需要C＃代码才能使用代理从FTP服务器下载文件 [英] need C# code for downloading files from FTP server using proxy

问题描述

我正在使用beow C＃代码从FTP下载文件。生成的文件包含错误文本。请让我知道如何解决错误。

 错误消息 ：   < /   H1  >   
  <   PRE  >   200  类型 设置     我 。  
   200   PORT命令成功 。  
   550     /   ftp  。  txt  ： 没有这样的 文件   或 目录 。  
  < /   PRE  >   
  < /   BODY  >   
  < /   HTML  >  

< pre class ="prettyprint prettyprinted">

string file < span class ="pun"> = " ftp.txt" ;
string fileName = @ " D：\ Test \" +文件;

FtpWebRequest downloadRequest =（FtpWebRequest）FtpWebRequest.Create（ ftp：// ServerName +" / " + file）;
downloadRequest.Method = WebRequestMethods.Ftp.DownloadFile;
//downloadRequest.Credentials = new NetworkCredential（" UserName "，" < span class ="typ">密码 "）;

WebProxy myProxy = new WebProxy（）;
Uri newUri = new Uri（ http：// ProxyName：ProxyPortNo ）;
//将newUri对象与'myProxy'对象相关联，以便可以设置新的myProxy设置。
myProxy.Address = newUri;
//创建NetworkCredential对象并将其与请求对象的
// Proxy属性相关联。
myProxy.Credentials = new NetworkCredential（" USerName "，" 密码 "，" 域 " ）;
downloadRequest.Proxy = myProxy;


FtpWebResponse response =（FtpWebResponse）downloadRequest.GetResponse（）;
流responseStream = response.GetResponseStream（）;
StreamReader reader = new StreamReader（responseStream）;

FileInfo downloadFile = new FileInfo（fileName）;
FileStream outputStream = new FileStream（fileName，FileMode.Append）;

流ftpStream = response.GetResponseStream（）;
long cl = response.ContentLength;
int bufferSize = 4096;
int readCount;
byte [] buffer = new byte [bufferSize];
readCount = ftpStream.Read（buffer，0，bufferSize）;
MessageBox.Show（" 已连接 ： 正在下载 档案 " ）;
while（readCount> 0）
{
outputStream.Write（buffer，0，readCount）;
readCount = ftpStream.Read（buffer，0，bufferSize）;
//Console.WriteLine（readCount.ToString（））;
}

ftpStream.Close（）;
outputStream.Close（）;
response.Close（）;
MessageBox.Show（" 正在下载 完整 "）;

谢谢，

Saikat

解决方案

我正在使用beow C＃代码从FTP下载文件。生成的文件包含错误文本。

错误消息：< / H1> 
< PRE> 200类型设置为I. 
 200 PORT命令成功。 
 550 /ftp.txt：没有这样的文件或目录。 
< / PRE> 
< / BODY> 
< / HTML> 
 

 string file =" ftp.txt" ;; 
 string fileName = @" D：\Test \" +文件; 
 
 FtpWebRequest downloadRequest =（FtpWebRequest）FtpWebRequest.Create（ ftp：// ServerName  +" /" + file）; 
 downloadRequest.Method = WebRequestMethods.Ftp.DownloadFile; 
 //downloadRequest.Credentials = new NetworkCredential（" UserName"，" Password"）; 
 
 WebProxy myProxy = new WebProxy（）; 
 Uri newUri = new Uri（ http：// ProxyName：ProxyPortNo ）; 
 //将newUri对象与'myProxy'对象相关联，以便可以设置新的myProxy设置。 
 myProxy.Address = newUri; 
 //创建NetworkCredential对象并将其与请求对象的
 // Proxy属性相关联。 
 myProxy.Credentials = new NetworkCredential（" USerName"，" Password"，" Domain"）; 
 downloadRequest.Proxy = myProxy; 
 
 
 FtpWebResponse response =（FtpWebResponse）downloadRequest.GetResponse（）; 
流responseStream = response.GetResponseStream（）; 
 StreamReader reader = new StreamReader（responseStream）; 
 
 FileInfo downloadFile = new FileInfo（fileName）; 
 FileStream outputStream = new FileStream（fileName，FileMode.Append）; 
 
流ftpStream = response.GetResponseStream（）; 
 long cl = response.ContentLength; 
 int bufferSize = 4096; 
 int readCount; 
 byte [] buffer = new byte [bufferSize]; 
 readCount = ftpStream.Read（buffer，0，bufferSize）; 
 MessageBox.Show（" Connected：Downloading File"）; 
 while（readCount> 0）
 {
 outputStream.Write（buffer，0，readCount）; 
 readCount = ftpStream.Read（buffer，0，bufferSize）; 
 //Console.WriteLine（readCount.ToString（））; 
} 
 
 ftpStream.Close（）; 
 outputStream.Close（）; 
 response.Close（）; 
 MessageBox.Show（" Downloading Complete"）; 

谢谢，

Saikat

Hi,

I am using the beow C# code for downloading the files from FTP. The file gets generated with error text which says. Please let me know how to resolve the error.

error message : </H1>
<PRE>200 Type set to I.
200 PORT Command successful.
550 /ftp.txt: No such file or directory.
 </PRE>
</BODY>
</HTML>

        string file = "ftp.txt";
        string fileName = @"D:\Test\" + file;

        FtpWebRequest downloadRequest = (FtpWebRequest)FtpWebRequest.Create(ftp://ServerName + "/" + file);
        downloadRequest.Method = WebRequestMethods.Ftp.DownloadFile;
        //downloadRequest.Credentials = new NetworkCredential("UserName", "Password");

        WebProxy myProxy = new WebProxy();
        Uri newUri = new Uri(http://ProxyName:ProxyPortNo);
        // Associate the newUri object to 'myProxy' object so that new myProxy settings can be set.
        myProxy.Address = newUri;
        // Create a NetworkCredential object and associate it with the 
        // Proxy property of request object.
        myProxy.Credentials = new NetworkCredential("USerName", "Password","Domain");
        downloadRequest.Proxy = myProxy;

  
        FtpWebResponse response = (FtpWebResponse)downloadRequest.GetResponse();
        Stream responseStream = response.GetResponseStream();
        StreamReader reader = new StreamReader(responseStream);

        FileInfo downloadFile = new FileInfo(fileName);
        FileStream outputStream = new FileStream(fileName, FileMode.Append);

        Stream ftpStream = response.GetResponseStream();
        long cl = response.ContentLength;
        int bufferSize = 4096;
        int readCount;
        byte[] buffer = new byte[bufferSize];
        readCount = ftpStream.Read(buffer, 0, bufferSize);
        MessageBox.Show("Connected: Downloading File");
        while (readCount > 0)
        {
            outputStream.Write(buffer, 0, readCount);
            readCount = ftpStream.Read(buffer, 0, bufferSize);
            //Console.WriteLine(readCount.ToString());
        }

        ftpStream.Close();
        outputStream.Close();
        response.Close();
        MessageBox.Show("Downloading Complete");
Thanks,
Saikat

解决方案

Hi,

I am using the beow C# code for downloading the files from FTP. The file gets generated with error text which says.

error message : </H1>
<PRE>200 Type set to I.
200 PORT Command successful.
550 /ftp.txt: No such file or directory.
 </PRE>
</BODY>
</HTML>

        string file = "ftp.txt";
        string fileName = @"D:\Test\" + file;

        FtpWebRequest downloadRequest = (FtpWebRequest)FtpWebRequest.Create(ftp://ServerName + "/" + file);
        downloadRequest.Method = WebRequestMethods.Ftp.DownloadFile;
        //downloadRequest.Credentials = new NetworkCredential("UserName", "Password");

        WebProxy myProxy = new WebProxy();
        Uri newUri = new Uri(http://ProxyName:ProxyPortNo);
        // Associate the newUri object to 'myProxy' object so that new myProxy settings can be set.
        myProxy.Address = newUri;
        // Create a NetworkCredential object and associate it with the 
        // Proxy property of request object.
        myProxy.Credentials = new NetworkCredential("USerName", "Password","Domain");
        downloadRequest.Proxy = myProxy;

  
        FtpWebResponse response = (FtpWebResponse)downloadRequest.GetResponse();
        Stream responseStream = response.GetResponseStream();
        StreamReader reader = new StreamReader(responseStream);

        FileInfo downloadFile = new FileInfo(fileName);
        FileStream outputStream = new FileStream(fileName, FileMode.Append);

        Stream ftpStream = response.GetResponseStream();
        long cl = response.ContentLength;
        int bufferSize = 4096;
        int readCount;
        byte[] buffer = new byte[bufferSize];
        readCount = ftpStream.Read(buffer, 0, bufferSize);
        MessageBox.Show("Connected: Downloading File");
        while (readCount > 0)
        {
            outputStream.Write(buffer, 0, readCount);
            readCount = ftpStream.Read(buffer, 0, bufferSize);
            //Console.WriteLine(readCount.ToString());
        }

        ftpStream.Close();
        outputStream.Close();
        response.Close();
        MessageBox.Show("Downloading Complete");

Thanks,
Saikat

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