在做上传的时候已经将文件名及路径存储好了,分别为resource_name和resource_filename.现在下载已经可以实现,英文的文件名也可以正确显示,但带中文的文件名显示为乱码,我上网找了不少资料,不过还是未能解决.下面是相关的代码,恳请高手指点...小弟感激不尽!
//定义"下载"按钮的HTML代码
<asp:LinkButton ID="LinkButton1" runat="server" CommandArgument='<%#Eval("id")%>' OnCommand="Download" Width="53px">下载</asp:LinkButton>
//点击按钮后触发的事件Download及它调用的方法ResponseFile代码:
protected void Download(object sender,CommandEventArgs e)
{
try
{
String resource_id = ((LinkButton)sender).CommandArgument.ToString();
SqlConnection weida = new SqlConnection(ConfigurationManager.AppSettings["dbconnectionString"]);
weida.Open();
string str = "SELECT * FROM Resource WHERE id = '" + resource_id + "'";
SqlCommand bind = new SqlCommand(str, weida);
SqlDataReader datareader = bind.ExecuteReader();
datareader.Read();
string name = datareader["resource_name"].ToString();
string fullname = datareader["resource_filename"].ToString();
weida.Close();
datareader.Close();
Page.Response.Clear();
string fullpath = Server.MapPath(fullname);
bool success = ResponseFile(Page.Request, Page.Response, name, fullpath, 1024000);
if (!success)
Response.Write("下载文件出错！");
Page.Response.End();
}
catch (Exception)
{
Response.Write("<script language='javascript'>alert('下载文件发生异常,请重新登录再尝试');</script>");
}
}
public bool ResponseFile(HttpRequest _Request, HttpResponse _Response, string _fileName, string _fullPath, long _speed)
{
try
{
FileStream myFile = new FileStream(_fullPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
BinaryReader br = new BinaryReader(myFile);
try
{
_Response.AddHeader("Accept-Ranges", "bytes");
_Response.Buffer = false;
long fileLength = myFile.Length;
long startBytes = 0;
int pack = 10240; //10K bytes
//int sleep = 200; //每秒5次 即5*10K bytes每秒
int sleep = (int)Math.Floor((double)(1000 * pack / _speed)) + 1;
if (_Request.Headers["Range"] != null)
{
_Response.StatusCode = 206;
string[] range = _Request.Headers["Range"].Split(new char[] { '=', '-' });
startBytes = Convert.ToInt64(range[1]);
}
_Response.AddHeader("Content-Length", (fileLength - startBytes).ToString());
if (startBytes != 0)
{
_Response.AddHeader("Content-Range", string.Format(" bytes {0}-{1}/{2}", startBytes, fileLength - 1, fileLength));
}
_Response.AddHeader("Connection", "Keep-Alive");
_Response.ContentType = "application/octet-stream;charset=gb2312";
_Response.AddHeader("Content-Disposition", "attachment;filename=" +_fileName); //HttpUtility.UrlEncode(System.Text.UTF8Encoding.UTF8.GetBytes(_filename))