• 上传文件。普通和ftp


    /// 上传文件
    /// </summary>
    /// <param name="path">文件保存位置</param>
    /// <param name="oFile">文件</param>
    /// <returns></returns>
    public string UpLoadFile( System.Web.UI.WebControls.FileUpload fu)
    {
    bool Isftp = true;
    if (Isftp)
    {
    #region Ftp
    try
    {
    string filename = fu.PostedFile.FileName;

    if (fu.PostedFile.InputStream.Length > 5242880)
    {
    return "";
    }
    string DHost = "FTPHost";
    string DPort = "FTPPort";
    string DLogin = "FTPLogin";
    string Dpwd = "FTPpwd";
    string Host = "";
    string Login = "";
    string Password = "";
    string Port = "";
    Host = ConfigurationManager.ConnectionStrings[DHost].ConnectionString;
    Login = ConfigurationManager.ConnectionStrings[DLogin].ConnectionString;
    Password = ConfigurationManager.ConnectionStrings[Dpwd].ConnectionString;
    Port = ConfigurationManager.ConnectionStrings[DPort].ConnectionString;
    FtpWebRequest reqFTP;
    // 根据uri创建FtpWebRequest对象
    Guid gg = Guid.NewGuid();
    string fileName = gg.ToString() + "_" + filename.Substring(filename.LastIndexOf("\\") + 1);
    string path = "ftp://" + Host + "//" + fileName;
    reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(path));
    // ftp用户名和密码
    reqFTP.Credentials = new NetworkCredential(Login, Password);
    // 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;
    // 指定数据传输类型
    reqFTP.UseBinary = true;
    // 上传文件时通知服务器文件的大小
    reqFTP.ContentLength = fu.PostedFile.InputStream.Length;
    // 缓冲大小设置为2kb
    int buffLength = 2048;
    byte[] buff = new byte[buffLength];
    int contentLen;
    // 打开一个文件流 (System.IO.FileStream) 去读上传的文件
    Stream fs = (Stream)fu.PostedFile.InputStream;
    // 把上传的文件写入流
    Stream strm = reqFTP.GetRequestStream();
    // 每次读文件流的2kb
    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 fileName;
    }
    catch (Exception ex)
    {

    return ex.Message;
    }
    #endregion

    }
    else{

    string rStr = "";
    //首先得到上载文件信息和文件流
    //System.Web.HttpFileCollection oFile = System.Web.HttpContext.Current.Request.Files;

    string filePath = fu.FileName; ;
    Guid gg = Guid.NewGuid();

    string fileName = gg.ToString()+"_"+ filePath.Substring(filePath.LastIndexOf("\\") + 1);
    try
    {
    ///
    byte[] b = new byte[fu.PostedFile.InputStream.Length];
    Stream fs;
    //InLoadFiles oLoad = new InLoadFiles();
    //UpLoad u = new UpLoad();
    fs = (Stream)fu.PostedFile.InputStream;
    fs.Read(b, 0,(int)fu.PostedFile.InputStream.Length);
    //取得服务器库物理地址
    string libPath = ConfigurationManager.AppSettings["LibPath"];

    if (string.IsNullOrEmpty(libPath))
    throw new Exception("服务器库物理地址配置信息找不到");
    string path = string.Format(@"{0}\{1}", libPath, fileName);

    rStr = UpLoadStream(b, fileName, path);

    }
    catch (Exception error)
    {
    rStr = error.Message;
    //Response.Write(error.Message);
    //Response.End();
    }
    return rStr;
    }
    }

    /// <summary>
    /// 上传文件流
    /// </summary>
    /// <param name="fs">流文件</param>
    /// <param name="fileName">文件名称</param>
    /// <param name="requestPath">保存路径</param>
    /// <returns></returns>
    protected string UpLoadStream(byte[] fs, string fileName, string requestPath)
    {
    try
    {
    MemoryStream m = new MemoryStream(fs);
    ///定义实际文件对象,保存上载的文件。
    FileStream f = new FileStream(requestPath, FileMode.Create);
    ///把内内存里的数据写入物理文件
    m.WriteTo(f);
    m.Close();
    f.Close();
    f = null;
    m = null;
    return fileName;
    }
    catch (Exception error)
    {
    return error.Message;
    }
    }

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  • 原文地址:https://www.cnblogs.com/lucoo/p/2957079.html
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