/// <summary>
/// 返回上传成功后的文件名，如果上传失败则返回""
/// </summary>
/// <param name="fu">FileUpload控件ID</param>
/// <returns></returns>
protected string UpFile(FileUpload FileUpload1)
{
string fileFullName = "";
if (FileUpload1.HasFile)
{
//判断文件是否小于2Mb
if (FileUpload1.PostedFile.ContentLength < 1024 * 1024 * 2)
{
try
{
string filename = DateTime.Now.ToString("yyyyMMddhhmmssffff");
string path = DateTime.Now.ToString("yyyyMM");
if (!Directory.Exists(Server.MapPath("~/UpFile/" + path + "/")))
{
Directory.CreateDirectory(Server.MapPath("~/UpFile/" + path + "/"));
}
string fileExt = FileUpload1.FileName.Split('.')[1].ToString().ToLower();
//上传文件并指定上传目录的路径
FileUpload1.PostedFile.SaveAs(Server.MapPath("~/UpFile/" + path + "/") + filename + "_bak." + fileExt);
//将大图缩小，以免太大影响打开速度
ThumNail.MakeThumNail(Server.MapPath("~/UpFile/" + path + "/") + filename + "_bak." + fileExt, Server.MapPath("~/UpFile/" + path + "/") + filename + "." + fileExt, 600, 600, "HW2");
File.Delete(Server.MapPath("~/UpFile/" + path + "/") + filename + "_bak." + fileExt);
//生成缩略图
ThumNail.MakeThumNail(Server.MapPath("~/UpFile/" + path + "/") + filename + "." + fileExt, Server.MapPath("~/UpFile/" + path + "/") + filename + "_s." + fileExt, 300, 300, "HW2");
/*注意->这里为什么不是:FileUpLoad1.PostedFile.FileName
* 而是:FileUpLoad1.FileName?
* 前者是获得客户端完整限定(客户端完整路径)名称
* 后者FileUpLoad1.FileName只获得文件名.
*/
//当然上传语句也可以这样写(貌似废话):
//FileUpLoad1.SaveAs(@"D:\"+FileUpLoad1.FileName);
filename = filename + "." + fileExt;
fileFullName = "/UpFile/" + path + "/" + filename;
}
catch (Exception ex)
{
//lblMessage.Text = "出现异常,上传图片失败!" + ex.Message;
//lblMessage.Text += ex.Message;
}
}
else
{
//lblMessage.Text = "上传文件不能大于2MB!";
}
}
return(fileFullName);
}
