最近二维码用的很多,同时给了个zxing.dll和demo,用着还不错,就想着自己看看源码。于是搜索到一下资料:
ZXing是一个开源Java类库用于解析多种格式的1D/2D条形码。目标是能够对QR编码、Data Matrix、UPC的1D条形码进行解码。 其提供了多种平台下的客户端包括:J2ME、J2SE和Android。
首先,在其官网http://code.google.com/p/zxing/上去下载源码
编译在其csharp目录下打开zxing.csproj文件,新建一个工程。在编译之前修改两个错误:
源代码中有两处UTF-8的问题,会导致乱码,
其一:com.google.zxing.qrcode.encoder.encoder类中的
internal const System.String DEFAULT_BYTE_MODE_ENCODING = "ISO-8859-1";
此处,将ISO-8859-1改为UTF-8
其二:com.google.zxing.qrcode.decoder.DecodedBitStreamParser类的成员
private const System.String UTF8 = "UTF8";
应将UTF8改为UTF-8
修改完之后,点重新生成编译出新的dll文件。
将zxing.dll考入到你自己所需要的工程中,并添加引用。
这样自己就可以试用了,主要是二维码的生成和识别两个用处:
简单调用:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using ZXing;
using ZXing.QrCode;
using ZXing.Common;
using ZXing.Rendering;
using ZXing.QrCode.Internal;
options = new QrCodeEncodingOptions { DisableECI = true,//将该属性设置为真的可以使用UTF-8编码 ErrorCorrection = ErrorCorrectionLevel.L,//指定使用误差校正的程度 CharacterSet = "UTF-8",//指定所使用的字符编码 PureBarcode = false,//不要把内容字符串到输出图像 Width = pictureBoxQr.Width, Height = pictureBoxQr.Height, Margin = 0 //边界 }; writer = new BarcodeWriter(); writer.Format = BarcodeFormat.QR_CODE; writer.Options = options; } Bitmap bitmap = writer.Write(textBoxText.Text); pictureBoxQr.Image = bitmap;
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; }
二维码的读取识别:
rivate 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); }