将文件上传到FTP目的地已损坏，一旦 [英] Uploading files to FTP are corrupted once in destination

问题描述

我创建一个简单的拖放文件和上传 - 自动到FTP windows应用程序

和我使用的 MSDN代码上传文件到FTP。

中的代码是相当平直前锋：

  //获取用于与服务器通信的对象。 
的FtpWebRequest请求=（的FtpWebRequest）WebRequest.Create（的String.Format（{0} {1}，FTP_PATH，filenameToUpload））; 
 request.Method = WebRequestMethods.Ftp.UploadFile; 
 
 //选项
 request.UseBinary = TRUE; 
 request.UsePassive = FALSE; 
 
 // FTP凭证
 request.Credentials =新的NetworkCredential（FTP_USR，FTP_PWD）; 
 
 //文件的内容复制到请求流。 
的StreamReader的SourceStream =新的StreamReader（fileToUpload.FullName）; 
字节[] = fileContents Encoding.UTF8.GetBytes（sourceStream.ReadToEnd（））; 
 sourceStream.Close（）; 
 request.ContentLength = fileContents.Length; 
 
流requestStream = request.GetRequestStream（）; 
 requestStream.Write（fileContents，0，fileContents.Length）; 
 requestStream.Close（）; 
 
 FtpWebResponse响应=（FtpWebResponse）request.GetResponse（）; 
 writeOutput（上传文件完成！）; 
 writeOutput（状态：+ response.StatusDescription）; 
 
 response.Close（）; 
  

和确实获取上传到FTP

问题是当我看到在浏览器上的文件，或者只需下载并尝试看到它在桌面上，我得到：

我已经用 request.UseBinary = FALSE; 和 request.UsePassive = FALSE; ，但它不缝做任何形式的任何好。

我已经找到退出是，原来的文件有122KB lenght并在FTP（和下载后），它有219KB。 ..

我在做什么错了？

顺便说一句，在 uploadFileToFTP（）方法在的BackgroundWorker 运行，但我真的不有什么差别的事情...

解决方案

您不应该使用一个StreamReader，但只有一个流中读取二进制文件。< 。/ p>

StreamReader的设计为只读文本文件

试试这个：

 私有静态无效了（字符串的资源文件，字符串的TargetFile）
 {
试
 {
串ftpServerIP = ConfigurationManager中.AppSettings [ftpIP]; 
串ftpUserID = ConfigurationManager.AppSettings [名为ftpuser]; 
串ftpPassword = ConfigurationManager.AppSettings [ftpPass]; 
 ////字符串ftpURI =; 
字符串文件名=FTP：//+ ftpServerIP +//+的TargetFile; 
的FtpWebRequest ftpReq =（的FtpWebRequest）WebRequest.Create（文件名）; 
 ftpReq.UseBinary = TRUE; 
 ftpReq.Method = WebRequestMethods.Ftp.UploadFile; 
 ftpReq.Credentials =新的NetworkCredential（ftpUserID，ftpPassword）; 
 
字节[] B = File.ReadAllBytes（的资源文件）; 
 
 ftpReq.Co​​ntentLength = b.length个; 
使用（流S = ftpReq.GetRequestStream（））
 {
 s.Write（B，0，b.length个）; 
} 
 
 FtpWebResponse ftpResp =（FtpWebResponse）ftpReq.GetResponse（）; 
 
如果（ftpResp！= NULL）
 {
 MessageBox.Show（ftpResp.StatusDescription）; 
} 
} 
赶上（异常前）
 {
 MessageBox.Show（ex.ToString（））; 
} 
} 
  

I'm creating a simple drag-file-and-upload-automatically-to-ftp windows application

and I'm using the MSDN code to upload the file to the FTP.

The code is pretty straight forward:

// 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();

and it does get uploaded to the FTP

Problem is when I see the file on a browser, or simply download and try to see it on desktop I get:

I already used request.UseBinary = false; and request.UsePassive = false; but it does not seam to do any kind of good whatsoever.

What I have found out was that, the original file has 122Kb lenght and in the FTP (and after downloading), it has 219Kb...

What am I doing wrong?

By the way, the uploadFileToFTP() method is running inside a BackgroundWorker, but I don't really thing that makes any difference...

解决方案

You shouldn't use a StreamReader but only a Stream to read binary files.

Streamreader is designed to read text files only.

Try with this :

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());
    }
}

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