
        }

public static string NormalizeTurkishChars(string text)
        {
            byte[] tempBytes;
            tempBytes = Encoding.GetEncoding("ISO-8859-8").GetBytes(text);
            return Encoding.UTF8.GetString(tempBytes);
        }

public void Configure(IApplicationBuilder app, ILoggerFactory loggerFactory)
        {
            Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
            Console.OutputEncoding = Encoding.GetEncoding("GB2312");
            Console.InputEncoding = Encoding.GetEncoding("GB2312");
            
            app.UseDeveloperExceptionPage();

            app.UseImServer(new ImServerOptions
            {
                Redis = new FreeRedis.RedisClient(Configuration["ImServerOption:RedisClient"]),
                Servers = Configuration["ImServerOption:Servers"].Split(";"),
                Server = Configuration["ImServerOption:Server"]
            });
        }

private bool SendStr(String str, bool hexbool)
        {

            byte[] sendData = null;

            if (hexbool)
            {
                try
                {
                    sendData = strToHexByte(str.Trim());
                }
                catch (Exception)
                {
                    //throw;
                    MessageBox.Show("字符串转十六进制有误,请检测输入格式.", "错误!");
                    return false;
                }
            }
            else if (rbtnSendASCII.Checked)
            {
                //sendData = Encoding.ASCII.GetBytes(str);
                sendData = Encoding.GetEncoding("GBK").GetBytes(str);
            }
            else if (rbtnSendUTF8.Checked)
            {
                sendData = Encoding.UTF8.GetBytes(str);
            }
            else if (rbtnSendUnicode.Checked)
            {
                sendData = Encoding.Unicode.GetBytes(str);
            }
            else
            {
                sendData = Encoding.GetEncoding("GBK").GetBytes(str);
            }

            if (this.SendData(sendData))//发送数据成功计数
            {
                lblSendCount.Invoke(new MethodInvoker(delegate
                {
                    lblSendCount.Text = "发送:" + (int.Parse(lblSendCount.Text.Substring(3)) + sendData.Length).ToString();
                }));
                return true;
            }

            return false;
        }

private void _readBE()
                {
                    _entries = new List<string>();
                    {
                        var i = 0;
                        while (!m_io.IsEof)
                        {
                            _entries.Add(System.Text.Encoding.GetEncoding("ASCII").GetString(m_io.ReadBytesTerm(0, false, true, true)));
                            i++;
                        }
                    }
                }