public FileResult Index(string data)
{
var steam = new System.IO.MemoryStream();
Image image = QrCode.Generate(data);
image.Save(steam, System.Drawing.Imaging.ImageFormat.Jpeg);
image.Dispose();
return(File(steam.ToArray(), "image/jpeg"));
}
/// <summary>
/// 生成二维码
/// </summary>
/// <param name="data">内容</param>
/// <param name="qrCodepath">二维码地址</param>
/// <param name="tempPath">二维码地址无LOGO</param>
/// <param name="logo">LOGO图</param>
public static string GenerateQRCode(string data, string qrCodepath, string tempPath, Image logo = null)
{
try
{
Image image = null;
var tempFilePath = HttpContext.Current.Request.MapPath(tempPath);
var fileInfo = new FileInfo(tempFilePath);
if (!fileInfo.Directory.Exists)
{
fileInfo.Directory.Create();
}
if (!string.IsNullOrWhiteSpace(tempPath) && fileInfo.Exists)
{
FileStream fs = new FileStream(HttpContext.Current.Request.MapPath(tempPath), FileMode.Open, FileAccess.Read);
image = Image.FromStream(fs);
fs.Close();
}
else
{
image = QrCode.Generate(data);
image.Save(HttpContext.Current.Request.MapPath(tempPath));
}
if (logo != null)
{
image = QrCode.SetLogo(image, logo);
}
//保存
string returnpath = HttpContext.Current.Request.MapPath(qrCodepath);
image.Save(returnpath);
image.Dispose();
return(returnpath);
}
catch (Exception ex)
{
throw ex;
}
}