app.config中
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<appSettings>
<add key="HostName" value="172.31.68.95"/>
</appSettings>
</configuration>
在program.cs中调用
static void Main(string[] args)
{
//上传：上传的路径、要上传的文件路径，上传到的地址，ftp用户名、密码
string hostName = ConfigurationManager.AppSettings["HostName"].ToString();
System.IO.FileInfo fi = new System.IO.FileInfo("D://my//upload.txt");//文件必须存在，若不存在要报错
FileOperator.UploadFile(fi, "/aa", hostName, "", "");
}
写一个类。
using System;
using System.Data;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Xml.Linq;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Net;
/// <summary>
/// Summary description for FtpUpandDwonFile
/// </summary>
public class FtpUtility
{
public FtpUtility()
{
//
// TODO: Add constructor logic here
//
}
private static FtpWebRequest GetRequest(string URI, string username, string password)
{
FtpWebRequest result = (FtpWebRequest)FtpWebRequest.Create(URI);
result.Credentials = new System.Net.NetworkCredential(username, password);
result.KeepAlive = false;
return result;
}
/// <summary>
/// 上传文件
/// </summary>
/// <param name="fileinfo">需要上传的文件</param>
/// <param name="targetDir">目标路径</param>
/// <param name="hostname">ftp地址</param>
/// <param name="username">ftp用户名</param>
/// <param name="password">ftp密码</param>
public static void UploadFile(FileInfo fileinfo, string targetDir, string hostname, string username, string password)
{
//1. check target
string target;
if (targetDir.Trim() == "")
{
return;
}
target = Guid.NewGuid().ToString(); //使用临时文件名
string URI = "FTP://" + hostname + "/" + targetDir + "/" + target + ".tmp";
///WebClient webcl = new WebClient();
System.Net.FtpWebRequest ftp = GetRequest(URI, username, password);
//设置FTP命令
ftp.Method = System.Net.WebRequestMethods.Ftp.UploadFile;
ftp.UseBinary = true;
ftp.UsePassive = true;
//告诉ftp文件大小
ftp.ContentLength = fileinfo.Length;
const int BufferSize = 2048;
byte[] content = new byte[BufferSize - 1 + 1];
int dataRead;
//上传文件内容
using (FileStream fs = fileinfo.OpenRead())
{
try
{
using (Stream rs = ftp.GetRequestStream())
{
do
{
dataRead = fs.Read(content, 0, BufferSize);
rs.Write(content, 0, dataRead);
} while (!(dataRead < BufferSize));
rs.Close();
}
}
catch (Exception ex) { }
finally
{
fs.Close();
}
}
ftp = null;
//设置FTP命令
ftp = GetRequest(URI, username, password);
ftp.Method = System.Net.WebRequestMethods.Ftp.Rename; //改名
ftp.RenameTo = fileinfo.Name;
try
{
ftp.GetResponse();
}
catch (Exception ex)
{
ftp = GetRequest(URI, username, password);
ftp.Method = System.Net.WebRequestMethods.Ftp.DeleteFile; //删除
ftp.GetResponse();
throw ex;
}
finally
{
//fileinfo.Delete();
}
// 可以记录一个日志 "上传" + fileinfo.FullName + "上传到" + "FTP://" + hostname + "/" + targetDir + "/" + fileinfo.Name + "成功." );
ftp = null;
}
/// <summary>
/// 下载文件
/// </summary>
/// <param name="localDir">本地路径</param>
/// <param name="FtpDir">ftp路径</param>
/// <param name="FtpFile">ftp文件名</param>
/// <param name="hostname">ftp地址</param>
/// <param name="username">ftp用户名</param>
/// <param name="password">ftp密码</param>
public static void DownloadFile(string localDir, string FtpDir, string FtpFile, string hostname, string username, string password)
{
string URI = "FTP://" + hostname + "/" + FtpDir + "/" + FtpFile;
string tmpname = Guid.NewGuid().ToString();
string localfile = localDir + @"\" + tmpname;
System.Net.FtpWebRequest ftp = GetRequest(URI, username, password);
ftp.Method = System.Net.WebRequestMethods.Ftp.DownloadFile;
ftp.UseBinary = true;
ftp.UsePassive = false;
using (FtpWebResponse response = (FtpWebResponse)ftp.GetResponse())
{
using (Stream responseStream = response.GetResponseStream())
{
//loop to read & write to file
using (FileStream fs = new FileStream(localfile, FileMode.CreateNew))
{
try
{
byte[] buffer = new byte[2048];
int read = 0;
do
{
read = responseStream.Read(buffer, 0, buffer.Length);
fs.Write(buffer, 0, read);
} while (!(read == 0));
responseStream.Close();
fs.Flush();
fs.Close();
}
catch (Exception)
{
//catch error and delete file only partially downloaded
fs.Close();
//delete target file as it's incomplete
File.Delete(localfile);
throw;
}
}
responseStream.Close();
}
response.Close();
}
try
{
File.Delete(localDir + @"\" + FtpFile);
File.Move(localfile, localDir + @"\" + FtpFile);
ftp = null;
ftp = GetRequest(URI, username, password);
ftp.Method = System.Net.WebRequestMethods.Ftp.DeleteFile;
ftp.GetResponse();
}
catch (Exception ex)
{
File.Delete(localfile);
throw ex;
}
// 记录日志 "从" + URI.ToString() + "下载到" + localDir + @"\" + FtpFile + "成功." );
ftp = null;
}
/// <summary>
/// 搜索远程文件
/// </summary>
/// <param name="targetDir"></param>
/// <param name="hostname"></param>
/// <param name="username"></param>
/// <param name="password"></param>
/// <param name="SearchPattern"></param>
/// <returns></returns>
public static List<string> ListDirectory(string targetDir, string hostname, string username, string password, string SearchPattern)
{
List<string> result = new List<string>();
try
{
string URI = "FTP://" + hostname + "/" + targetDir + "/" + SearchPattern;
System.Net.FtpWebRequest ftp = GetRequest(URI, username, password);
ftp.Method = System.Net.WebRequestMethods.Ftp.ListDirectory;
ftp.UsePassive = true;
ftp.UseBinary = true;
string str = GetStringResponse(ftp);
str = str.Replace("\r\n", "\r").TrimEnd('\r');
str = str.Replace("\n", "\r");
if (str != string.Empty)
result.AddRange(str.Split('\r'));
return result;
}
catch { }
return null;
}
private static string GetStringResponse(FtpWebRequest ftp)
{
//Get the result, streaming to a string
string result = "";
using (FtpWebResponse response = (FtpWebResponse)ftp.GetResponse())
{
long size = response.ContentLength;
using (Stream datastream = response.GetResponseStream())
{
using (StreamReader sr = new StreamReader(datastream, System.Text.Encoding.Default))
{
result = sr.ReadToEnd();
sr.Close();
}
datastream.Close();
}
response.Close();
}
return result;
}
}