ASP.net操作FTP(下)
FtpClass.cs:using System;
using System.Configuration;
using System.IO;
using FtpSupport;
using Microsoft.Win32;
using System.Web;
namespace FtpTest
{
public class FtpClass
{
private string FtpIP=ConfigurationSettings.AppSettings["FtpIP"];
private string FtpUserName=ConfigurationSettings.AppSettings["FtpUserName"];
private string FtpPassord=ConfigurationSettings.AppSettings["FtpPassWord"];
private FtpConnection ftp;
private FtpConnection FtpConn()
{
ftp=new FtpConnection();
ftp.Connect(this.FtpIP,this.FtpUserName,this.FtpPassord);
return ftp;
}
private string GetFileExtName(string filename,bool withdot)
{
string [] arrs=filename.Split('.');
int i=arrs.Length;
return withdot?"."+arrs.ToString():arrs.ToString();
}
private string GetFileContentType(string filedownloadname)
{
string DEFAULT_CONTENT_TYPE = "application/unknown";
RegistryKey regkey,fileextkey;
string FileContentType;
try
{
regkey=Registry.ClassesRoot;
fileextkey=regkey.OpenSubKey(this.GetFileExtName(filedownloadname,false));
FileContentType=fileextkey.GetValue("Content Type",DEFAULT_CONTENT_TYPE).ToString();
}
catch
{
FileContentType=DEFAULT_CONTENT_TYPE;
}
return FileContentType;
}
public string FtpUpload(HttpPostedFile file,string dir)
{
string FileDownloadName=DateTime.Now.ToString("yyyyMMddhhmmss")+this.GetFileExtName(file.FileName,true);
FtpConnection ftp=this.FtpConn();
if(ftp.DirectoryExist(dir))
ftp.SetCurrentDirectory(dir);
else
{
ftp.CreateDirectory(dir);
ftp.SetCurrentDirectory(dir);
}
ftp.PutStream(file.InputStream,FileDownloadName);
ftp.Close();
return FileDownloadName;
}
public void FileDel(string filedownloadname,string dir)
{
FtpConnection ftp=this.FtpConn();
if(ftp.DirectoryExist(dir))
{
ftp.SetCurrentDirectory(dir);
if(ftp.FileExist(filedownloadname))
{
ftp.DeleteFile(filedownloadname);
}
}
ftp.Close();
}
public void FtpDownload(HttpContext context,string filedownloadname,string dir)
{
context.Response.Clear();
context.Response.AddHeader("Content-Disposition", "attachment; filename="+filedownloadname);
context.Response.ContentType=this.GetFileContentType(filedownloadname);
FtpConnection ftp=this.FtpConn();
ftp.SetCurrentDirectory(dir);
if(ftp.FileExist(filedownloadname))
{
FtpStream ftpfs=ftp.OpenFile(filedownloadname,GenericRights.Read);
byte [] buffer=new byte;
int n=ftpfs.Read(buffer,0,buffer.Length);
while(n>0)
{
context.Response.BinaryWrite(buffer);
n=ftpfs.Read(buffer,0,buffer.Length);
}
Response.End();
ftpfs.Close();
}
else
{
context.Response.Write("alert('file does not exist!');");
}
ftp.Close();
}
}
}
这个dll在获取ftp文件列表方便存在些问题，等我修改下会放出一个改进版本，所以暂时用数据库保存ftp文件列表先将就下：
数据库：
if exists (select * from dbo.sysobjects where id = object_id(N'.') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table .
GO
CREATE TABLE . (
(50) COLLATE Chinese_PRC_CI_AS NOT NULL ,
(50) COLLATE Chinese_PRC_CI_AS NULL ,
(50) COLLATE Chinese_PRC_CI_AS NULL ,
(50) COLLATE Chinese_PRC_CI_AS NULL ,
NULL ,
NULL
) ON
GO
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