


.NET C# uses ZXing to generate and identify QR codes/barcodes
一、首先下载 ZXing.Net
地址是:http://zxingnet.codeplex.com/releases/view/117068
然后将对应版本 .dll 拖入项目中,再引用之。
主要是用 BarcodeWriter、BarcodeReader。
二、生成二维码
.NET 平台的代码始终要简单些。
QrCodeEncodingOptions options = new QrCodeEncodingOptions(); options.CharacterSet = "UTF-8"; options.DisableECI = true; // Extended Channel Interpretation (ECI) 主要用于特殊的字符集。并不是所有的扫描器都支持这种编码。 options.ErrorCorrection = ZXing.QrCode.Internal.ErrorCorrectionLevel.H; // 纠错级别 options.Width = 300; options.Height = 300; options.Margin = 1; // options.Hints,更多属性,也可以在这里添加。 BarcodeWriter writer = new BarcodeWriter(); writer.Format = BarcodeFormat.QR_CODE; writer.Options = options; Response.Clear(); using (Bitmap bmp = writer.Write("http://www.cftea.com")) // Write 具备生成、写入两个功能 { MemoryStream ms = new MemoryStream(); { bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Png); Response.ContentType = "image/png"; Response.BinaryWrite(ms.ToArray()); } } Response.End();
纠错级别:
L - 约 7% 纠错能力。
M - 约 15% 纠错能力。
Q - 约 25% 纠错能力。
H - 约 30% 纠错能力。
三、生成条形码
QrCodeEncodingOptions options = new QrCodeEncodingOptions(); options.CharacterSet = "UTF-8"; options.Width = 300; options.Height = 50; options.Margin = 1; options.PureBarcode = false; // 是否是纯码,如果为 false,则会在图片下方显示数字 BarcodeWriter writer = new BarcodeWriter(); writer.Format = BarcodeFormat.CODE_128; writer.Options = options; Response.Clear(); using (Bitmap bmp = writer.Write("12345678")) { MemoryStream ms = new MemoryStream(); { bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Png); Response.ContentType = "image/png"; Response.BinaryWrite(ms.ToArray()); } } Response.End();
四、识别二维码、条形码
BarcodeReader reader = new BarcodeReader(); reader.Options.CharacterSet = "UTF-8"; using (Bitmap bmp = new Bitmap("D:\\qr.png")) { Result result = reader.Decode(bmp); Response.Write(result.Text); }
总结
好了,以上就是这篇文章的全部内容了,如果要改变背景颜色、画头像,可以直接在 Bitmap 中画,希望本文的内容对大家的学习或者工作能带来一定的帮助
更多.NET C#利用ZXing生成、识别二维码/条形码相关文章请关注PHP中文网!

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