求C# FTP下载文件夹的代码

2012-03-16 11:26:12 403 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

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C#实现FTP上传下载 Wqi 阅读详情

各位高手：

我想要实现FTP下载一个目录下所有内容（包括文件以及子目录等等）的功能。
请高手给我一个可以执行的完整代码。

注：不要给我粘贴各种链接，我也查过，但是很多都不能用，所以请大侠们试验一下，把好用的代码提供一下，我将万分感谢！

...全文

【C#】【FTP】从FTP下载图片 public void Download(string ftpPath, string filePath, string fileName) { filePath = "D:\\TestFTP\\"; fileName = "test.jpg"; ftpPath = "ftp://192.168.1.5/... 阅读详情

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足球中国 2012-03-19

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啥是文件夹。文件夹不是下的。老大。你在c++老牛了。这个东西你应该知道。

EnForGrass 2012-03-16

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[Quote=引用 6 楼 oophaisky 的回复:]

to Chinajiyong:

代码中好像没有下载文件夹的函数啊？！
[/Quote]
参考
http://blog.csdn.net/ou8811/article/details/5295780

OOPhaisky 2012-03-16

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to Chinajiyong:

代码中好像没有下载文件夹的函数啊？！

OOPhaisky 2012-03-16

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to Chinajiyong:

代码中好像没有下载文件夹的函数啊？！

OOPhaisky 2012-03-16

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to zanfeng:

请问，你提供的这个好像是下载单个文件的吧？我需要的是下载文件夹的代码。

EnForGrass 2012-03-16

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  //都调用这个

        private string[] GetFileList(string path, string WRMethods)//上面的代码示例了如何从ftp服务器上获得文件列表

        {

            string[] downloadFiles;

            StringBuilder result = new StringBuilder();

            try

            {

                Connect(path);

                reqFTP.Method = WRMethods;

                WebResponse response = reqFTP.GetResponse();

                StreamReader reader = new StreamReader(response.GetResponseStream(), System.Text.Encoding.UTF8);//中文文件名

                string line = reader.ReadLine();

                while (line != null)

                {

                    result.Append(line);

                    result.Append("\n");

                    line = reader.ReadLine();

                }

                // to remove the trailing '\n'

                result.Remove(result.ToString().LastIndexOf('\n'), 1);

                reader.Close();

                response.Close();

                return result.ToString().Split('\n');

            }

            catch (Exception ex)

            {

                System.Windows.Forms.MessageBox.Show(ex.Message);

                downloadFiles = null;

                return downloadFiles;

            }

        }

        public string[] GetFileList(string path)//上面的代码示例了如何从ftp服务器上获得文件列表

        {

            return GetFileList("ftp://" + ftpServerIP + path, WebRequestMethods.Ftp.ListDirectory);

        }

        public string[] GetFileList()//上面的代码示例了如何从ftp服务器上获得文件列表

        {

            return GetFileList("ftp://" + ftpServerIP + "/", WebRequestMethods.Ftp.ListDirectory);

        }



        public string Upload(string filedir, string filename) //上面的代码实现了从ftp服务器上载文件的功能

        {

            FileInfo fileInf = new FileInfo(filename);

            string uri = "ftp://" + ftpServerIP + filedir + fileInf.Name;



            Connect(uri);//连接         

            // 默认为true，连接不会被关闭

            // 在一个命令之后被执行

            reqFTP.KeepAlive = false;

            // 指定执行什么命令

            reqFTP.Method = WebRequestMethods.Ftp.UploadFile;

            // 上传文件时通知服务器文件的大小

            reqFTP.ContentLength = fileInf.Length;

            // 缓冲大小设置为kb

            int buffLength = 2048 * 5;

            byte[] buff = new byte[buffLength];

            int contentLen;

            // 打开一个文件流(System.IO.FileStream) 去读上传的文件

            FileStream fs = fileInf.OpenRead();

            try

            {

                // 把上传的文件写入流

                Stream strm = reqFTP.GetRequestStream();

                // 每次读文件流的kb

                contentLen = fs.Read(buff, 0, buffLength);

                // 流内容没有结束

                while (contentLen != 0)

                {

                    // 把内容从file stream 写入upload stream

                    strm.Write(buff, 0, contentLen);

                    contentLen = fs.Read(buff, 0, buffLength);

                }

                // 关闭两个流

                strm.Close();

                fs.Close();

                return "";

            }

            catch (Exception ex)

            {

                return "Upload Error" + ex.Message;

            }

        }

        /// <summary>

        /// 下载文件

        /// </summary>

        /// <param name="filedir">文件夹地址：必须是服务器根级相对地址，比如"/ftpFiles/images"</param>

        /// <param name="filePath">下载文件新路径，但不包含文件名，如：D:\Photo</param>

        /// <param name="fileName">ftp文件绝对路径,如:ftp://127.0.0.1/Photo/1.bmp</param>

        /// <returns></returns>

        public string Download(string filedir, string filePath, string fileName)////上面的代码实现了从ftp服务器下载文件的功能

        {

            try

            {

                String onlyFileName = Path.GetFileName(fileName);

                string newFileName = filePath + "\\" + onlyFileName;

                if (File.Exists(newFileName))

                {

                    return "本地文件" + newFileName + "已存在,无法下载";

                }

                string url = "ftp://" + ftpServerIP + filedir + onlyFileName;

                Connect(url);//连接 

                reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);

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

                Stream ftpStream = response.GetResponseStream();

                long cl = response.ContentLength;

                int bufferSize = 2048 * 5;

                int readCount;

                byte[] buffer = new byte[bufferSize];



                readCount = ftpStream.Read(buffer, 0, bufferSize);

                FileStream outputStream = new FileStream(newFileName, FileMode.Create);

                while (readCount > 0)

                {

                    outputStream.Write(buffer, 0, readCount);

                    readCount = ftpStream.Read(buffer, 0, bufferSize);

                }

                ftpStream.Close();

                outputStream.Close();

                response.Close();



                return "";

            }

            catch (Exception ex)

            {

                return "因" + ex.Message + ",无法下载";

            }

        }

        //删除文件

        public void DeleteFileName(string filedir, string fileName)

        {

            try

            {

                string fName = Path.GetFileName(fileName);

                string uri = "ftp://" + ftpServerIP + filedir + fName;

                Connect(uri);//连接         

                // 默认为true，连接不会被关闭

                // 在一个命令之后被执行

                reqFTP.KeepAlive = false;

                // 指定执行什么命令

                reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;

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

                response.Close();

            }

            catch (Exception ex)

            {

                MessageBox.Show(ex.Message, "删除错误");

            }

        }

        //创建目录

        public string MakeDir(string dirName)

        {

            try

            {

                string uri = "ftp://" + ftpServerIP + "/" + dirName;

                Connect(uri);//连接      

                reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;

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

                response.Close();

                return "";

            }

            catch (WebException ex)

            {

                return "[Make Dir]" + ex.Message;

            }

        }

        //删除目录

        public void delDir(string dirName)

        {

            try

            {

                string uri = "ftp://" + ftpServerIP + "/" + dirName;

                Connect(uri);//连接      

                reqFTP.Method = WebRequestMethods.Ftp.RemoveDirectory;

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

                response.Close();

            }

            catch (Exception ex)

            {

                MessageBox.Show(ex.Message);

            }

        }

        //获得文件大小

        public long GetFileSize(string filename)

        {

            long fileSize = 0;

            try

            {

                FileInfo fileInf = new FileInfo(filename);

                string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;

                Connect(uri);//连接      

                reqFTP.Method = WebRequestMethods.Ftp.GetFileSize;

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

                fileSize = response.ContentLength;

                response.Close();

            }

            catch (Exception ex)

            {

                MessageBox.Show(ex.Message);

            }

            return fileSize;

        }

        //文件改名

        public void Rename(string currentFilename, string newFilename)

        {

            try

            {

                FileInfo fileInf = new FileInfo(currentFilename);

                string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;

                Connect(uri);//连接

                reqFTP.Method = WebRequestMethods.Ftp.Rename;

                reqFTP.RenameTo = newFilename;

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

                //Stream ftpStream = response.GetResponseStream();

                //ftpStream.Close();

                response.Close();

            }

            catch (Exception ex)

            {

                MessageBox.Show(ex.Message);

            }

        }

        //获得文件明晰

        public string[] GetFilesDetailList()

        {

            return GetFileList("ftp://" + ftpServerIP + "/", WebRequestMethods.Ftp.ListDirectoryDetails);

        }

        //获得文件明晰

        public string[] GetFilesDetailList(string path)

        {

            return GetFileList("ftp://" + ftpServerIP + "/" + path, WebRequestMethods.Ftp.ListDirectoryDetails);

        }

    }

EnForGrass 2012-03-16

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完整一点



public class FtpFile

    {

        string ftpServerIP;



        public string FtpServerIP

        {

            get { return ftpServerIP; }

            set { ftpServerIP = value; }

        }

        string ftpUserID;



        public string FtpUserID

        {

            get { return ftpUserID; }

            set { ftpUserID = value; }

        }

        string ftpPassword;



        public string FtpPassword

        {

            get { return ftpPassword; }

            set { ftpPassword = value; }

        }

        FtpWebRequest reqFTP;

        public static string FtpServer = System.Configuration.ConfigurationSettings.AppSettings["FtpServer"];

        public static string FtpUser = System.Configuration.ConfigurationSettings.AppSettings["FtpUser"];

        public static string FtpPwd = System.Configuration.ConfigurationSettings.AppSettings["FtpPwd"];

        private void Connect(String path)//连接ftp

        {

            // 根据uri创建FtpWebRequest对象

            reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(path));

            // 指定数据传输类型

            reqFTP.UseBinary = true;

            // ftp用户名和密码

            reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);

        }

        public FtpFile(string ftpServerIP, string ftpUserID, string ftpPassword)

        {

            this.ftpServerIP = ftpServerIP;

            this.ftpUserID = ftpUserID;

            this.ftpPassword = ftpPassword;

        }

        public FtpFile()

        {

            this.ftpServerIP = FtpServer;

            this.ftpUserID = FtpUser;

            this.ftpPassword = FtpPwd;

        }

足球中国 2012-03-16

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private void Download(string filePath, string fileName)

{

    FtpWebRequest reqFTP;



    try

    {

        FileStream outputStream = new FileStream(filePath + "\\" + fileName, FileMode.Create); 



        reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + fileName));



        reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;



        reqFTP.UseBinary = true;



        reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);



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



        Stream ftpStream = response.GetResponseStream();



        long cl = response.ContentLength;



        int bufferSize = 2048;



        int readCount;



        byte[] buffer = new byte[bufferSize];



        readCount = ftpStream.Read(buffer, 0, bufferSize);



        while (readCount > 0)

        {

            outputStream.Write(buffer, 0, readCount);



            readCount = ftpStream.Read(buffer, 0, bufferSize);

        }



        ftpStream.Close();



        outputStream.Close();



        response.Close();

    }

    catch (Exception ex)

    {

        MessageBox.Show(ex.Message);

    }

}

OOPhaisky 2012-03-16

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补充一句，我是新手，所以仅有思路我是无法完成的。

OOPhaisky 2012-03-16

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to Chinajiyong:

“http://blog.csdn.net/ou8811/article/details/5295780”这个网站我看过。

他的思路我明白，可是他的代码不完全，根本运行不了，所以我题目中说了，不要给这种连接，我要的是确确实实可以编译通过且功能可用的完整代码。

求C# FTP下载文件夹的代码

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