public bool upload(HttpContext context, string type, out string filenName)
{
filenName = "";
var f = context.Request.Files["img"];
if (context.Request.Files["img"] == null)
{
return(false);
}
if (context.Request.Files["img"].ContentLength <= 0)
{
return(false);
}
try
{
string s = ".jpg";
string filepath = context.Server.MapPath("/upload");
string dateDir = DateTime.Now.ToString("yyyyMM");
string name = Util.GetUniqueIndentifier(20);
if (!Directory.Exists(filepath))
{
Directory.CreateDirectory(filepath);
}
filepath += "/" + type;
if (!Directory.Exists(filepath))
{
Directory.CreateDirectory(filepath);
}
filepath += "/" + dateDir;
if (!Directory.Exists(filepath))
{
Directory.CreateDirectory(filepath);
}
filenName = string.Format("/upload/{0}/{1}/{2}{3}", type, dateDir, name, s);
string path = context.Server.MapPath(filenName);
context.Request.Files["img"].SaveAs(path);
FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read);
BinaryReader reader = new BinaryReader(fs);
string fileClass;
byte buffer;
byte[] b = new byte[2];
buffer = reader.ReadByte();
b[0] = buffer;
fileClass = buffer.ToString();
buffer = reader.ReadByte();
b[1] = buffer;
fileClass += buffer.ToString();
reader.Close();
fs.Close();
if (fileClass == "255216" || fileClass == "7173" || fileClass == "6677" || fileClass == "13780")
{
//255216是jpg;7173是gif;6677是BMP,13780是PNG;7790是exe,8297是rar
//Response.Write("图片可用");
//保存到数据库中
//context.Response.Write(folder + "/" + saveName);
return(true);
}
else
{
context.Response.Write("上传失败");
File.Delete(path); //删除文件
LogHelper.SaveLog("上传的图片无效", "upload");
return(false);
}
//if (new ImageThumbnail(path).ReducedImage(0.9, path))
//{
// return true;
//}
//else if (File.Exists(path))
//{
// File.Delete(path);
// LogHelper.SaveLog("上传的图片无效", "upload");
// return false;
//}
}
catch (Exception ex)
{
LogHelper.SaveLog(ex.ToString(), "upload");
}
return(false);
}