在本地主机上运行的ftp文件下载但在服务器上无法运行

Question

string HostName = System.Configuration.ConfigurationSettings.AppSettings["HostName"]; 
string strUser = System.Configuration.ConfigurationSettings.AppSettings["BasicAuthenticationUser"]; 
string strPWD = System.Configuration.ConfigurationSettings.AppSettings["BasicAuthenticationPWD"]; 

strFile = "9788191073072.zip"; 

FtpWebRequest request = (FtpWebRequest)WebRequest.Create(HostName + strFile); 
request.Method = WebRequestMethods.Ftp.DownloadFile; 
request.Credentials = new NetworkCredential(strUser, strPWD); 
request.UsePassive = true; 
request.UseBinary = true; 
request.KeepAlive = false; 

FtpWebResponse response = (FtpWebResponse)request.GetResponse(); 
Stream responseStream = response.GetResponseStream(); 

Response.AddHeader("content-disposition", "attachment;filename=" + strFile); 

byte[] buffer = new byte[2 * 1024]; 
int read; 

while ((read = responseStream.Read(buffer, 0, buffer.Length)) > 0) { Response.OutputStream.Write(buffer, 0, read); } 

responseStream.Close(); 
response.Close(); 

Answer 1

没有任何真正的细节可以继续，这可能必须在生产服务器上设置MIME类型。

这也可能是由于您和服务器之间可能存在的透明代理筛选策略。

再一次，你应该通过Fiddler做一个细粒度的跟踪，看看服务器真正返回什么，以及请求是否成功完成。

假设这是一个IIS服务器，服务器事件日志中的外观还可以告诉您应用程序池是否崩溃并重新启动，看起来好像没有错误，但响应不正确。

Answer 2

string HostName = System.Configuration.ConfigurationSettings.AppSettings["HostName"]; 
string strUser = System.Configuration.ConfigurationSettings.AppSettings["BasicAuthenticationUser"]; 
string strPWD = System.Configuration.ConfigurationSettings.AppSettings["BasicAuthenticationPWD"]; 

FtpWebRequest request = (FtpWebRequest)WebRequest.Create(HostName + strFile); 
request.Method = WebRequestMethods.Ftp.DownloadFile; 
request.Credentials = new NetworkCredential(strUser, strPWD); 
request.UsePassive = true; 
request.UseBinary = true; 
request.KeepAlive = false; 

FtpWebResponse response = (FtpWebResponse)request.GetResponse(); 
Stream responseStream = response.GetResponseStream(); 

Response.ContentType = "application/octet-stream"; 
Response.AddHeader("content-disposition", "attachment;filename=" + _AudiobookName + ".zip"); 
int read; 
byte[] buffer = new byte[2 * 1024]; 
while ((read = responseStream.Read(buffer, 0, buffer.Length)) > 0) 
{ 
    Response.OutputStream.Write(buffer, 0, read); 
    Response.Flush(); 
} 
responseStream.Close(); 
response.Close(); 
Response.Flush(); 
Response.End();