WebRequestMethods.Ftp 中上传文件和使用唯一名称上传文件的区别

Question

这里有两个问题：

1)WebRequestMethods.Ftp.uploadfile 和 WebRequestMethods.Ftp.uploadfilewithuniquename 的区别？

2) 当我使用下面的代码为一个已经存在的文件上传文件时，它会覆盖 file.And 假设它总是会覆盖是安全的吗？

         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.UploadFile;
 // what if i use  request.Method = WebRequestMethods.Ftp.UploadFilewithuniquename;



        // This example assumes the FTP site uses anonymous logon.
        request.Credentials = new NetworkCredential ("anonymous","janeDoe@contoso.com");

        // Copy the contents of the file to the request stream.
        StreamReader sourceStream = new StreamReader("testfile.txt");
        byte [] fileContents = Encoding.UTF8.GetBytes(sourceStream.ReadToEnd());
        sourceStream.Close();
        request.ContentLength = fileContents.Length;

        Stream requestStream = request.GetRequestStream();
        requestStream.Write(fileContents, 0, fileContents.Length);
        requestStream.Close();

        FtpWebResponse response = (FtpWebResponse)request.GetResponse();

        Console.WriteLine("Upload File Complete, status {0}", response.StatusDescription);

        response.Close();
        }

Answer 1

这些方法参考了FTP命令STOR and STOU。

如果登录用户有权限，那么STOR（WebRequestMethods.Ftp.UploadFile）将创建一个新文件或覆盖现有文件。

WebRequestMethods.Ftp 中上传文件和使用唯一名称上传文件的区别

difference between uploadfile and uploadfilewithuniquename in WebRequestMethods.Ftp

c#

ftp

ftpwebrequest

ftpwebresponse