如何:使用 FTP 下载文件
此示例演示如何从 FTP 服务器下载文件。
备注
本文专门针对面向 .NET Framework 的项目。 对于面向 .NET 6 及更高版本的项目,不再支持 FTP。
示例
using System;
using System.IO;
using System.Net;
namespace Examples.System.Net
{
public class WebRequestGetExample
{
public static void Main ()
{
// Get the object used to communicate with the server.
FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://www.contoso.com/test.htm");
request.Method = WebRequestMethods.Ftp.DownloadFile;
// This example assumes the FTP site uses anonymous logon.
request.Credentials = new NetworkCredential("anonymous","janeDoe@contoso.com");
FtpWebResponse response = (FtpWebResponse)request.GetResponse();
Stream responseStream = response.GetResponseStream();
StreamReader reader = new StreamReader(responseStream);
Console.WriteLine(reader.ReadToEnd());
Console.WriteLine($"Download Complete, status {response.StatusDescription}");
reader.Close();
response.Close();
}
}
}
Imports System.IO
Imports System.Net
Namespace Examples.System.Net
Public Module WebRequestGetExample
Public Sub Main()
' Get the object used to communicate with the server.
Dim request As FtpWebRequest = CType(WebRequest.Create("ftp://www.contoso.com/test.htm"), FtpWebRequest)
request.Method = WebRequestMethods.Ftp.DownloadFile
' This example assumes the FTP site uses anonymous logon.
request.Credentials = New NetworkCredential("anonymous", "janeDoe@contoso.com")
Dim response As FtpWebResponse = CType(request.GetResponse(), FtpWebResponse)
Dim responseStream As Stream = response.GetResponseStream()
Dim reader As StreamReader = New StreamReader(responseStream)
Console.WriteLine(reader.ReadToEnd())
Console.WriteLine($"Download Complete, status {response.StatusDescription}")
reader.Close()
response.Close()
End Sub
End Module
End Namespace
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