jQuery以Post方式发送请求并获取返回的文件供下载！

try
{
string FileName = ".//doc//[大家网]Beginning.ASP.NET.2.0.E-Commerce.in.C#.2005.From.Novice.to.Professional[www.TopSage.com].pdf";
FileName = ".//doc//Shipping+Advice+Spec++V1.4.xls";
FullFileName = Server.MapPath(FileName);
//FileName--要下载的文件名
FileInfo DownloadFile = new FileInfo(FullFileName);
if (DownloadFile.Exists)
{
Response.Clear();
Response.ClearHeaders();
Response.Buffer = false;
Response.ContentType = "application/octet-stream";
Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(DownloadFile.FullName, System.Text.Encoding.ASCII));
Response.AppendHeader("Content-Length", DownloadFile.Length.ToString());
Response.WriteFile(DownloadFile.FullName);
Response.Flush();
Response.End();
}
else
{
//文件不存在
}
}
catch
{
//打开时异常了
}