注意获取文件夹“qrcode_data”
QRCODE_DATA_PATH = Environment.CurrentDirectory + @"qrcode_data";
QRCODE_DATA_PATH = AppDomain.CurrentDomain.BaseDirectory + "qrcode_data";
http://files.cnblogs.com/files/xbblogs/%E4%BA%8C%E7%BB%B4%E7%A0%81.zip
C:WindowsSystem32inetsrv 记住这个路径，文件夹“qrcode_data”放在这