对FTP的操作代码,CSharp代码库,德仔网

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代码分类
【CSharp】对FTP的操作
作者:dezai / 发布于2014/1/7/ 813
C#对FTP的操作（上传，下载，重命名文件，删除文件，文件存在检查）
usingSystem;
usingSystem.Collections.Generic;
usingSystem.Text;
usingSystem.Net;
usingSystem.Data;
usingSystem.IO;
usingSystem.ComponentModel;
namespaceCommon
{
publicclassFTPClient
{
privatestringftpServerIP=String.Empty;
privatestringftpUser=String.Empty;
privatestringftpPassword=String.Empty;
privatestringftpRootURL=String.Empty;
publicFTPClient(stringurl,stringuserid,stringpassword)
{
this.ftpServerIP=ftp的IP地址;
this.ftpUser=用户名;
this.ftpPassword=密码;
this.ftpRootURL="ftp://"+url+"/";
}
///<summary>
///上传
///</summary>
///<paramname="localFile">本地文件绝对路径</param>
///<paramname="ftpPath">上传到ftp的路径</param>
///<paramname="ftpFileName">上传到ftp的文件名</param>
publicboolfileUpload(FileInfolocalFile,stringftpPath,stringftpFileName)
{
boolsuccess=false;
FtpWebRequestftpWebRequest=null;
FileStreamlocalFileStream=null;
StreamrequestStream=null;
try
{
stringuri=ftpRootURL+ftpPath+ftpFileName;
ftpWebRequest=(FtpWebRequest)FtpWebRequest.Create(newUri(uri));
ftpWebRequest.Credentials=newNetworkCredential(ftpUser,ftpPassword);
ftpWebRequest.UseBinary=true;
ftpWebRequest.KeepAlive=false;
ftpWebRequest.Method=WebRequestMethods.Ftp.UploadFile;
ftpWebRequest.ContentLength=localFile.Length;
intbuffLength=2048;
byte[]buff=newbyte[buffLength];
intcontentLen;
localFileStream=localFile.OpenRead();
requestStream=ftpWebRequest.GetRequestStream();
contentLen=localFileStream.Read(buff,0,buffLength);
while(contentLen!=0)
{
requestStream.Write(buff,0,contentLen);
contentLen=localFileStream.Read(buff,0,buffLength);
}
success=true;
}
catch(Exception)
{
success=false;
}
finally
{
if(requestStream!=null)
{
requestStream.Close();
}
if(localFileStream!=null)
{
localFileStream.Close();
}
}
returnsuccess;
}
///<summary>
///上传文件
///</summary>
///<paramname="localPath">本地文件地址(没有文件名)</param>
///<paramname="localFileName">本地文件名</param>
///<paramname="ftpPath">上传到ftp的路径</param>
///<paramname="ftpFileName">上传到ftp的文件名</param>
publicboolfileUpload(stringlocalPath,stringlocalFileName,stringftpPath,stringftpFileName)
{
boolsuccess=false;
try
{
FileInfolocalFile=newFileInfo(localPath+localFileName);
if(localFile.Exists)
{
success=fileUpload(localFile,ftpPath,ftpFileName);
}
else
{
success=false;
}
}
catch(Exception)
{
success=false;
}
returnsuccess;
}
///<summary>
///下载文件
///</summary>
///<paramname="localPath">本地文件地址(没有文件名)</param>
///<paramname="localFileName">本地文件名</param>
///<paramname="ftpPath">下载的ftp的路径</param>
///<paramname="ftpFileName">下载的ftp的文件名</param>
publicboolfileDownload(stringlocalPath,stringlocalFileName,stringftpPath,stringftpFileName)
{
boolsuccess=false;
FtpWebRequestftpWebRequest=null;
FtpWebResponseftpWebResponse=null;
StreamftpResponseStream=null;
FileStreamoutputStream=null;
try
{
outputStream=newFileStream(localPath+localFileName,FileMode.Create);
stringuri=ftpRootURL+ftpPath+ftpFileName;
ftpWebRequest=(FtpWebRequest)FtpWebRequest.Create(newUri(uri));
ftpWebRequest.Credentials=newNetworkCredential(ftpUser,ftpPassword);
ftpWebRequest.UseBinary=true;
ftpWebRequest.Method=WebRequestMethods.Ftp.DownloadFile;
ftpWebResponse=(FtpWebResponse)ftpWebRequest.GetResponse();
ftpResponseStream=ftpWebResponse.GetResponseStream();
longcontentLength=ftpWebResponse.ContentLength;
intbufferSize=2048;
byte[]buffer=newbyte[bufferSize];
intreadCount;
readCount=ftpResponseStream.Read(buffer,0,bufferSize);
while(readCount>0)
{
outputStream.Write(buffer,0,readCount);
readCount=ftpResponseStream.Read(buffer,0,bufferSize);
}
success=true;
}
catch(Exception)
{
success=false;
}
finally
{
if(outputStream!=null)
{
outputStream.Close();
}
if(ftpResponseStream!=null)
{
ftpResponseStream.Close();
}
if(ftpWebResponse!=null)
{
ftpWebResponse.Close();
}
}
returnsuccess;
}
///<summary>
///重命名
///</summary>
///<paramname="ftpPath">ftp文件路径</param>
///<paramname="currentFilename"></param>
///<paramname="newFilename"></param>
publicboolfileRename(stringftpPath,stringcurrentFileName,stringnewFileName)
{
boolsuccess=false;
FtpWebRequestftpWebRequest=null;
FtpWebResponseftpWebResponse=null;
StreamftpResponseStream=null;
try
{
stringuri=ftpRootURL+ftpPath+currentFileName;
ftpWebRequest=(FtpWebRequest)FtpWebRequest.Create(newUri(uri));
ftpWebRequest.Credentials=newNetworkCredential(ftpUser,ftpPassword);
ftpWebRequest.UseBinary=true;
ftpWebRequest.Method=WebRequestMethods.Ftp.Rename;
ftpWebRequest.RenameTo=newFileName;

ftpWebResponse=(FtpWebResponse)ftpWebRequest.GetResponse();
ftpResponseStream=ftpWebResponse.GetResponseStream();

}
catch(Exception)
{
success=false;
}
finally
{
if(ftpResponseStream!=null)
{
ftpResponseStream.Close();
}
if(ftpWebResponse!=null)
{
ftpWebResponse.Close();
}
}
returnsuccess;
}
///<summary>
///消除文件
///</summary>
///<paramname="filePath"></param>
publicboolfileDelete(stringftpPath,stringftpName)
{
boolsuccess=false;
FtpWebRequestftpWebRequest=null;
FtpWebResponseftpWebResponse=null;
StreamftpResponseStream=null;
StreamReaderstreamReader=null;
try
{
stringuri=ftpRootURL+ftpPath+ftpName;
ftpWebRequest=(FtpWebRequest)FtpWebRequest.Create(newUri(uri));
ftpWebRequest.Credentials=newNetworkCredential(ftpUser,ftpPassword);
ftpWebRequest.KeepAlive=false;
ftpWebRequest.Method=WebRequestMethods.Ftp.DeleteFile;
ftpWebResponse=(FtpWebResponse)ftpWebRequest.GetResponse();
longsize=ftpWebResponse.ContentLength;
ftpResponseStream=ftpWebResponse.GetResponseStream();
streamReader=newStreamReader(ftpResponseStream);
stringresult=String.Empty;
result=streamReader.ReadToEnd();

success=true;
}
catch(Exception)
{
success=false;
}
finally
{
if(streamReader!=null)
{
streamReader.Close();
}
if(ftpResponseStream!=null)
{
ftpResponseStream.Close();
}
if(ftpWebResponse!=null)
{
ftpWebResponse.Close();
}
}
returnsuccess;
}
///<summary>
///文件存在检查
///</summary>
///<paramname="ftpPath"></param>
///<paramname="ftpName"></param>
///<returns></returns>
publicboolfileCheckExist(stringftpPath,stringftpName)
{
boolsuccess=false;
FtpWebRequestftpWebRequest=null;
WebResponsewebResponse=null;
StreamReaderreader=null;
try
{
stringurl=ftpRootURL+ftpPath;

ftpWebRequest=(FtpWebRequest)FtpWebRequest.Create(newUri(url));
ftpWebRequest.Credentials=newNetworkCredential(ftpUser,ftpPassword);
ftpWebRequest.Method=WebRequestMethods.Ftp.ListDirectory;
ftpWebRequest.KeepAlive=false;
webResponse=ftpWebRequest.GetResponse();
reader=newStreamReader(webResponse.GetResponseStream());
stringline=reader.ReadLine();
while(line!=null)
{
if(line==ftpName)
{
success=true;
break;
}
line=reader.ReadLine();
}
}
catch(Exception)
{
success=false;
}
finally
{
if(reader!=null)
{
reader.Close();
}
if(webResponse!=null)
{
webResponse.Close();
}
}
returnsuccess;
}
}
}
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