public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "image/jpeg";
string code = context.Request["v"];
string isLogo = context.Request["is_logo"];
QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();
qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;
qrCodeEncoder.QRCodeScale = 4;
qrCodeEncoder.QRCodeVersion = 10;
qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;
String data = code;
System.Drawing.Bitmap image = qrCodeEncoder.Encode(data);
//image.Save(memStream, System.Drawing.Imaging.ImageFormat.Jpeg);
string filename = string.Format("{0}.jpg", Guid.NewGuid().ToString());
string relatePath = string.Format("/FileUpload/QCode/{0}", filename);
image.Save(context.Server.MapPath(relatePath));
if (string.IsNullOrEmpty(isLogo))
{
relatePath = bll.CompoundImageLogo(relatePath);
}
// System.IO.MemoryStream memStream = new System.IO.MemoryStream();
context.Response.ClearContent();
context.Response.ContentType = "image/Gif";
//context.Response.BinaryWrite(memStream.ToArray());
//根据图片文件的路径使用文件流打开，并保存为byte[]
FileStream fs = new FileStream(context.Server.MapPath(relatePath), FileMode.Open);//可以是其他重载方法
byte[] byData = new byte[fs.Length];
fs.Read(byData, 0, byData.Length);
fs.Close();
context.Response.BinaryWrite(byData);
}