public class FtpState
{
private ManualResetEvent wait;
private FtpWebRequest request;
private string fileName;
private Exception operationException = null;
string status;
public FtpState()
{
wait = new ManualResetEvent(false);
}
public ManualResetEvent OperationComplete
{
get { return wait; }
}
public FtpWebRequest Request
{
get { return request; }
set { request = value; }
}
public string FileName
{
get { return fileName; }
set { fileName = value; }
}
public Exception OperationException
{
get { return operationException; }
set { operationException = value; }
}
public string StatusDescription
{
get { return status; }
set { status = value; }
}
}
class FTPHelper
{
string ftpUserID, ftpPassword;
FtpWebRequest reqFTP;
string _ftpRoot;
string ftpRoot
{
get
{
if (!_ftpRoot.EndsWith("/")) _ftpRoot += "/";
return _ftpRoot;
}
set
{
_ftpRoot = value;
}
}
/// <summary>
///
/// </summary>
/// <param name="ftpRoot">如：(ftp://120.197.84.46:3796/ftproot/)</param>
/// <param name="ftpUserID"></param>
/// <param name="ftpPassword"></param>
public FTPHelper(string ftpRoot, string ftpUserID, string ftpPassword)
{
this.ftpRoot = ftpRoot;
this.ftpUserID = ftpUserID;
this.ftpPassword = ftpPassword;
}
/// <summary>
/// 连接ftp
/// </summary>
/// <param name="path"></param>
public void Connect(string path)//连接ftp
{
// if (reqFTP != null) return;
// 根据uri创建FtpWebRequest对象
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(path));
// 指定数据传输类型
reqFTP.UseBinary = true;
// ftp用户名和密码
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
}
/// <summary>
/// 从ftp服务器上获得文件列表
/// </summary>
/// <param name="path"></param>
/// <param name="WRMethods"></param>
/// <returns></returns>
public string[] GetFileList(string path, string WRMethods)
{
string[] downloadFiles;
StringBuilder result = new StringBuilder();
try
{
Connect(path);
reqFTP.Method = WRMethods;
WebResponse response = reqFTP.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream(), System.Text.Encoding.Default);//中文文件名
string line = reader.ReadLine();
while (line != null)
{
result.Append(line);
result.Append("\n");
line = reader.ReadLine();
}
// to remove the trailing '\n'
result.Remove(result.ToString().LastIndexOf('\n'), 1);
reader.Close();
response.Close();
return result.ToString().Split('\n');
}
catch (Exception ex)
{
Sxmobi.LogHelper.Error(this.GetType().ToString(), ex.Message, ex);
downloadFiles = null;
return downloadFiles;
}
}
/// <summary>
/// 从ftp服务器上获得文件列表
/// </summary>
/// <param name="path">指定目录</param>
/// <returns></returns>
public string[] GetFileList(string path)
{
return GetFileList(formatUrl( ftpRoot , path), WebRequestMethods.Ftp.ListDirectory);
}
/// <summary>
/// 从ftp服务器上获得文件列表
/// </summary>
/// <returns></returns>
public string[] GetFileList()
{
return GetFileList(ftpRoot, WebRequestMethods.Ftp.ListDirectory);
}
/// <summary>
/// 从ftp服务器下载文件
/// </summary>
/// <param name="srcFilePath"></param>
/// <param name="srcFilePath"></param>
/// <param name="errorinfo"></param>
/// <param name="saveName"></param>
/// <returns></returns>
public bool Download(string srcFilePath, string desFilePath,ref string errorinfo)
{
try
{
//if (File.Exists(desFilePath))
//{
// errorinfo = string.Format("本地文件{0}已存在,无法下载", desFilePath);
// Sxmobi.LogHelper.Error(this.GetType().ToString(), errorinfo, null);
//}
string url = formatUrl(ftpRoot ,srcFilePath);
Connect(url);//连接
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
long cl = response.ContentLength;
int bufferSize = 2048;
int readCount;
byte[] buffer = new byte[bufferSize];
readCount = ftpStream.Read(buffer, 0, bufferSize);
Sxmobi.FileHelper.EnsureDir(Path.GetDirectoryName(desFilePath));
FileStream outputStream = new FileStream(desFilePath, FileMode.Create);
while (readCount > 0)
{
outputStream.Write(buffer, 0, readCount);
readCount = ftpStream.Read(buffer, 0, bufferSize);
}
ftpStream.Close();
outputStream.Close();
response.Close();
errorinfo = "";
return true;
}
catch (Exception ex)
{
errorinfo = string.Format("因{0},无法下载", ex.Message);
Sxmobi.LogHelper.Error(this.GetType().ToString(), errorinfo, ex);
return false;
}
}
/// <summary>
/// 上传文件
/// </summary>
/// <param name="dFile">目标文件(不带FTP根目录)</param>
/// <param name="sFile">源文件</param>
public void upLoad(string destFile, string srcFile)
{
upLoad(destFile, srcFile, false);
}
/// <summary>
/// 上传文件
/// </summary>
/// <param name="dFile">目标文件(不带FTP根目录)</param>
/// <param name="sFile">源文件</param>
/// <param name="delSrcFile">上传完毕后是否删除源文件</param>
public void upLoad(string destFile, string srcFile, bool delSrcFile)
{
try
{
string url = formatUrl(ftpRoot, destFile);
// Create a Uri instance with the specified URI string.
// If the URI is not correctly formed, the Uri constructor
// will throw an exception.
ManualResetEvent waitObject;
Uri target = new Uri(url);
string fileName = srcFile;
FtpState state = new FtpState();
//创建文件夹
createFtpDir(url);
//上传文件
Connect(url);
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
state.Request = reqFTP;
state.FileName = fileName;
// Get the event to wait on.
waitObject = state.OperationComplete;
reqFTP.BeginGetRequestStream(
new AsyncCallback(EndGetStreamCallback),
state
);
waitObject.WaitOne();
if(delSrcFile)
File.Delete(state.FileName);
if (state.OperationException != null)
{
throw state.OperationException;
}
}
catch (Exception ex)
{
Sxmobi.LogHelper.Error("upLoad", ex.Message, ex);
}
}
/// <summary>
/// 递归创建文件夹
/// </summary>
/// <param name="path"></param>
void createFtpDir(string path)
{
if (path.Length <= ftpRoot.Length) return;
int pos = path.LastIndexOf("/");
path = path.Substring(0, pos);
string[] dirs = GetFileList(Path.GetDirectoryName(path));
if (dirs == null || dirs.Length == 0)
{
createFtpDir(path);
try
{
Connect(path);//连接
reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;
reqFTP.UseBinary = true;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
ftpStream.Close();
response.Close();
}
catch { }
}
return;
}
private void EndGetStreamCallback(IAsyncResult ar)
{
FtpState state = (FtpState)ar.AsyncState;
Stream requestStream = null;
// End the asynchronous call to get the request stream.
try
{
requestStream = state.Request.EndGetRequestStream(ar);
// Copy the file contents to the request stream.
const int bufferLength = 2048;
byte[] buffer = new byte[bufferLength];
int count = 0;
int readBytes = 0;
FileStream stream = File.OpenRead(state.FileName);
do
{
readBytes = stream.Read(buffer, 0, bufferLength);
requestStream.Write(buffer, 0, readBytes);
count += readBytes;
}
while (readBytes != 0);
stream.Close();
stream.Dispose();
// Console.WriteLine("Writing {0} bytes to the stream.", count);
// IMPORTANT: Close the request stream before sending the request.
requestStream.Close();
// Asynchronously get the response to the upload request.
state.Request.BeginGetResponse(
new AsyncCallback(EndGetResponseCallback),
state
);
}
// Return exceptions to the main application thread.
catch (Exception e)
{
// Console.WriteLine("Could not get the request stream.");
Sxmobi.LogHelper.Error("EndGetStreamCallback", "Could not get the request stream.", e);
state.OperationException = e;
state.OperationComplete.Set();
return;
}
}
// The EndGetResponseCallback method
// completes a call to BeginGetResponse.
private void EndGetResponseCallback(IAsyncResult ar)
{
FtpState state = (FtpState)ar.AsyncState;
FtpWebResponse response = null;
try
{
response = (FtpWebResponse)state.Request.EndGetResponse(ar);
response.Close();
state.StatusDescription = response.StatusDescription;
// Signal the main application thread that
// the operation is complete.
state.OperationComplete.Set();
}
// Return exceptions to the main application thread.
catch (Exception e)
{
Sxmobi.LogHelper.Error("EndGetResponseCallback", "Error getting response.", e);
state.OperationException = e;
state.OperationComplete.Set();
}
}
/// <summary>
/// 地址加入前缀
/// </summary>
/// <param name="host">服务器前缀（如："ftp://www.xxx.com"、"http://www.xxx.com/a.htm"）</param>
/// <param name="src"></param>
/// <returns></returns>
public static string formatUrl(string host, string src)
{
int l = host.LastIndexOf("/");
if (l > 10)
host = host.Substring(0, l);
src = src.Replace("\\", "/");
if (src.ToLower().IndexOf("http") < 0 && src.ToLower().IndexOf("ftp") < 0)//拼凑地址
{
if (!src.StartsWith("/")) src = "/" + src;
src = host + src;
}
return src;
}
}