問題描述

我想循環訪問 FTP 文件夾以檢查文件是否到達

I want to loop on a FTP folder for check if a file has arrived

我愿意:

FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://localhost:8080");
request.Credentials = new NetworkCredential("anonymous", "");
request.Method = WebRequestMethods.Ftp.ListDirectoryDetails;

while(true)
{
    using (FtpWebResponse response = (FtpWebResponse)request.GetResponse())
    using (Stream responseStream = response.GetResponseStream())
    using (StreamReader reader = new StreamReader(responseStream))
    {
        Console.WriteLine(reader.ReadToEnd());

        reader.Close();
        response.Close();
    }
}

但是在第二次迭代中我得到了一個異常:

But at the second iteration I get an exception:

無法讀取流

推薦答案

對不起，我錯過了，您只發出一個請求并嘗試多次獲得響應.試試下面的代碼:

Sorry, I missed it, you're only issuing one request and trying to get a response multiple times. Try the code below:

while(true)
{
    FtpWebRequest request =     (FtpWebRequest)WebRequest.Create("ftp://localhost:8080");
    request.Credentials = new NetworkCredential("anonymous", "");
    request.Method = WebRequestMethods.Ftp.ListDirectoryDetails;

    using (FtpWebResponse response = (FtpWebResponse)request.GetResponse())
    using (Stream responseStream = response.GetResponseStream())
    using (StreamReader reader = new StreamReader(responseStream))
    {
        Console.WriteLine(reader.ReadToEnd());

        reader.Close();
        response.Close();
    }
}

您應該在每個循環結束時添加某種暫停.你不想轟炸服務器.

You should add a pause of some sort at the end of each loop though. You don't want to bombard the server.

這篇關于C# - FtpWebRequest - 通過同一連接/登錄的多個請求的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！