Asp.Net生成二维码

 1 ????????????try 2 ????????????{ 3 ????????????????while (this.UploadQueue.Count > 0) 4 ????????????????{ 5 ????????????????????var row = this.UploadQueue.Dequeue(); 6 ????????????????????string url = row[2].ToString(); 7 ????????????????????GC.Collect(); 8 ????????????????????using (var ms = new MemoryStream()) 9 ????????????????????{10 ????????????????????????string strName = row[1].ToString();11 ????????????????????????strName = System.IO.Path.GetFileNameWithoutExtension(strName.Substring(strName.LastIndexOf(‘/‘) + 1));12 13 ????????????????????????#region 保存到本地14 ????????????????????????ThoughtWorks.QRCode.Codec.QRCodeEncoder qrc = new ThoughtWorks.QRCode.Codec.QRCodeEncoder();15 ????????????????????????qrc.QRCodeEncodeMode = ThoughtWorks.QRCode.Codec.QRCodeEncoder.ENCODE_MODE.BYTE;16 ????????????????????????qrc.QRCodeErrorCorrect = ThoughtWorks.QRCode.Codec.QRCodeEncoder.ERROR_CORRECTION.M;17 ????????????????????????qrc.QRCodeScale = 8;18 ????????????????????????qrc.QRCodeVersion = 4;19 20 ????????????????????????Bitmap bitmap = qrc.Encode(url);21 ????????????????????????string path = BaseDirectory + "\\二维码图片\\";22 ????????????????????????if (Directory.Exists(path) == false) Directory.CreateDirectory(path);23 ????????????????????????string filename = System.IO.Path.Combine(path, strName + ".png"); ;//保存到本地24 ????????????????????????bitmap.Save(filename: filename);25 ????????????????????????bitmap.Dispose();26 ????????????????????????#endregion27 ????????????????????}28 ????????????????}29 ????????????}30 ????????????catch (Exception exception)31 ????????????{32 ????????????????Show(exception.Message);33 ????????????}

 ?1 ????????protected void Button1_Click(object sender, EventArgs e) ?2 ????????{ ?3 ????????????string filePath = ""; ; ?4 ????????????FileStream stream = System.IO.File.Open(filePath, FileMode.Open, FileAccess.Read); ?5 ????????????//1. Reading from a binary Excel file (‘97-2003 format; *.xls) ?6 ????????????//IExcelDataReader excelReader = ExcelReaderFactory.CreateBinaryReader(stream); ?7 ??8 ????????????//2. Reading from a OpenXml Excel file (2007 format; *.xlsx) ?9 ????????????//IExcelDataReader excelReader = ExcelReaderFactory.CreateOpenXmlReader(stream); 10 ????????????string strExtension = System.IO.Path.GetExtension(filePath); 11 ????????????IExcelDataReader excelReader = null; 12 ????????????//区别excel版本 13 ????????????if (strExtension.IndexOf("xlsx")>=0) 14 ????????????{ 15 ????????????????excelReader = ExcelReaderFactory.CreateOpenXmlReader(stream); 16 ????????????} 17 ????????????else 18 ????????????{ 19 ????????????????excelReader = ExcelReaderFactory.CreateBinaryReader(stream); 20 ????????????} 21 ????????????excelReader.IsFirstRowAsColumnNames = false; 22 ????????????DataSet result = excelReader.AsDataSet(); 23 ????????????for (int i = 1; i < result.Tables["Sheet1"].Rows.Count; i++) 24 ????????????{ 25 ????????????????string strUrl = Convert.ToString(result.Tables["Sheet1"].Rows[i][0]); 26 ?????????????????27 ????????????????string strName = result.Tables["Sheet1"].Rows[i][1].ToString(); 28 ?29 ????????????????///Andeliya/AwardWeb/index?id=1 30 ????????????????string href = strUrl; 31 ????????????????string empleename = strName;//id; //strUrl.Remove(0, 38); 32 ????????????????var codeParams = CodeDescriptor.Init("M", href, "Zero", "12"); 33 ????????????????if (codeParams == null || !codeParams.TryEncode()) 34 ????????????????{ 35 ????????????????????Response.StatusCode = (int)HttpStatusCode.BadRequest; 36 ????????????????????Response.Write("参数不能为空！"); 37 ????????????????} 38 ????????????????// Render the QR code as an image 39 ????????????????System.GC.Collect(); 40 ????????????????using (var ms = new MemoryStream()) 41 ????????????????{ 42 ????????????????????codeParams.Render(ms); 43 ????????????????????#region 保存到本地 44 ????????????????????System.IO.MemoryStream msd = new System.IO.MemoryStream(ms.GetBuffer()); 45 ????????????????????System.Drawing.Image img = System.Drawing.Image.FromStream(msd); 46 ????????????????????var temp = string.Format(Server.MapPath("~/res/2017101811/")); 47 ????????????????????if (!Directory.Exists(temp)) { Directory.CreateDirectory(temp); } 48 ????????????????????string path = temp + "/" + empleename + ".png";//保存到本地 49 ????????????????????img.Save(path);//随机名 ?50 ????????????????????//return Controller.File(path, "application/msword", empleename + "的二维码" + DateTime.Now.ToString("yyMMddhhmmss") + ".png");//输出到浏览器 51 ????????????????????#endregion 52 ????????????????} 53 ????????????????Response.Write(empleename + "二维码生成成功"); 54 ????????????????Response.Write("<br/>"); 55 ????????????} 56 ????????????Response.Write("二维码生成成功！"); 57 ????????} 58 ????????/// <summary> 59 ????????/// ?60 ????????/// </summary> 61 ????????internal class CodeDescriptor 62 ????????{ 63 ????????????public ErrorCorrectionLevel Ecl; 64 ????????????public string Content; 65 ????????????public QuietZoneModules QuietZones; 66 ????????????public int ModuleSize; 67 ????????????public BitMatrix Matrix; 68 ????????????public string ContentType; 69 ????????????/// <summary> 70 ????????????/// Parse QueryString that define the QR code properties 71 ????????????/// </summary> 72 ????????????/// <param name="request">HttpRequest containing HTTP GET data</param> 73 ????????????/// <returns>A QR code descriptor object</returns> 74 ????????????public static CodeDescriptor Init(string e, string t, string q, string s) 75 ????????????{ 76 ????????????????var cp = new CodeDescriptor(); 77 ????????????????// Error correction level 78 ????????????????if (!Enum.TryParse(e, out cp.Ecl)) 79 ????????????????????cp.Ecl = ErrorCorrectionLevel.L; 80 ????????????????// Code content to encode 81 ????????????????cp.Content = t; 82 ????????????????// Size of the quiet zone 83 ????????????????if (!Enum.TryParse(q, out cp.QuietZones)) 84 ????????????????????cp.QuietZones = QuietZoneModules.Two; 85 ????????????????// Module size 86 ????????????????if (!int.TryParse(s, out cp.ModuleSize)) 87 ????????????????????cp.ModuleSize = 12; 88 ????????????????return cp; 89 ????????????} 90 ????????????/// <summary> 91 ????????????/// Encode the content with desired parameters and save the generated Matrix 92 ????????????/// </summary> 93 ????????????/// <returns>True if the encoding succeeded, false if the content is empty or too large to fit in a QR code</returns> 94 ????????????public bool TryEncode() 95 ????????????{ 96 ????????????????var encoder = new QrEncoder(Ecl); 97 ????????????????QrCode qr; 98 ????????????????if (!encoder.TryEncode(Content, out qr)) 99 ????????????????????return false;100 101 ????????????????Matrix = qr.Matrix;102 ????????????????return true;103 ????????????}104 ????????????/// <summary>105 ????????????/// Render the Matrix as a PNG image106 ????????????/// </summary>107 ????????????/// <param name="ms">MemoryStream to store the image bytes into</param>108 ????????????internal void Render(MemoryStream ms)109 ????????????{110 ????????????????var render = new GraphicsRenderer(new FixedModuleSize(ModuleSize, QuietZones));111 ????????????????render.WriteToStream(Matrix, ImageFormat.Png, ms);112 ????????????????ContentType = "image/png";113 ????????????}114 ????????}