C# 利用ZXing.Net来生成条形码和二维码

  1 using System;
  2  System.Collections.Generic;
  3  System.Drawing;
  4  System.Drawing.Imaging;
  5  System.Linq;
  6  System.Text;
  7  System.Threading.Tasks;
  8  ZXing;
  9  ZXing.Common;
 10  ZXing.QrCode;
 11  ZXing.QrCode.Internal;
 12 
 13 namespace DemoQrCode
 14 {
 15     /// <summary>
 16     /// 描述：条形码和二维码帮助类
 17      时间：2018-02-18
 18     </summary>
 19     public class BarcodeHelper
 20     {
 21         22         生成二维码
 23         24        <param name="text">内容</param>
 25        <param name="width">宽度 26        <param name="height">高度 27        <returns></returns>
 28         static Bitmap Generate1(string text,int width,1)">int height)
 29         {
 30             BarcodeWriter writer = new BarcodeWriter();
 31             writer.Format = BarcodeFormat.QR_CODE;
 32             QrCodeEncodingOptions options =  QrCodeEncodingOptions()
 33             {
 34                 DisableECI = true,1)">//设置内容编码
 35                 CharacterSet = "UTF-8",1)">设置二维码的宽度和高度
 36                 Width = width, 37                 Height = height,1)"> 38                 Margin = 1设置二维码的边距,单位不是固定像素
 39             };
 40            
 41             writer.Options = options;
 42             Bitmap map = writer.Write(text);
 43             return map;
 44         }
 45 
 46          47          生成一维条形码
 48          49          50          51          52          53         static Bitmap Generate2( 54  55             BarcodeWriter writer =  56             使用ITF 格式，不能被现在常用的支付宝、微信扫出来
 57             如果想生成可识别的可以使用 CODE_128 格式
 58             writer.Format = BarcodeFormat.ITF;
 59             writer.Format = BarcodeFormat.CODE_39;
 60             EncodingOptions options =  EncodingOptions()
 61  62                 Width = 63                 Height = 64                 Margin = 2
 65  66             writer.Options = 67             Bitmap map = 68              69  70 
 71          72          生成带Logo的二维码
 73          74          75          76          77         static Bitmap Generate3( 78  79             Logo 图片
 80             string logoPath = System.AppDomain.CurrentDomain.BaseDirectory + @"imglogo.png";
 81             Bitmap logo =  Bitmap(logoPath);
 82             构造二维码写码器
 83             MultiFormatWriter writer =  MultiFormatWriter();
 84             Dictionary<EncodeHintType,1)">object> hint = new Dictionary<EncodeHintType,1)">object>();
 85             hint.Add(EncodeHintType.CHARACTER_SET,);
 86             hint.Add(EncodeHintType.ERROR_CORRECTION,ErrorCorrectionLevel.H);
 87             hint.Add(EncodeHintType.MARGIN,2);旧版本不起作用，需要手动去除白边
 88             
 89             生成二维码 
 90             BitMatrix bm = writer.encode(text,BarcodeFormat.QR_CODE,width+30,height+30,hint);
 91             bm = deleteWhite(bm);
 92             BarcodeWriter barcodeWriter =  93             Bitmap map = barcodeWriter.Write(bm);
 94 
 95             获取二维码实际尺寸（去掉二维码两边空白后的实际尺寸）
 96             int[] rectangle = bm.getEnclosingRectangle();
 97             
 98             计算插入图片的大小和位置
 99             int middleW = Math.Min((int)(rectangle[2] / 3),logo.Width);
100             int middleH = Math.Min((3] / 101             int middleL = (map.Width - middleW) / 2102             int middleT = (map.Height - middleH) / 103 
104             Bitmap bmpimg =  Bitmap(map.Width,map.Height,PixelFormat.Format32bppArgb);
105             using (Graphics g = Graphics.FromImage(bmpimg))
106 107                 g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
108                 g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
109                 g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
110                 g.DrawImage(map,1)">0,1)">0111                 白底将二维码插入图片
112                 g.FillRectangle(Brushes.White,middleL,middleT,middleW,middleH);
113                 g.DrawImage(logo,1)">114             }
115              bmpimg;
116 117 
118         119          删除默认对应的空白
120         121         <param name="matrix"></param>
122         123         private static BitMatrix deleteWhite(BitMatrix matrix)
124 125             int[] rec = matrix.getEnclosingRectangle();
126             int resWidth = rec[2] + 127             int resHeight = rec[3] + 128 
129             BitMatrix resMatrix =  BitMatrix(resWidth,resHeight);
130             resMatrix.clear();
131             for (int i = 0; i < resWidth; i++)
132 133                 int j = 0; j < resHeight; j++134                 {
135                     if (matrix[i + rec[0],j + rec[]])
136                         resMatrix[i,j]=true137                 }
138 139              resMatrix;
140 141     }
142 }