远程下载帮助类

来源：互联网发布：mysql存储过程写法编辑：程序博客网时间：2024/05/16 23:44
//======================================================================////        Copyright (C) 2013 仙剑//        All rights reserved//        guid1:                    beaa7167-1dd4-423a-89b1-a824572332ea//        CLR Version:              4.0.30319.18063//        Name:                     DownloadHelper//        Computer:                 CHARLEY-PC//        Organization:             VoiceCyber//        Namespace:                VoiceCyber.Common//        File Name:                DownloadHelper////        created by Charley at 2014/3/22 17:55:05//        http://blog.csdn.net/jian200801 ////======================================================================using System;using System.IO;using System.Net;using System.Text;namespace VoiceCyber.Common{    /// <summary>    /// 文件下载帮助类，支持http和ftp下载     /// 这是一个静态类    /// </summary>    public static class DownloadHelper    {        /// <summary>        /// FTP方式下载文件        /// </summary>        /// <param name="parameters">        /// 下载参数        /// 0：服务器地址        /// 1：端口        /// 2：登录名(如果为空，则匿名下载）        /// 3：登录密码        /// 4：源文件路径        /// 5：存放路径        /// 6: 如果目标文件已经存在，是否替换文件（可选）        /// </param>        /// <returns></returns>        public static OperationReturn DownloadFileFTP(string[] parameters)        {            OperationReturn optReturn = new OperationReturn();            optReturn.Result = true;            optReturn.Code = Defines.RET_SUCCESS;            try            {                if (parameters == null || parameters.Length < 6)                {                    optReturn.Result = false;                    optReturn.Code = Defines.RET_PARAM_INVALID;                    optReturn.Message = string.Format("Download parameter is null or length invalid.");                    return optReturn;                }                string strTargetFile = parameters[5];                string strTargetDir = strTargetFile.Substring(0, strTargetFile.LastIndexOf("\\"));                if (!Directory.Exists(strTargetDir))                {                    Directory.CreateDirectory(strTargetFile);                }                if (File.Exists(strTargetFile))                {                    if (parameters.Length > 6 && parameters[6] == "1")                    {                        File.Delete(strTargetFile);                    }                    else                    {                        optReturn.Result = false;                        optReturn.Code = Defines.RET_FILE_ALREADY_EXIST;                        optReturn.Message = string.Format("Target file already exist.\t{0}", strTargetFile);                        return optReturn;                    }                }                string strRequest = string.Empty;                if (string.IsNullOrEmpty(parameters[2]))                {                    strRequest = string.Format("ftp://{0}:{1}/{2}", parameters[0], parameters[1], parameters[4]);                }                else                {                    strRequest = string.Format("ftp://{0}:{1}@{2}:{3}/{4}", parameters[2], parameters[3], parameters[0], parameters[1], parameters[4]);                }                FtpWebRequest ftpWebRequest = (FtpWebRequest)WebRequest.Create(strRequest);                WebResponse ftpWebResponse = ftpWebRequest.GetResponse();                Stream stream = ftpWebResponse.GetResponseStream();                if (stream == null)                {                    optReturn.Result = false;                    optReturn.Code = Defines.RET_OBJECT_NULL;                    optReturn.Message = string.Format("Response stream is null");                    return optReturn;                }                using (FileStream fileStream = new FileStream(strTargetFile, FileMode.Create, FileAccess.Write))                {                    byte[] buffer = new byte[1024];                    int readed = stream.Read(buffer, 0, 1024);                    while (readed > 0)                    {                        fileStream.Write(buffer, 0, readed);                        readed = stream.Read(buffer, 0, 1024);                    }                    fileStream.Close();                    stream.Close();                }                optReturn.StringValue = strTargetFile;            }            catch (Exception ex)            {                optReturn.Result = false;                optReturn.Code = Defines.RET_FAIL;                optReturn.Message = ex.Message;                optReturn.Exception = ex;            }            return optReturn;        }        /// <summary>        /// HTTP方式下载文件        /// </summary>        /// <param name="parameters">        /// 下载参数        /// 0：服务器地址        /// 1：端口        /// 2：登录名(如果为空，则匿名下载）        /// 3：登录密码        /// 4：源文件路径        /// 5：存放路径        /// 6: 如果目标文件已经存在，是否替换文件（可选）        /// </param>        /// <returns></returns>        public static OperationReturn DownloadFileHTTP(string[] parameters)        {            OperationReturn optReturn = new OperationReturn();            optReturn.Result = true;            optReturn.Code = Defines.RET_SUCCESS;            try            {                if (parameters == null || parameters.Length < 6)                {                    optReturn.Result = false;                    optReturn.Code = Defines.RET_PARAM_INVALID;                    optReturn.Message = string.Format("Download parameter is null or length invalid.");                    return optReturn;                }                string strTargetFile = parameters[5];                string strTargetDir = strTargetFile.Substring(0, strTargetFile.LastIndexOf("\\"));                if (!Directory.Exists(strTargetDir))                {                    Directory.CreateDirectory(strTargetFile);                }                if (File.Exists(strTargetFile))                {                    if (parameters.Length > 6 && parameters[6] == "1")                    {                        File.Delete(strTargetFile);                    }                    else                    {                        optReturn.Result = false;                        optReturn.Code = Defines.RET_FILE_ALREADY_EXIST;                        optReturn.Message = string.Format("Target file already exist.\t{0}", strTargetFile);                        return optReturn;                    }                }                string strRequest = string.Format("http://{0}:{1}/{2}", parameters[0], parameters[1], parameters[4]);                HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(strRequest);                if (!string.IsNullOrEmpty(parameters[2]))                {                    httpWebRequest.Credentials = new NetworkCredential(parameters[2], parameters[3]);                    string code = Convert.ToBase64String(Encoding.ASCII.GetBytes(string.Format("{0}:{1}", parameters[2], parameters[3])));                    httpWebRequest.Headers.Add("Authorization", "Basic" + code);                }                WebResponse httpWebResponse = httpWebRequest.GetResponse();                Stream stream = httpWebResponse.GetResponseStream();                if (stream == null)                {                    optReturn.Result = false;                    optReturn.Code = Defines.RET_OBJECT_NULL;                    optReturn.Message = string.Format("Response stream is null");                    return optReturn;                }                using (FileStream fileStream = new FileStream(strTargetFile, FileMode.Create, FileAccess.Write))                {                    byte[] buffer = new byte[1024];                    int readed = stream.Read(buffer, 0, 1024);                    while (readed > 0)                    {                        fileStream.Write(buffer, 0, readed);                        readed = stream.Read(buffer, 0, 1024);                    }                    fileStream.Close();                    stream.Close();                }                optReturn.StringValue = strTargetFile;            }            catch (Exception ex)            {                optReturn.Result = false;                optReturn.Code = Defines.RET_FAIL;                optReturn.Message = ex.Message;                optReturn.Exception = ex;            }            return optReturn;        }    }}
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