C#利用ZXing.Net生成条形码和二维码

using System;using System.Collections.Generic;using System.Drawing;using System.Drawing.Imaging;using System.Linq;using System.Text;using System.Threading.Tasks;using ZXing;using ZXing.Common;using ZXing.QrCode;using ZXing.QrCode.Internal;namespace DemoQrCode{ /// <summary> /// 描述：条形码和二维码帮助类 /// 时间：2018-02-18 /// </summary> public class BarcodeHelper {  /// <summary>  /// 生成二维码  /// </summary>  /// <param name="text">内容</param>  /// <param name="width">宽度</param>  /// <param name="height">高度</param>  /// <returns></returns>  public static Bitmap Generate1(string text,int width,int height)  {   BarcodeWriter writer = new BarcodeWriter();   writer.Format = BarcodeFormat.QR_CODE;   QrCodeEncodingOptions options = new QrCodeEncodingOptions()   {    DisableECI = true,//设置内容编码    CharacterSet = "UTF-8", //设置二维码的宽度和高度    Width = width,    Height = height,    Margin = 1//设置二维码的边距,单位不是固定像素   };      writer.Options = options;   Bitmap map = writer.Write(text);   return map;  }  /// <summary>  /// 生成一维条形码  /// </summary>  /// <param name="text">内容</param>  /// <param name="width">宽度</param>  /// <param name="height">高度</param>  /// <returns></returns>  public static Bitmap Generate2(string text,int width,int height)  {   BarcodeWriter writer = new BarcodeWriter();   //使用ITF 格式，不能被现在常用的支付宝、微信扫出来   //如果想生成可识别的可以使用 CODE_128 格式   //writer.Format = BarcodeFormat.ITF;   writer.Format = BarcodeFormat.CODE_39;   EncodingOptions options = new EncodingOptions()   {    Width = width,    Height = height,    Margin = 2   };   writer.Options = options;   Bitmap map = writer.Write(text);   return map;  }  /// <summary>  /// 生成带Logo的二维码  /// </summary>  /// <param name="text">内容</param>  /// <param name="width">宽度</param>  /// <param name="height">高度</param>  public static Bitmap Generate3(string text, int width, int height)  {   //Logo 图片   string logoPath = System.AppDomain.CurrentDomain.BaseDirectory + @"/img/logo.png";   Bitmap logo = new Bitmap(logoPath);   //构造二维码写码器   MultiFormatWriter writer = new MultiFormatWriter();   Dictionary<EncodeHintType, object> hint = new Dictionary<EncodeHintType, object>();   hint.Add(EncodeHintType.CHARACTER_SET, "UTF-8");   hint.Add(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);   //hint.Add(EncodeHintType.MARGIN, 2);//旧版本不起作用，需要手动去除白边      //生成二维码    BitMatrix bm = writer.encode(text, BarcodeFormat.QR_CODE, width+30, height+30, hint);   bm = deleteWhite(bm);   BarcodeWriter barcodeWriter = new BarcodeWriter();   Bitmap map = barcodeWriter.Write(bm);   //获取二维码实际尺寸（去掉二维码两边空白后的实际尺寸）   int[] rectangle = bm.getEnclosingRectangle();      //计算插入图片的大小和位置   int middleW = Math.Min((int)(rectangle[2] / 3), logo.Width);   int middleH = Math.Min((int)(rectangle[3] / 3), logo.Height);   int middleL = (map.Width - middleW) / 2;   int middleT = (map.Height - middleH) / 2;   Bitmap bmpimg = new Bitmap(map.Width, map.Height, PixelFormat.Format32bppArgb);   using (Graphics g = Graphics.FromImage(bmpimg))   {    g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;    g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;    g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;    g.DrawImage(map, 0, 0,width,height);    //白底将二维码插入图片    g.FillRectangle(Brushes.White, middleL, middleT, middleW, middleH);    g.DrawImage(logo, middleL, middleT, middleW, middleH);   }   return bmpimg;  }  /// <summary>  /// 删除默认对应的空白  /// </summary>  /// <param name="matrix"></param>  /// <returns></returns>  private static BitMatrix deleteWhite(BitMatrix matrix)  {   int[] rec = matrix.getEnclosingRectangle();   int resWidth = rec[2] + 1;   int resHeight = rec[3] + 1;   BitMatrix resMatrix = new BitMatrix(resWidth, resHeight);   resMatrix.clear();   for (int i = 0; i < resWidth; i++)   {    for (int j = 0; j < resHeight; j++)    {     if (matrix[i + rec[0], j + rec[1]])      resMatrix[i, j]=true;    }   }   return resMatrix;  } }}