asp.net生成二维码 源代码（ThoughtWorks.QRCode）

【实例截图】

【核心代码】

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Drawing.Imaging;
using System.IO;
using System.Drawing;
using Newtonsoft.Json.Linq;
using ThoughtWorks.QRCode.Codec;

namespace 生成二维码
{
    /// <summary>
    /// QrCode 的摘要说明
    /// </summary>
    public class QrCode : IHttpHandler
    {

        public void ProcessRequest(HttpContext context)
        {
            //生成二维码
            context.Response.ClearContent();
            context.Response.ContentType = "image/Jpeg";
            context.Response.BinaryWrite(QRcode(GenerateToken()));
            context.Response.Flush();
        }

        //生成32位随机token
        private string GenerateToken()
        {
            int number;
            char code;
            string token = String.Empty;
            System.Random random = new Random();
            for (int i = 0; i < 32; i  )
            {
                number = random.Next();
                if (number % 2 == 0)
                    code = (char)('0'   (char)(number % 10));
                else
                    code = (char)('A'   (char)(number % 26));
                token  = code.ToString();
            }
            return token;
        }

        //二维码输出流
        public byte[] QRcode(string url)
        {
            QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();
            qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE; //编码方式(注意：BYTE能支持中文，ALPHA_NUMERIC扫描出来的都是数字)
            qrCodeEncoder.QRCodeScale = 8; //大小(值越大生成的二维码图片像素越高)
            qrCodeEncoder.QRCodeVersion = 0; //版本(注意：设置为0主要是防止编码的字符串太长时发生错误)
            qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M; //错误效验、错误更正(有4个等级)

            JObject result = new JObject();
            //编码
            Bitmap bmp = qrCodeEncoder.Encode(url);

            MemoryStream memory = new MemoryStream();
            bmp.Save(memory, ImageFormat.Jpeg);
            return memory.ToArray();
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}