ZXing是一個開源Java類庫用於解析多種格式的1D/2D條形碼。目標是能夠對QR編碼、Data Matrix、UPC的1D條形碼進行解碼。 其提供了多種平台下的客戶端包括:J2ME、J2SE和Android。
首先,在其官網http://code.google.com/p/zxing/上去下載源碼
編譯在其csharp目錄下打開zxing.csproj文件,新建一個工程。在編譯之前修改兩個錯誤:
源代碼中有兩處UTF-8的問題,會導致亂碼,
其一:com.google.zxing.qrcode.encoder.encoder類中的
internal const System.String DEFAULT_BYTE_MODE_ENCODING = "ISO-8859-1";
此處,將ISO-8859-1改為UTF-8
其二:com.google.zxing.qrcode.decoder.DecodedBitStreamParser類的成員
private const System.String UTF8 = "UTF8";
應將UTF8改為UTF-8
修改完之后,點重新生成編譯出新的dll文件。
將zxing.dll考入到你自己所需要的工程中,並添加引用。
這樣自己就可以試用了,主要是二維碼的生成和識別兩個用處:
二維碼的生成:
using com.google.zxing.qrcode; using com.google.zxing; using com.google.zxing.common; using ByteMatrix = com.google.zxing.common.ByteMatrix; using EAN13Writer = com.google.zxing.oned.EAN13Writer; using EAN8Writer = com.google.zxing.oned.EAN8Writer; using MultiFormatWriter = com.google.zxing.MultiFormatWriter; private void button1_Click(object sender, EventArgs e) { string content = textBox1.Text; ByteMatrix byteMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, 200, 200); Bitmap bitmap = toBitmap(byteMatrix); pictureBox1.Image = bitmap; //writeToFile(byteMatrix, System.Drawing.Imaging.ImageFormat.Png, sFD.FileName); //SaveFileDialog sFD = new SaveFileDialog(); //sFD.DefaultExt = "*.png|*.png"; //sFD.AddExtension = true; //try //{ // if (sFD.ShowDialog() == DialogResult.OK) // { // } //} //catch (Exception ex) //{ // MessageBox.Show(ex.Message); //} } public static void writeToFile(ByteMatrix matrix, System.Drawing.Imaging.ImageFormat format, string file) { Bitmap bmap = toBitmap(matrix); bmap.Save(file, format); } public static Bitmap toBitmap(ByteMatrix matrix) { int width = matrix.Width; int height = matrix.Height; Bitmap bmap = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format32bppArgb); for (int x = 0; x < width; x++) { for (int y = 0; y < height; y++) { bmap.SetPixel(x, y, matrix.get_Renamed(x, y) != -1 ? ColorTranslator.FromHtml("0xFF000000") : ColorTranslator.FromHtml("0xFFFFFFFF")); } } return bmap; }
二維碼的讀取識別:
private void button1_Click(object sender, EventArgs e) { if (this.openFileDialog1.ShowDialog() != DialogResult.OK) { return; } Image img = Image.FromFile(this.openFileDialog1.FileName); Bitmap bmap; try { bmap = new Bitmap(img); } catch (System.IO.IOException ioe) { MessageBox.Show(ioe.ToString()); return; } if (bmap == null) { MessageBox.Show("Could not decode image"); return; } LuminanceSource source = new RGBLuminanceSource(bmap, bmap.Width, bmap.Height); com.google.zxing.BinaryBitmap bitmap = new com.google.zxing.BinaryBitmap(new COMMON.HybridBinarizer(source)); Result result; try { result = new MultiFormatReader().decode(bitmap); } catch(ReaderException re) { MessageBox.Show(re.ToString()); return; } MessageBox.Show(result.Text); }