zxing二维码

时间：2015-06-04 13:41:56 阅读：263 评论：0 收藏：0 [点我收藏+]

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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;

二维码的生成：

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);   

}

zxing二维码

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原文地址：http://www.cnblogs.com/liaocheng/p/4551353.html

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