后台：
/// 生成二维码 /// </summary> /// <param name="strData">要生成的文字或者数字，支持中文。如： "4408810820 深圳－广州" 或者：4444444444</param> /// <param name="qrEncoding">三种尺寸：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> public ActionResult CreateCode_Choose(string strData, string qrEncoding, string level, int version, int scale) { QRCodeEncoder qrCodeEncoder = new QRCodeEncoder(); string 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; } //文字生成图片 Image image = qrCodeEncoder.Encode(strData); string filename = DateTime.Now.ToString("yyyymmddhhmmssfff").ToString() + ".jpg"; string filepath = Server.MapPath(@"~\Upload") + "\\" + filename; //如果文件夹不存在，则创建 //if (!Directory.Exists(filepath)) // Directory.CreateDirectory(filepath); System.IO.FileStream fs = new System.IO.FileStream(filepath, System.IO.FileMode.OpenOrCreate, System.IO.FileAccess.Write); image.Save(fs, System.Drawing.Imaging.ImageFormat.Jpeg); fs.Close(); image.Dispose(); return Content(@"/Upload/" + filename); } |
