LYGJJ_4.0/Web/App_Code/UPloadFile.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Web;

/// <summary>
/// UPloadFile 的摘要说明
/// </summary>
public class UPloadFile
{
    public string ftpPath;
    public string ftpdir;
    public string ftpUserID;
    public string ftpPassword;

    /// <summary>
    /// 上传文件
    /// </summary>
    /// <param name="fileinfo">需要上传的文件</param>
    public string UploadLocalToFtp(string localFile)
    {
        string res = "";
        if (!File.Exists(localFile))
        {
            res = "文件：“" + localFile + "” 不存在！";
            return res;
        }
        FileInfo fileInf = new FileInfo(localFile);
        //改后文件
        #region 改后文件
        //string temp_filename = localFile.Split('\\').Last().Split('.')[0] + "_temp";
        //string localfileAft = Path.GetDirectoryName(localFile) + "\\" + temp_filename + ".wav";
        //FileInfo fileInfAft = new FileInfo(localfileAft);
        #endregion
        string ftpURI = "ftp://" + ftpPath + "/";
        if (!string.IsNullOrEmpty(ftpdir))
            ftpURI = ftpURI + ftpdir + "/";
        string uri = ftpURI + fileInf.Name;
        //string uriAft = ftpURI + fileInfAft.Name;
        FtpWebRequest reqFTP;
        //20180209
        //System.GC.Collect();
        reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));// 根据uri创建FtpWebRequest对象   
        reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);// ftp用户名和密码  
        reqFTP.KeepAlive = false;// 默认为true，连接不会被关闭 // 在一个命令之后被执行  
        reqFTP.Method = WebRequestMethods.Ftp.UploadFile;// 指定执行什么命令  
        reqFTP.UseBinary = true;// 指定数据传输类型  
        reqFTP.UsePassive = true;
        reqFTP.ContentLength = fileInf.Length;// 上传文件时通知服务器文件的大小  
        int buffLength = 2048;// 缓冲大小设置为2kb  
        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();
        using (FileStream fs = new FileStream(localFile, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
        {
            try
            {
                res += uri;// + localFile;
                using (Stream strm = reqFTP.GetRequestStream())// 把上传的文件写入流
                {
                    //StreamReader strm = new StreamReader(fs, System.Text.Encoding.Default);
                    contentLen = fs.Read(buff, 0, buffLength);// 每次读文件流的2kb 
                    while (contentLen != 0)// 流内容没有结束  
                    {
                        // 把内容从file stream 写入 upload stream  
                        strm.Write(buff, 0, contentLen);
                        contentLen = fs.Read(buff, 0, buffLength);
                    }
                    //StringBuilder sb = new StringBuilder();
                    //while (!strm.EndOfStream)
                    //{
                    //    sb.AppendLine(strm.ReadLine() + "<br>");
                    //}
                }
                // 关闭两个流  
                //strm.Close();
                fs.Close();
                res = "上传成功！";
            }
            catch (Exception ex)
            {
                res += "上传文件【" + ftpPath + "/" + fileInf.Name + "】时，发生错误：" + ex.Message + "<br/>。路径：" + localFile;
            }
        }
        //FtpWebRequest reqFTP1;
        ////20180209
        ////System.GC.Collect();
        //reqFTP1 = (FtpWebRequest)FtpWebRequest.Create(new Uri(uriAft));// 根据uri创建FtpWebRequest对象   
        //reqFTP1.Credentials = new NetworkCredential(ftpUserID, ftpPassword);// ftp用户名和密码  
        //reqFTP1.KeepAlive = false;// 默认为true，连接不会被关闭 // 在一个命令之后被执行  
        //reqFTP1.Method = WebRequestMethods.Ftp.UploadFile;// 指定执行什么命令  
        //reqFTP1.UseBinary = true;// 指定数据传输类型  
        //reqFTP1.UsePassive = true;
        //reqFTP1.ContentLength = fileInfAft.Length;// 上传文件时通知服务器文件的大小  
        //int buffLengthaft = 2048;// 缓冲大小设置为2kb  
        //byte[] buffaft = new byte[buffLengthaft];
        //int contentLenaft;

        // 打开一个文件流 (System.IO.FileStream) 去读上传的文件  
        //FileStream fs = fileInf.OpenRead();
        //using (FileStream fs1 = new FileStream(localfileAft, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
        //{
        //    try
        //    {
        //        res += uriAft + localfileAft;
        //        using (Stream strm1 = reqFTP1.GetRequestStream())// 把上传的文件写入流
        //        {
        //            //StreamReader strm = new StreamReader(fs, System.Text.Encoding.Default);
        //            contentLenaft = fs1.Read(buffaft, 0, buffLengthaft);// 每次读文件流的2kb 
        //            while (contentLenaft != 0)// 流内容没有结束  
        //            {
        //                // 把内容从file stream 写入 upload stream  
        //                strm1.Write(buffaft, 0, contentLenaft);
        //                contentLenaft = fs1.Read(buffaft, 0, buffLengthaft);
        //            }
        //            //StringBuilder sb = new StringBuilder();
        //            //while (!strm.EndOfStream)
        //            //{
        //            //    sb.AppendLine(strm.ReadLine() + "<br>");
        //            //}
        //        }
        //        // 关闭两个流  
        //        //strm.Close();
        //        fs1.Close();
        //        res = "上传成功！";
        //    }
        //    catch (Exception ex)
        //    {
        //        res += "上传文件【" + ftpPath + "/" + fileInf.Name + "】时，发生错误：" + ex.Message + "<br/>。路径：" + localFile;
        //    }
        //}
        return res;
    }

    /// <summary>  
    /// 判断ftp服务器上该目录是否存在  
    /// </summary>  
    /// <param name="ftpPath">FTP路径目录</param>  
    /// <param name="dirName">目录上的文件夹名称</param>  
    /// <returns></returns>  
    private bool CheckDirectoryExist(string ftpPath, string dirName)
    {
        bool flag = true;
        try
        {
            //实例化FTP连接  
            FtpWebRequest ftp = (FtpWebRequest)FtpWebRequest.Create(ftpPath + dirName);
            ftp.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
            ftp.Method = WebRequestMethods.Ftp.ListDirectory;
            FtpWebResponse response = (FtpWebResponse)ftp.GetResponse();
            response.Close();
        }
        catch (Exception)
        {
            flag = false;
        }
        return flag;
    }

    /// <summary>  
    /// 创建文件夹    
    /// </summary>    
    /// <param name="ftpPath">FTP路径</param>    
    /// <param name="dirName">创建文件夹名称</param>    
    public void MakeDir(string ftpPath, string dirName)
    {
        FtpWebRequest reqFTP;
        try
        {
            string ui = (ftpPath + dirName).Trim();
            reqFTP = (FtpWebRequest)FtpWebRequest.Create(ui);
            reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;
            reqFTP.UseBinary = true;
            reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
            FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
            Stream ftpStream = response.GetResponseStream();
            ftpStream.Close();
            response.Close();
            //Response.Write("文件夹【" + dirName + "】创建成功！<br/>");
        }
        catch (Exception ex)
        {
            //Response.Write("新建文件夹【" + dirName + "】时，发生错误：" + ex.Message);
        }

    }

    /// <summary>
    /// 下载文件
    /// </summary>
    /// <param name="serverName">服务器文件名称</param>
    /// <param name="localName">需要保存在本地的文件名称</param>
    /// <returns>下载成功返回 true</returns>
    //public bool Download(string serverName, string localName)
    //{
    //    bool result = false;
    //    using (FileStream fs = new FileStream(localName, FileMode.OpenOrCreate))
    //    {
    //        try
    //        {
    //            string url = UrlCombine(Host, RemotePath, serverName);
    //            Console.WriteLine(url);

    //            FtpWebRequest request = CreateConnection(url, WebRequestMethods.Ftp.DownloadFile);
    //            request.ContentOffset = fs.Length;
    //            using (FtpWebResponse response = (FtpWebResponse)request.GetResponse())
    //            {
    //                fs.Position = fs.Length;
    //                byte[] buffer = new byte[1024 * 4];
    //                int count = response.GetResponseStream().Read(buffer, 0, buffer.Length);
    //                while (count > 0)
    //                {
    //                    fs.Write(buffer, 0, count);
    //                    count = response.GetResponseStream().Read(buffer, 0, buffer.Length);
    //                }
    //                response.GetResponseStream().Close();
    //            }
    //            result = true;
    //        }
    //        catch (WebException ex)
    //        {
    //            // 处理ftp连接中的异常
    //        }
    //    }
    //    return result;
    //}

}