C#二维码生成 ZXing例子.doc

关于C#使用Zxing生成二维码以及对图片二维码解码的示例代码Zxing C#版的库在/ZXing.Net..zip最新版本 2013-11-4日最好可以看看完整的例子。ASPX网站代码在/share/link?shareid=3129567452&uk=721874100原来用VS2005的，VS2010也可以打开的。其它版本没试过，应该都可以，毕竟里面用的东西几乎没有什么东西。下面是我写的一个CodeHelper类，很简单只是对ZXing的部分封装而已。参考了网上的java代码的教程，C#很少。貌似版本也不对啊，有几个类没有。using System;using System.Collections.Generic;using System.Text;using ZXing;using ZXing.QrCode;using ZXing.Common;using System.Drawing;using System.IO;using System.Drawing.Imaging;using System.Collections;namespace Coding public class CodeHelper private string _charset = UTF-8;/默认的貌似中文不能识别，解码后会是？号。你可以试试改成其它编码 public string CHARSET get return _charset; set _charset = value; public int SaveTo(Bitmap bitmap, string filepath, string filename) try bitmap.Save(filepath + filename); return 0; catch (Exception) return -1; public Bitmap encode(string content, int width, int height, BarcodeFormat barcodeFormat, IDictionary hints) BitMatrix byteMatrix = new MultiFormatWriter().encode(content, barcodeFormat, width, height, hints); Bitmap bitmap = toBitmap(byteMatrix); return bitmap; public Bitmap encode(string content, int width, int height,BarcodeFormat barcodeFormat) BitMatrix byteMatrix = new MultiFormatWriter().encode(content, barcodeFormat, width, height); Bitmap bitmap = toBitmap(byteMatrix); return bitmap; public static Bitmap toBitmap(BitMatrix 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, matrixx, y ? ColorTranslator.FromHtml(0xFF000000) : ColorTranslator.FromHtml(0xFFFFFFFF); return bmap; public int encodeAndSave(string content, string path, int width, int height,BarcodeFormat barcodeFormat) return SaveTo(encode(content, width, height, barcodeFormat), path, ); public int decode(string bmppath, IDictionary hints, out Result result) Bitmap bmap = new Bitmap(bmppath); BitmapLuminanceSource source = new BitmapLuminanceSource(bmap); BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source); result = new MultiFormatReader().decode(bitmap, hints); return 0; 然后下面是一个调用例子，里面有些乱码需要删掉的，我复制到word时出现的。ASPX前台页面 二t维?码?生成与?解a码? .container width:960px; margin:0 auto; border:1px solid #ff0000; .container div 编码?内容Y：o为a空?时将?随?机生成。 logo图?片?：o 编码?内容Y：o 二t维?码?图?片?：o 二t维?码?解a码?结果?：o ASPX的后台代码， using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using Coding;using ZXing;using System.Text;using System.Collections;using System.Collections.Generic;using System.Drawing;using System.IO;public partial class _Default : System.Web.UI.Page public string CHARSET = UTF-8; public string CodeName get return ViewStatecodename as string; set ViewStatecodename = value; protected void Page_Load(object sender, EventArgs e) / / 创建二t维?码?并保存? / / 编码?内容Y，?字?符?串?（没?试?过y最?长有D多长，?不?能为a空?字?符?串?）? / protected void CreateQRCode(string content,string path) CodeHelper helper = new CodeHelper(); int width = 256; int height = 256; BarcodeFormat barcodeFormat = BarcodeFormat.QR_CODE; /下面是影响编码的一些参数 Dictionary hints = new Dictionary(); hints.Add(EncodeHintType.MARGIN, 1);/边距，知道HTML的话应该能理解它是什么，不能理解的话，改成4或者注释掉试试生成的效果。 hints.Add(EncodeHintType.CHARACTER_SET, CHARSET); hints.Add(EncodeHintType.ERROR_CORRECTION, ZXing.QrCode.Internal.ErrorCorrectionLevel.H);/设置容错等级，不设置这个，之后加了logo图片就不能识别了。可以改变试试查看ErrorCorrectionLevel枚举应该能知道它有什么值。 helper.SaveTo(helper.encode(content, width, height, barcodeFormat,hints),path,); protected void btnEncode_Click(object sender, EventArgs e) string randSeedStr = 中D文ABCDEFGHIJKLKDLKDKLDLK我你他AFJhibiebubiud他何必都id1241232341234; /string randSeedStr = ABCDEFGHIJKLKDLKDKLDLKAFJhibiebubiudid1241232341234; string path = DateTime.Now.ToString(yyyyMMddHHmmss) + .png; string content = GetContent(); if (string.IsNullOrEmpty(content) content = GetRandomStr(randSeedStr); CreateQRCode(content, Server.MapPath(/codes/) + path); /=图?片?中D间?加logo图片片?= System.Drawing.Image bitmap = System.Drawing.Image.FromFile(Server.MapPath(/codes/) + path); string logopath = Server.MapPath(/) + logo.png; if (File.Exists(logopath) try File.Delete(logopath); catch fileUpload.SaveAs(logopath); System.Drawing.Image logo = System.Drawing.Image.FromFile(logopath); Graphics g = Graphics.FromImage(bitmap); /logo图?片?的?大小?，?不?要a太?大，?参?考?网?上?50*50貌2似?很好? float logoWidth = 50; float logoHeight = 50; float centerX = (bitmap.Width -logoWidth) / 2; float centerY = (bitmap.Height - logoHeight) / 2; g.DrawImage(logo, centerX, centerY, logoWidth, logoHeight); g.Save(); bitmap.Save(Server.MapPath(/codes/) + logo.png); CodeName =logo.png; /= /默?认?保存?到?此?位?置? this.imgCode.ImageUrl = /codes/logo.png; this.lbContent.Text = content; protected void btnDecode_Click(object sender, EventArgs e) CodeHelper helper = new CodeHelper(); Result result = null; Dictionary hints = new Dictionary(); hints.Add(DecodeHintType.CHARACTER_SET, CHARSET); helper.decode(Server.MapPath(/codes/) + CodeName, hints, out result); if (result != null) this.lbResult.Text = result.Text; else this.lbResult.Text = 失败！?; protected string GetContent() return tbContent.Text; protected string GetRandomStr(string randString) char randChars = randString