SGGL_SHJ/SGGL/BLL/Common/CreateQRCodeService.cs

using QRCoder;
using System;
using System.IO;
using System.Text;
using ThoughtWorks.QRCode.Codec;

namespace BLL
{
    /// <summary>
    /// 上传附件相关
    /// </summary>
    public class CreateQRCodeService
    {
        /// <summary>
        /// 生成二维码方法一
        /// </summary>
        public static string CreateCode_Simple(string nr)
        {
            try
            {
                string imageUrl = string.Empty;
                if (!string.IsNullOrEmpty(nr))
                {
                    QRCodeEncoder qrCodeEncoder = new QRCodeEncoder
                    {
                        QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE,
                        QRCodeScale = nr.Length,
                        QRCodeVersion = 0,
                        QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M
                    };
                    System.Drawing.Image image = qrCodeEncoder.Encode(nr, Encoding.UTF8);
                    string filepath = Funs.RootPath + UploadFileService.QRCodeImageFilePath;
                    //如果文件夹不存在，则创建
                    if (!Directory.Exists(filepath))
                    {
                        Directory.CreateDirectory(filepath);
                    }
                    string filename = DateTime.Now.ToString("yyyymmddhhmmssfff").ToString() + ".jpg";
                    FileStream fs = new FileStream(filepath + filename, FileMode.OpenOrCreate, FileAccess.Write);
                    image.Save(fs, System.Drawing.Imaging.ImageFormat.Jpeg);
                    fs.Close();
                    image.Dispose();
                    imageUrl = UploadFileService.QRCodeImageFilePath + filename;
                }
                return imageUrl;
            }
            catch (Exception ex)
            {
                ErrLogInfo.WriteLog(ex, "二维码生成" + nr, "CreateQRCodeService.CreateCode_Simple");
                return null;
            }
        }
        /*
      public Bitmap GetGraphic(int pixelsPerModule, Color darkColor, Color lightColor, [Bitmap icon=null], [int iconSizePercent=15], [int iconBorderWidth=6], [bool drawQuietZones=true])
          int pixelsPerModule：生成二维码图片的像素大小； 
          Color darkColor：二维码图像暗色，一般设置为Color.Black。
          Color lightColor：二维码图像亮色， 一般设置为Color.White。
          Bitmap icon：二维码中间水印图标。
          int iconSizePercent：水印图标的大小比例。
          int iconBorderWidth：水印图标的边框。不能设为0，否则会显示“参数错误”，程序运行出错。
          bool drawQuietZones：静止区，即是否绘画二维码的空白边框区域，默认为true。
      */
        public static string CreateCode_Simple(string nr, string filename)
        {
            try
            {
                string imageUrl = string.Empty;
                if (!string.IsNullOrEmpty(nr))
                {
                    //QRCodeEncoder qrCodeEncoder = new QRCodeEncoder
                    //{
                    //    QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE,
                    //    QRCodeScale = nr.Length,
                    //    QRCodeVersion =0,
                    //    QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M
                    //};
                    //System.Drawing.Image image = qrCodeEncoder.Encode(nr, Encoding.UTF8);

                    QRCoder.QRCode qRCode = new QRCoder.QRCode();
                    QRCodeGenerator qrGenerator = new QRCodeGenerator();
                    QRCodeData qrCodeData = qrGenerator.CreateQrCode(nr, QRCodeGenerator.ECCLevel.Q);
                    QRCode qrcode = new QRCode(qrCodeData);

                    System.Drawing.Image image = qrcode.GetGraphic(100);
                    string filepath = Funs.RootPath + UploadFileService.QRCodeImageFilePath;
                    //如果文件夹不存在，则创建
                    if (!Directory.Exists(filepath))
                    {
                        Directory.CreateDirectory(filepath);
                    }
                    // string filename = DateTime.Now.ToString("yyyymmddhhmmssfff").ToString() + ".jpg";
                    filename = filename + ".jpg";
                    //if (File.Exists(filepath + filename))
                    //{
                    //    File.Delete(filepath + filename);
                    //}
                    FileStream fs = new FileStream(filepath + filename, FileMode.OpenOrCreate, FileAccess.Write);
                    image.Save(fs, System.Drawing.Imaging.ImageFormat.Jpeg);
                    fs.Close();
                    image.Dispose();
                    imageUrl = UploadFileService.QRCodeImageFilePath + filename;
                }
                return imageUrl;
            }
            catch (Exception ex)
            {
                ErrLogInfo.WriteLog(ex, "二维码生成" + nr, "CreateQRCodeService.CreateCode_Simple");
                return null;
            }
        }
        /// <summary>
        /// 
        /// </summary>
        /// <returns></returns>
        public static bool isHaveImage(string url)
        {
            string filepath = Funs.RootPath + url;
            return File.Exists(filepath);
        }
    }
}