/// <summary>
/// 将一个二进制字符串写入HTTP输出流
/// </summary>
/// <param name="file">文件</param>
public static void BinaryWrite(string file)
{
string f = file.Substring(file.IndexOf("/"));
string path = HttpContext.Current.Server.MapPath(RequestHelper.GetBaseURI() + file);
if (File.Exists(path))
{
try
{
string sName = file.Substring(file.LastIndexOf('/') + 1).Replace(" ", "");
FileStream fs = new FileStream(path, FileMode.Open);
long size = fs.Length;
byte[] buffer = new byte[size];
fs.Read(buffer, 0, (int)size);
fs.Close();
HttpContext.Current.Response.ContentType = "application/octet-stream";
if (HttpContext.Current.Request.UserAgent.Contains("MSIE") || HttpContext.Current.Request.UserAgent.Contains("msie"))
{
sName = HttpContext.Current.Server.UrlEncode(sName);
}
HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment;filename=" + sName);
HttpContext.Current.Response.BinaryWrite(buffer);
HttpContext.Current.Response.Flush();
//HttpContext.Current.Response.Close();
}
catch
{
PageScriptHelper.ResponseScript("alert(\"下载时遇到错误！\");");
}
finally
{
HttpContext.Current.ApplicationInstance.CompleteRequest();
}
}
else
{
PageScriptHelper.ResponseScript("alert(\"无法提供下载资源！\");");
}
}
/// <summary>
/// 将指定的文件直接写入HTTP响应输出流
/// </summary>
/// <param name="file">文件</param>
public static void WriteFile(string file)
{
string f = file.Substring(file.IndexOf("/"));
string path = HttpContext.Current.Server.MapPath(RequestHelper.GetBaseURI() + file);
if (File.Exists(path))
{
try
{
string sName = file.Substring(file.LastIndexOf('/') + 1).Replace(" ", "");
HttpContext.Current.Response.ClearContent();
HttpContext.Current.Response.ClearHeaders();
HttpContext.Current.Response.Charset = "GB2312";
HttpContext.Current.Response.ContentEncoding = Encoding.UTF8;//注意编码
HttpContext.Current.Response.ContentType = "application/octet-stream";
if (HttpContext.Current.Request.UserAgent.Contains("MSIE") || HttpContext.Current.Request.UserAgent.Contains("msie"))
{
sName = HttpContext.Current.Server.UrlEncode(sName);
}
HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment;filename=" + sName);
HttpContext.Current.Response.WriteFile(path);
HttpContext.Current.Response.Flush();
//HttpContext.Current.Response.Close();
}
catch
{
PageScriptHelper.ResponseScript("alert(\"下载时遇到错误！\");");
}
finally
{
HttpContext.Current.ApplicationInstance.CompleteRequest();
}
}
else
{
PageScriptHelper.ResponseScript("alert(\"无法提供下载资源！\");");
}
}