Asp.Net 2.0 防盗下载文件

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2008年5月25日編程·程序設計 800 views

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C#代码

public void downLoad(string path)
{
try
{
string filePath = path;
int temp = filePath.LastIndexOf("/") + 1;
string fileName = filePath.Substring(temp, filePath.Length - temp);
//FileStream fileStream = new FileStream(Server.MapPath(filePath), FileMode.Open, FileAccess.Read, FileShare.Read);
FileStream fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read);
long fileSize = fileStream.Length;
Context.Response.ContentType = "application/octet-stream";
Context.Response.AddHeader("Content-Disposition", "attachment; filename="" + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8) + """);
Context.Response.AddHeader("Content-Length", fileSize.ToString());
byte[] fileBuffer = new byte[fileSize];
fileStream.Read(fileBuffer, 0, (int)fileSize);
fileStream.Close();
Context.Response.BinaryWrite(fileBuffer);
Context.Response.End();
}
catch
{
Response.Write("<script>alert(‘查无此资料或已被删除’);</script>");
}
}