用于ftp断点续传，得到本地和ftp服务器上的 文件大小

 

用于ftp断点续传，得到本地和ftp服务器上的 文件大小

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Net;

namespace Capture
{
    /// <summary>
    /// 用于ftp断点续传，得到文件大小
    /// </summary>
    public class FileHelp
    {
        private static string ftpServerIP;// IP:Port
        /// <summary>
        /// ftp IP+Port
        /// </summary>
        public static string _ftpServerIP
        {
            get { return FileHelp.ftpServerIP; }
            set { FileHelp.ftpServerIP = value; }
        }
        private static string ftpUserID;
        /// <summary>
        /// ftp 用户名
        /// </summary>
        public static string _ftpUserID
        {
            get { return FileHelp.ftpUserID; }
            set { FileHelp.ftpUserID = value; }
        }
        private static string ftpPassword;

        public static string _ftpPassword
        {
            get { return FileHelp.ftpPassword; }
            set { FileHelp.ftpPassword = value; }
        }
        /// <summary>
        /// 得到ftp上的文件的大小
        /// </summary>
        /// <param name="filename">文件名</param>
        /// <returns></returns>
        public static long GetFileSizeFormFtp(object filename)
        {
            FtpWebRequest reqFTP;
            long fileSize = 0;
            try
            {
                reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + _ftpServerIP + "/" + filename.ToString()));

                reqFTP.Method = WebRequestMethods.Ftp.GetFileSize;
                reqFTP.UseBinary = true;
                reqFTP.Credentials = new NetworkCredential(_ftpUserID, _ftpPassword);

                FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
                Stream ftpStream = response.GetResponseStream();
                fileSize = response.ContentLength;

                ftpStream.Close();
                response.Close();
            }
            catch (Exception e)
            {
                ErrorLog.ConnError("FileHelp.cs-->得到ftp上的文件的大小函数出错："+e.Message);
            }
            return fileSize;
        }

        /// <summary>
        /// 得到本地文件目录总大小
        /// </summary>
        /// <param name="dirPath">文件、文件夹 路径</param>
        /// <returns></returns>
        public static long GetDirectoryLength(string dirPath)
        {
            //判断给定的路径是否存在,如果不存在则退出
            if (!Directory.Exists(dirPath))
                return 0;
            long len = 0;

            try
            {
                //定义一个DirectoryInfo对象
                DirectoryInfo di = new DirectoryInfo(dirPath);

                //通过GetFiles方法,获取di目录中的所有文件的大小
                foreach (FileInfo fi in di.GetFiles())
                {
                    len += fi.Length;
                }

                //获取di中所有的文件夹,并存到一个新的对象数组中,以进行递归
                DirectoryInfo[] dis = di.GetDirectories();
                if (dis.Length > 0)
                {
                    for (int i = 0; i < dis.Length; i++)
                    {
                        len += GetDirectoryLength(dis[i].FullName);
                    }
                }
            }
            catch (Exception e)
            {
                ErrorLog.ConnError("FileHelp.cs-->得到本地文件目录总大小函数出错：" + e.Message);

            }
            return len;
        }
        /// <summary>
        /// 得到本地文件目录总大小 重载
        /// </summary>
        /// <param name="filePath">文件、文件夹 路径</param>
        /// <returns></returns>
        public static long GetDirectoryLength2(string filePath)
        {
            long temp = 0;

            try
            {
                //判断当前路径所指向的是否为文件
                if (File.Exists(filePath) == false)
                {
                    string[] str1 = Directory.GetFileSystemEntries(filePath);
                    foreach (string s1 in str1)
                    {
                        temp += GetDirectoryLength2(s1);
                    }
                }
                else
                {

                    //定义一个FileInfo对象,使之与filePath所指向的文件向关联,

                    //以获取其大小
                    FileInfo fileInfo = new FileInfo(filePath);
                    return fileInfo.Length;
                }
            }
            catch (Exception e)
            {

                ErrorLog.ConnError("FileHelp.cs-->得到本地文件目录总大小 重载 函数出错：" + e.Message);
            }
            return temp;
        }
    }
}