将文件上载到FTP在目标中已损坏一次

Question

我正在创建一个简单的drag-file-and-upload-automatic-to-ftp windows应用程序

我正在使用MSDN代码将文件上传到FTP.

代码很简单:

// Get the object used to communicate with the server.
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(String.Format("{0}{1}", FTP_PATH, filenameToUpload));
request.Method = WebRequestMethods.Ftp.UploadFile;

// Options
request.UseBinary = true;
request.UsePassive = false;

// FTP Credentials
request.Credentials = new NetworkCredential(FTP_USR, FTP_PWD);

// Copy the contents of the file to the request stream.
StreamReader sourceStream = new StreamReader(fileToUpload.FullName);
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();
writeOutput("Upload File Complete!");
writeOutput("Status: " + response.StatusDescription);

response.Close();

并且它确实获得上传到FTP

问题是当我在浏览器上看到该文件,或者只是下载并尝试在桌面上看到它时,我得到:

我已经习惯了request.UseBinary = false;,request.UsePassive = false;但它并没有接缝做任何好事.

我发现的是,原始文件有122Kb长度,在FTP(和下载后),它有219Kb ...

我究竟做错了什么？

顺便说一下,这个uploadFileToFTP()方法在一个内部运行BackgroundWorker,但我真的没有任何区别......

Answer 1

您不应该使用StreamReader而只能使用Stream来读取二进制文件.

Streamreader仅用于读取文本文件.

试试这个:

private static void up(string sourceFile, string targetFile)
{            
    try
    {
        string ftpServerIP = ConfigurationManager.AppSettings["ftpIP"];
        string ftpUserID = ConfigurationManager.AppSettings["ftpUser"];
        string ftpPassword = ConfigurationManager.AppSettings["ftpPass"];
        ////string ftpURI = "";
        string filename = "ftp://" + ftpServerIP + "//" + targetFile; 
        FtpWebRequest ftpReq = (FtpWebRequest)WebRequest.Create(filename);
        ftpReq.UseBinary = true;
        ftpReq.Method = WebRequestMethods.Ftp.UploadFile;
        ftpReq.Credentials = new NetworkCredential(ftpUserID, ftpPassword);

        byte[] b = File.ReadAllBytes(sourceFile);

        ftpReq.ContentLength = b.Length;
        using (Stream s = ftpReq.GetRequestStream())
        {
            s.Write(b, 0, b.Length);
        }

        FtpWebResponse ftpResp = (FtpWebResponse)ftpReq.GetResponse();

        if (ftpResp != null)
        {
            MessageBox.Show(ftpResp.StatusDescription);
        }
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.ToString());
    }
}