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C#如何用ThoughtWorks生成二維碼

 更新時(shí)間：2020年08月06日 14:21:28   作者：彭澤0902  
這篇文章主要介紹了C#如何用ThoughtWorks生成二維碼，文中講解非常細(xì)致，幫助大家更好的理解和學(xué)習(xí)，感興趣的朋友可以了解下

       在現(xiàn)在的項(xiàng)目中，較多的使用到二維碼，前面介紹過一篇使用Gma生成二維碼的操作，現(xiàn)在介紹一個(gè)第三方組件，主要介紹生成二維碼，二維碼的解析，以及對二維碼的相關(guān)信息的選擇，現(xiàn)在介紹ThoughtWorks用于生成二維碼，本隨筆采用.net4.5和C#6.0語法,也可以進(jìn)行查看ThoughtWorks的底層源碼。

1.生成二維碼：

    /// <summary>
    /// 生成二維碼
    /// </summary>
    /// <param name="content">帶生成二維碼的字符串</param>
    /// <param name="path">路徑</param>
    /// <returns></returns>
    public static string CreatehoughtWorksQrCode(string content, string path)
    {
      if (string.IsNullOrEmpty(content))
      {
        throw new ArgumentNullException(content);
      }
      if (string.IsNullOrEmpty(path))
      {
        throw new ArgumentNullException(path);
      }
      var qrCodeEncoder = new QRCodeEncoder
      {
        QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE,
        QRCodeScale = 4,
        QRCodeVersion = 8,
        QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M
      };
      Image image = qrCodeEncoder.Encode(content);
      var filename = DateTime.Now.ToString("yyyymmddhhmmssfff") + ".jpg";
      var filepath = string.Format("{0}{1}", path, filename);
      FileStream fs = null;
      try
      {
        fs = new FileStream(filepath, FileMode.OpenOrCreate, FileAccess.Write);
        image.Save(fs, System.Drawing.Imaging.ImageFormat.Jpeg);
      }
      catch (IOException ex)
      {
        throw new IOException(ex.Message);
      }
      finally
      {
        if (fs != null) fs.Close();
        image.Dispose();
      }
      return CodeDecoder(filepath);
    }

2.解析二維碼：

    /// <summary>
    /// 二維碼解碼
    /// </summary>
    /// <param name="filePath">圖片路徑</param>
    /// <returns></returns>
    public static string CodeDecoder(string filePath)
    {
      if (string.IsNullOrEmpty(filePath))
      {
        throw new ArgumentNullException(filePath);
      }
      try
      {
        if (!System.IO.File.Exists(filePath))
          return null;
        var myBitmap = new Bitmap(Image.FromFile(filePath));
        var decoder = new QRCodeDecoder();
        var decodedString = decoder.decode(new QRCodeBitmapImage(myBitmap));
        return decodedString;
      }
      catch (Exception ex)
      {
        throw new Exception(ex.Message);
      }
    }

3.選擇生成的二維碼參數(shù)：

    /// <summary>
    /// 選擇生成二維碼的相關(guān)類型
    /// <param name="strData">要生成的文字或者數(shù)字，支持中文。如： "4408810820 深圳－廣州" 或者：4444444444</param>
    /// <param name="qrEncoding">三種尺寸：BYTE ，ALPHA_NUMERIC，NUMERIC</param>
    /// <param name="level">大小：L M Q H</param>
    /// <param name="version">版本：如 8</param>
    /// <param name="scale">比例：如 4</param>
    /// <returns></returns>
    /// </summary>
    public void CreateCode_Choose(string strData, string qrEncoding, string level, int version, int scale)
    {
      var qrCodeEncoder = new QRCodeEncoder();
      var encoding = qrEncoding;
      switch (encoding)
      {
        case "Byte":
          qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;
          break;
        case "AlphaNumeric":
          qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.ALPHA_NUMERIC;
          break;
        case "Numeric":
          qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.NUMERIC;
          break;
        default:
          qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;
          break;
      }

      qrCodeEncoder.QRCodeScale = scale;
      qrCodeEncoder.QRCodeVersion = version;
      switch (level)
      {
        case "L":
          qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.L;
          break;
        case "M":
          qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;
          break;
        case "Q":
          qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.Q;
          break;
        default:
          qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.H;
          break;
      }
      Image image = null;
      FileStream fs = null;
      try
      {
        //文字生成圖片
        image = qrCodeEncoder.Encode(strData);
        var filename = DateTime.Now.ToString("yyyymmddhhmmssfff") + ".jpg";
        var filepath = HttpContext.Current.Server.MapPath(@"~\Upload") + "\\" + filename;
        fs = new FileStream(filepath, FileMode.OpenOrCreate, FileAccess.Write);
        image.Save(fs, System.Drawing.Imaging.ImageFormat.Jpeg);
      }
      catch (IOException ex)
      {
        throw new IOException(ex.Message);
      }
      finally
      {
        if (fs != null) fs.Close();
        if (image != null) image.Dispose();
      }
    }

以上就是C#如何用ThoughtWorks生成二維碼的詳細(xì)內(nèi)容，更多關(guān)于c#生成二維碼的資料請關(guān)注腳本之家其它相關(guān)文章！

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