public class FtpService
{
#region Fields and attributes
private readonly int BufLen = 2048;
/// <summary>
/// ftp服务器地址
/// </summary>
private readonly string FtpServer = Properties.Settings.Default.FtpServer;
/// <summary>
/// ftp用户名
/// </summary>
private readonly string FtpUser = Properties.Settings.Default.user;
/// <summary>
/// ftp密码
/// </summary>
private readonly string FtpPassword = Properties.Settings.Default.password;
#endregion
#region Events
/// <summary>
/// 文件上传结果
/// </summary>
/// <param>true-成功，false-失败</param>
/// <param>信息</param>
public event Action<bool, string> EventUploadResult = null;
/// <summary>
/// 文件上传进度
/// </summary>
/// <param>文件已上传大小</param>
/// <param>文件总大小</param>
/// <param>文件名称</param>
public event Action<long, long, string> EventUploadFileProgress = null;
/// <summary>
/// 所有文件上传进度
/// </summary>
/// <param>文件已上传数</param>
/// <param>文件总总数</param>
public event Action<int, int> EventUploadBatchFilesProgress = null;
/// <summary>
/// 文件下载结果
/// </summary>
/// <param>true-成功，false-失败</param>
/// <param>信息</param>
public event Action<bool, string> EventDonwloadResult = null;
/// <summary>
/// 文件下载进度
/// </summary>
/// <param>文件已下载大小</param>
/// <param>文件总大小</param>
/// <param>文件名称</param>
public event Action<long, long, string> EventDonwloadFileProgress = null;
/// <summary>
/// 所有文件下载进度
/// </summary>
/// <param>文件已下载数</param>
/// <param>文件总总数</param>
public event Action<int, int> EventDonwloadBatchFilesProgress = null;
#endregion
#region public methods
/// <summary>
/// 上传文件到FTPServer
/// </summary>
/// <param name="file"></param>
public bool UploadFile(string localFilePath)
{
if (string.IsNullOrEmpty(localFilePath))
return false;
bool ret = true;
FtpWebRequest reqFtp = null;
try
{
FileInfo localFileInfo = new FileInfo(localFilePath);
string serverFilePath = $@"{FtpServer}\{ localFileInfo.Name}";
//FtpWebRequest配置
reqFtp = (FtpWebRequest)FtpWebRequest.Create(new Uri(serverFilePath));
reqFtp.UseBinary = true;
reqFtp.Credentials = new NetworkCredential(FtpUser, FtpPassword); //设置通信凭据
reqFtp.KeepAlive = false;
reqFtp.Method = WebRequestMethods.Ftp.UploadFile;
reqFtp.ContentLength = localFileInfo.Length;
//读本地文件数据并上传
using (FileStream fileStream = localFileInfo.OpenRead())
{
using (Stream stream = reqFtp.GetRequestStream())
{
long totalLen = 0;
int contentLen = 0;
byte[] buff = new byte[BufLen];
while ((contentLen = fileStream.Read(buff, 0, BufLen)) > 0)
{
stream.Write(buff, 0, contentLen);
totalLen += contentLen;
if (EventUploadFileProgress != null)
EventUploadFileProgress(totalLen, localFileInfo.Length, localFileInfo.Name);
}
}
}
ret = true;
if (EventUploadResult != null)
EventUploadResult(ret, $@"{localFilePath} : 上传成功！");
}
catch (Exception ex)
{
ret = false;
if (EventUploadResult != null)
EventUploadResult(ret, $@"{localFilePath} : 上传失败！Exception : {ex.ToString()}");
}
finally
{
if (reqFtp != null)
reqFtp.Abort();
}
return ret;
}
/// <summary>
/// 从FTPServer上下载文件
/// </summary>
public bool DownloadFile(string fileName, long length, string localDirectory)
{
if (string.IsNullOrEmpty(localDirectory) || string.IsNullOrEmpty(fileName))
return false;
bool ret = true;
FtpWebRequest reqFtp = null;
FtpWebResponse respFtp = null;
string localFilePath = $@"{localDirectory}\{fileName}";
string serverFilePath = $@"{FtpServer}\{fileName}";
try
{
if (File.Exists(localFilePath))
File.Delete(localFilePath);
//建立ftp连接
reqFtp = (FtpWebRequest)FtpWebRequest.Create(new Uri(serverFilePath));
reqFtp.UseBinary = true;
reqFtp.Credentials = new NetworkCredential(FtpUser, FtpPassword);
reqFtp.KeepAlive = false;
reqFtp.Method = WebRequestMethods.Ftp.DownloadFile;
//读服务器文件数据并写入本地文件
respFtp = reqFtp.GetResponse() as FtpWebResponse;
using (Stream stream = respFtp.GetResponseStream())
{
using (FileStream fileStream = new FileStream(localFilePath, FileMode.Create))
{
long totalLen = 0;
int contentLen = 0;
byte[] buff = new byte[BufLen];
while ((contentLen = stream.Read(buff, 0, BufLen)) > 0)
{
fileStream.Write(buff, 0, contentLen);
totalLen += contentLen;
if (EventDonwloadFileProgress != null && length > 0)
EventDonwloadFileProgress(totalLen, length, fileName);
}
}
}
ret = true;
if (EventDonwloadResult != null)
EventDonwloadResult(ret, $@"{serverFilePath} : 下载成功！");
}
catch (Exception ex)
{
ret = false;
if (EventDonwloadResult != null)
EventDonwloadResult(ret, $@"{serverFilePath} : 下载失败！Exception : {ex.ToString()}");
}
finally
{
if (reqFtp != null)
reqFtp.Abort();
if (respFtp != null)
respFtp.Close();
}
return ret;
}
/// <summary>
/// 批量上传文件
/// </summary>
/// <param name="localFilePaths"></param>
public void UploadFiles(List<string> localFilePaths)
{
if (localFilePaths == null || localFilePaths.Count == 0)
return;
int i = 1;
foreach (var localFilePath in localFilePaths)
{
UploadFile(localFilePath);
if (EventUploadBatchFilesProgress != null)
EventUploadBatchFilesProgress(i++, localFilePaths.Count);
}
}
/// <summary>
/// 批量下载文件
/// </summary>
/// <param name="fileNames"></param>
/// <param name="localDirectory"></param>
public void DownloadFiles(List<FileModel> files, string localDirectory)
{
if (files == null || files.Count == 0 || string.IsNullOrEmpty(localDirectory))
return;
int i = 1;
foreach (var file in files)
{
DownloadFile(file.Name, file.Size, localDirectory);
if (EventDonwloadBatchFilesProgress != null)
EventDonwloadBatchFilesProgress(i++, files.Count);
}
}
/// <summary>
/// 异步上传文件到FTPServer
/// </summary>
/// <param name="file"></param>
public async Task<bool> UploadFileAsync(string localFilePath)
{
if (string.IsNullOrEmpty(localFilePath))
return false;
bool ret = true;
FtpWebRequest reqFtp = null;
try
{
FileInfo localFileInfo = new FileInfo(localFilePath);
string serverFilePath = $@"{FtpServer}\{ localFileInfo.Name}";
//FtpWebRequest配置
reqFtp = (FtpWebRequest)FtpWebRequest.Create(new Uri(serverFilePath));
reqFtp.UseBinary = true;
reqFtp.Credentials = new NetworkCredential(FtpUser, FtpPassword); //设置通信凭据
reqFtp.KeepAlive = false;
reqFtp.Method = WebRequestMethods.Ftp.UploadFile;
reqFtp.ContentLength = localFileInfo.Length;
//读本地文件数据并上传
using (FileStream fileStream = localFileInfo.OpenRead())
{
using (Stream stream = await reqFtp.GetRequestStreamAsync())
{
long totalLen = 0;
int contentLen = 0;
byte[] buff = new byte[BufLen];
while ((contentLen = await fileStream.ReadAsync(buff, 0, BufLen)) > 0)
{
await stream.WriteAsync(buff, 0, contentLen);
totalLen += contentLen;
if (EventUploadFileProgress != null)
EventUploadFileProgress(totalLen, localFileInfo.Length, localFileInfo.Name);
}
}
}
ret = true;
if (EventUploadResult != null)
EventUploadResult(ret, $@"{localFilePath} : 上传成功！");
}
catch (Exception ex)
{
ret = false;
if (EventUploadResult != null)
EventUploadResult(ret, $@"{localFilePath} : 上传失败！Exception : {ex.ToString()}");
}
finally
{
if (reqFtp != null)
reqFtp.Abort();
}
return ret;
}
/// <summary>
/// 异步从FTPServer上下载文件
/// </summary>
public async Task<bool> DownloadFileAsync(string fileName, long length, string localDirectory)
{
if (string.IsNullOrEmpty(localDirectory) || string.IsNullOrEmpty(fileName))
return false;
bool ret = true;
FtpWebRequest reqFtp = null;
FtpWebResponse respFtp = null;
string localFilePath = $@"{localDirectory}\{fileName}";
string serverFilePath = $@"{FtpServer}\{fileName}";
try
{
if (File.Exists(localFilePath))
File.Delete(localFilePath);
//建立ftp连接
reqFtp = (FtpWebRequest)FtpWebRequest.Create(new Uri(serverFilePath));
reqFtp.UseBinary = true;
reqFtp.Credentials = new NetworkCredential(FtpUser, FtpPassword);
reqFtp.KeepAlive = false;
reqFtp.Method = WebRequestMethods.Ftp.DownloadFile;
//读服务器文件数据并写入本地文件
respFtp = await reqFtp.GetResponseAsync() as FtpWebResponse;
using (Stream stream = respFtp.GetResponseStream())
{
using (FileStream fileStream = new FileStream(localFilePath, FileMode.Create))
{
long totalLen = 0;
int contentLen = 0;
byte[] buff = new byte[BufLen];
while ((contentLen = await stream.ReadAsync(buff, 0, BufLen)) > 0)
{
await fileStream.WriteAsync(buff, 0, contentLen);
totalLen += contentLen;
if (EventDonwloadFileProgress != null && length > 0)
EventDonwloadFileProgress(totalLen, length, fileName);
}
}
}
ret = true;
if (EventDonwloadResult != null)
EventDonwloadResult(ret, $@"{serverFilePath} : 下载成功！");
}
catch (Exception ex)
{
ret = false;
if (EventDonwloadResult != null)
EventDonwloadResult(ret, $@"{serverFilePath} : 下载失败！Exception : {ex.ToString()}");
}
finally
{
if (reqFtp != null)
reqFtp.Abort();
if (respFtp != null)
respFtp.Close();
}
return ret;
}
/// <summary>
/// 异步批量上传文件
/// </summary>
/// <param name="localFilePaths"></param>
public async void UploadFilesAsync(List<string> localFilePaths)
{
if (localFilePaths == null || localFilePaths.Count == 0)
return;
int i = 1;
foreach (var localFilePath in localFilePaths)
{
await UploadFileAsync(localFilePath);
if (EventUploadBatchFilesProgress != null)
EventUploadBatchFilesProgress(i++, localFilePaths.Count);
}
}
/// <summary>
/// 异步批量下载文件
/// </summary>
/// <param name="fileNames"></param>
/// <param name="localDirectory"></param>
public async void DownloadFilesAsync(List<FileModel> files, string localDirectory)
{
if (files == null || files.Count == 0 || string.IsNullOrEmpty(localDirectory))
return;
int i = 1;
foreach (var file in files)
{
await DownloadFileAsync(file.Name, file.Size, localDirectory);
if (EventDonwloadBatchFilesProgress != null)
EventDonwloadBatchFilesProgress(i++, files.Count);
System.Threading.Thread.Sleep(1000);
}
}
/// <summary>
/// 读取远程文件的内容
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
public string ReadFromFile(string serverFilePath)
{
if (string.IsNullOrEmpty(serverFilePath))
return "";
string ret = "";
FtpWebRequest reqFtp = null;
FtpWebResponse respFtp = null;
try
{
//建立ftp连接
reqFtp = (FtpWebRequest)FtpWebRequest.Create(new Uri(serverFilePath));
reqFtp.UseBinary = true;
reqFtp.Credentials = new NetworkCredential(FtpUser, FtpPassword);
reqFtp.KeepAlive = false;
reqFtp.Method = WebRequestMethods.Ftp.DownloadFile;
respFtp = reqFtp.GetResponse() as FtpWebResponse;
using (Stream stream = respFtp.GetResponseStream())
{
using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
{
ret = reader.ReadToEnd();
}
}
}
catch (Exception ex)
{
ret = "";
throw ex;
}
finally
{
if (reqFtp != null)
reqFtp.Abort();
if (respFtp != null)
respFtp.Close();
}
return ret;
}
/// <summary>
/// 读取远程文件的内容
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
public async Task<string> ReadFromFileAsync(string serverFilePath)
{
if (string.IsNullOrEmpty(serverFilePath))
return "";
string ret = "";
FtpWebRequest reqFtp = null;
FtpWebResponse respFtp = null;
try
{
//建立ftp连接
reqFtp = (FtpWebRequest)FtpWebRequest.Create(new Uri(serverFilePath));
reqFtp.UseBinary = true;
reqFtp.Credentials = new NetworkCredential(FtpUser, FtpPassword);
reqFtp.KeepAlive = false;
reqFtp.Method = WebRequestMethods.Ftp.DownloadFile;
respFtp = reqFtp.GetResponse() as FtpWebResponse;
using (Stream stream = respFtp.GetResponseStream())
{
using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
{
ret = await reader.ReadToEndAsync();
}
}
}
catch (Exception ex)
{
ret = "";
throw ex;
}
finally
{
if (reqFtp != null)
reqFtp.Abort();
if (respFtp != null)
respFtp.Close();
}
return ret;
}
#endregion
}