热烈祝贺台州维博网络的站长论坛隆重上线!(2012-05-28)    热烈庆祝伟大的祖国60周年生日 点击进来我们一起为她祝福吧(2009-09-26)    站长论坛禁止发布广告,一经发现立即删除。谢谢各位合作!.(2009-08-08)    热烈祝贺台州网址导航全面升级,全新版本上线!希望各位一如既往地支持台州网址导航的发展.(2009-03-28)    台州站长论坛恭祝各位新年快乐,牛年行大运!(2009-01-24)    台州Link正式更名为台州网址导航,专业做以台州网址为主的网址导航!(2008-05-23)    热烈祝贺台州Link资讯改名为中国站长资讯!希望在以后日子里得到大家的大力支持和帮助!(2008-04-10)    热烈祝贺台州Link论坛改名为台州站长论坛!希望大家继续支持和鼓励!(2008-04-10)    台州站长论坛原[社会琐碎]版块更名为[生活百科]版块!(2007-09-05)    特此通知:新台州站长论坛的数据信息全部升级成功!">特此通知:新台州站长论坛的数据信息全部升级成功!(2007-09-01)    台州站长论坛对未通过验证的会员进行合理的清除,请您谅解(2007-08-30)    台州网址导航|上网导航诚邀世界各地的网站友情链接和友谊联盟,共同引领网站导航、前进!(2007-08-30)    禁止发广告之类的帖,已发现立即删除!(2007-08-30)    希望各位上传与下载有用资源和最新信息(2007-08-30)    热烈祝贺台州站长论坛全面升级成功,全新上线!(2007-08-30)    
便民网址导航,轻松网上冲浪。
台州维博网络专业开发网站门户平台系统
您当前的位置: 首页 » ASP/ASP.NET编程 » .NET Framework 2.0对FTP操作(上传,下载,新建,删除,FTP间传送文件等)实现汇

.NET Framework 2.0对FTP操作(上传,下载,新建,删除,FTP间传送文件等)实现汇

论坛链接
  • .NET Framework 2.0对FTP操作(上传,下载,新建,删除,FTP间传送文件等)实现汇总1
  • 发布时间:2011-03-06 21:39:42    浏览数:5993    发布者:lbsong    设置字体【   
最近项目需要对FTP服务器进行操作,现把实现总结如下:

打算分2篇总结:

第1篇总结Ftp的一些常规的操作实现(例如:上传,下载,新建,删除,FTP间互传文件等操作)

第2篇总结Ftp的操作的一些其他实现(例如:异步上传,异步下载等其他操作)

Microsoft .NET Framework 2.0新增加了3个类使我们很方便的对文件传输协议(FTP)服务器进行操作

FtpWebRequest类:实现文件传输协议(FTP)客户端

public sealed class FtpWebRequest : WebRequest

FtpWebResponse类:封装文件传输协议(FTP)服务器对请求的响应

public class FtpWebResponse : WebResponse, IDisposable

WebRequestMethods.Ftp类:表示可与FTP请求一起使用的FTP协议方法的类型,无法继承此类

public static class Ftp

类关系图





操作ftp的一般步骤我总结如下:

第一步:WebRequest.Create方法,获得FtpWebRequest的实例

第二步:利用WebRequestMethods.Ftp设置FtpWebRequest的Method属性,指定使用的FTP协议方法的类型

第三步:设置FtpWebRequest的Credentials属性,指定用户名和密码

第四步:发出请求

第五步:接收响应数据流(有些ftp操作可能没这一步,例如给文件夹改名)

第六步:关闭流



下面从几段代码来分别展示ftp的不同操作:

1.文件夹和文件信息

关键知识说明:

a.FtpWebRequest类没有公开的构造函数,我们通过WebRequest.Create方法,获得FtpWebRequest的实例

b.通过WebRequestMethods.Ftp.ListDirectoryDetails(详细列表)或者WebRequestMethods.Ftp.ListDirectory(简短列表)获取FTP服务器上的文件列表

c.请求返回的数据在GetResponseStream方法返回的流中

d.字符编码请用System.Text.Encoding.Default,要不中文名会乱码

e.FtpWebRequest.Credentials属性设置登陆用户名和密码

f.FtpWebRequest.UseBinary属性,true,指示服务器要传输的是二进制数据.false,指示数据为文本。默认值为true

g.FtpWebRequest.EnableSsl属性,如果控制和数据传输是加密的,则为true.否则为false.默认值为 false

实例代码:

获取ftp://218.16.229.120上的文件信息

Uri uri = new Uri ( "ftp://218.16.229.120" );

FtpWebRequest listRequest = ( FtpWebRequest ) WebRequest.Create ( uri );

listRequest.Method = WebRequestMethods.Ftp.ListDirectoryDetails;

//listRequest.Method = WebRequestMethods.Ftp.ListDirectory;

string ftpUser = "";

string ftpPassWord = "";

listRequest.Credentials = new NetworkCredential ( ftpUser , ftpPassWord );

FtpWebResponse listResponse = ( FtpWebResponse ) listRequest.GetResponse ( );

Stream responseStream = listResponse.GetResponseStream ( );

StreamReader readStream = new StreamReader ( responseStream , System.Text.Encoding.Default );

if ( readStream != null )

{

MessageBox.Show ( readStream.ReadToEnd ( ) );

}

MessageBox.Show ( string.Format ( "状态: {0},{1}" ,listResponse.StatusCode, listResponse.StatusDescription ) );

listResponse.Close ( );

responseStream.Close ( );

readStream.Close ( );

通过WebRequestMethods.Ftp.ListDirectoryDetails(详细列表)或者WebRequestMethods.Ftp.ListDirectory(简短列表)返回的结果是不一样的.请看图





利用WebRequestMethods.Ftp.ListDirectoryDetails,readStream.ReadToEnd ( )返回的字符串比较复杂(不同类型的Ftp会有不同返回形式的返回结果),要把里面的文件夹和文件区分列出来比较繁琐,代码比较多,所以我没写出来,感兴趣的朋友可以留言,我可以邮件发送.



2.取ftp登陆身份验证完成后的欢迎信息

关键知识说明:

a.FtpWebResponse.WelcomeMessage属性获取身份验证完成时FTP服务器发送的消息

实例代码:

获取ftp://218.16.229.120登陆身份验证完成后的欢迎信息

Uri uri = new Uri ( "ftp://218.16.229.120" );

FtpWebRequest listRequest = ( FtpWebRequest ) WebRequest.Create ( uri );

listRequest.Method = WebRequestMethods.Ftp.ListDirectoryDetails;

string ftpUser = "";

string ftpPassWord = "";

listRequest.Credentials = new NetworkCredential ( ftpUser , ftpPassWord );

FtpWebResponse listResponse = ( FtpWebResponse ) listRequest.GetResponse ( );

MessageBox.Show ( listResponse.WelcomeMessage );

附加说明:要是FTP服务器的欢迎信息带有中文,运行这段代码时可能会发生异常(基础连接已经关闭: 服务器提交了协议).

解决办法:打补丁Microsoft .NET Framework 2.0 Service Pack 1



3.重命名目录

关键知识说明:

a.WebRequestMethods.Ftp.Rename表示重命名目录的FTP协议方法

b.FtpWebRequest.RenameTo属性重命名的新名称

实例代码:

ftp://218.16.229.120/上的a目录重命名为av

Uri uri = new Uri ( "ftp://218.16.229.120/a" );

FtpWebRequest listRequest = ( FtpWebRequest ) WebRequest.Create ( uri );

listRequest.Method = WebRequestMethods.Ftp.Rename;

string ftpUser = "";

string ftpPassWord = "";

listRequest.Credentials = new NetworkCredential ( ftpUser , ftpPassWord );

listRequest.RenameTo = "av";

FtpWebResponse listResponse = ( FtpWebResponse ) listRequest.GetResponse ( );

MessageBox.Show ( listResponse.StatusDescription );



4.删除目录

关键知识说明:

a.WebRequestMethods.Ftp.RemoveDirectory表示移除目录的FTP协议方法

实例代码:

删除ftp://218.16.229.120上的av文件夹

Uri uri = new Uri ( "ftp://218.16.229.120/av" );

FtpWebRequest listRequest = ( FtpWebRequest ) WebRequest.Create ( uri );

listRequest.Method = WebRequestMethods.Ftp.RemoveDirectory;

string ftpUser = "";

string ftpPassWord = "";

listRequest.Credentials = new NetworkCredential ( ftpUser , ftpPassWord );

FtpWebResponse listResponse = ( FtpWebResponse ) listRequest.GetResponse ( );

MessageBox.Show ( listResponse.StatusDescription );



5.新建目录

关键知识说明:

a.WebRequestMethods.Ftp.MakeDirectory表示在FTP服务器上创建目录的协议方法

实例代码:

ftp://218.16.229.120上建立目录vb

Uri uri = new Uri ( "ftp://218.16.229.120/vb" );

FtpWebRequest listRequest = ( FtpWebRequest ) WebRequest.Create ( uri );

listRequest.Method = WebRequestMethods.Ftp.MakeDirectory;

string ftpUser = "";

string ftpPassWord = "";

listRequest.Credentials = new NetworkCredential ( ftpUser , ftpPassWord );

FtpWebResponse listResponse = ( FtpWebResponse ) listRequest.GetResponse ( );

MessageBox.Show ( listResponse.StatusDescription );



6.得文件大小

关键知识说明:

a.WebRequestMethods.Ftp.GetFileSize表示要用于检索FTP服务器上的文件大小

b.流数据的长度可以从FtpWebResponse.ContentLength属性中获取。

实例代码:

获取ftp://218.16.229.120上的会议记录.doc文件大小

Uri uri = new Uri ( "ftp://218.16.229.120/会议记录.doc" );

FtpWebRequest listRequest = ( FtpWebRequest ) WebRequest.Create ( uri );

listRequest.Method = WebRequestMethods.Ftp.GetFileSize;

string ftpUser = "";

string ftpPassWord = "";

listRequest.Credentials = new NetworkCredential ( ftpUser , ftpPassWord );

FtpWebResponse listResponse = ( FtpWebResponse ) listRequest.GetResponse ( );

MessageBox.Show ( string.Format ( "文件大小: {0}" , listResponse.ContentLength ) );



7.删除文件

关键知识说明:

a.WebRequestMethods.Ftp.DeleteFile表示要用于删除FTP服务器上的文件

实例代码:

删除ftp://218.16.229.120上的工作安排.txt文件

Uri uri = new Uri ( "ftp://218.16.229.120/工作安排.txt" );

FtpWebRequest listRequest = ( FtpWebRequest ) WebRequest.Create ( uri );

listRequest.Method = WebRequestMethods.Ftp.DeleteFile;

string ftpUser = "";

string ftpPassWord = "";

listRequest.Credentials = new NetworkCredential ( ftpUser , ftpPassWord );

FtpWebResponse listResponse = ( FtpWebResponse ) listRequest.GetResponse ( );

MessageBox.Show ( string.Format ( "Delete status: {0}" , listResponse.StatusDescription ) );



8.上传文件

关键知识说明:

a.WebRequestMethods.Ftp.UploadFile表示将文件上载到FTP服务器

b.使用FtpWebRequest对象向服务器上载文件,则必须将文件内容写入请求流,请求流是通过调用FtpWebRequest.GetRequestStream方法.如果未将属性设置为UploadFile,则不能获取流。

c.异步对应方法(FtpWebRequest.BeginGetRequestStream方法和FtpWebRequest.EndGetRequestStream 方法),关于异步上传的实现我会再写在下篇总汇中

实例代码:

上载文件D:\abc.txt到ftp://218.16.229.120

Stream requestStream = null;

FileStream fileStream = null;

FtpWebResponse uploadResponse = null;

try

{

Uri uri = new Uri ( "ftp://218.16.229.120/abc.txt" );

FtpWebRequest uploadRequest = ( FtpWebRequest ) WebRequest.Create ( uri );

uploadRequest.Method = WebRequestMethods.Ftp.UploadFile;

string ftpUser = "";

string ftpPassWord = "";

uploadRequest.Credentials = new NetworkCredential ( ftpUser , ftpPassWord );

requestStream = uploadRequest.GetRequestStream ( );

fileStream = File.Open ( @"D:\abc.txt" , FileMode.Open );

byte [ ] buffer = new byte [ 1024 ];

int bytesRead;

while ( true )

{

bytesRead = fileStream.Read ( buffer , 0 , buffer.Length );

if ( bytesRead == 0 )

break;

requestStream.Write ( buffer , 0 , bytesRead );

}

requestStream.Close ( );

uploadResponse = ( FtpWebResponse ) uploadRequest.GetResponse ( );

MessageBox.Show ( "Upload complete." );

}

finally

{

if ( uploadResponse != null )

uploadResponse.Close ( );

if ( fileStream != null )

fileStream.Close ( );

if ( requestStream != null )

requestStream.Close ( );

}

其实利用WebClient.UploadData方法,还有一种更简单的上传方法:

WebClient request = new WebClient ( );

string ftpUser = "";

string ftpPassWord = "";

request.Credentials = new NetworkCredential ( ftpUser , ftpPassWord );

FileStream myStream = new FileStream ( @"D:\abcd.txt" , FileMode.Open , FileAccess.Read );

byte [ ] dataByte = new byte [ myStream.Length ];

myStream.Read ( dataByte , 0 , dataByte.Length ); //写到2进制数组中

myStream.Close ( );

request.UploadData ( "ftp://218.16.229.120/abcd.txt" , dataByte );



9.下载文件

关键知识说明:

a.WebRequestMethods.Ftp.DownloadFile表示要用于从FTP服务器下载文件

b.从FTP服务器下载文件时,如果命令成功,所请求的文件的内容即在响应对象的流中。通过调用FtpWebResponse.GetResponseStream方法,可以访问此流。

实例代码:

ftp://218.16.229.120上下载文件保存到d:\abc.txt

Stream responseStream = null;

FileStream fileStream = null;

StreamReader reader = null;

try

{

string downloadUrl = "ftp://218.16.229.120/abc.txt";

FtpWebRequest downloadRequest = ( FtpWebRequest ) WebRequest.Create ( downloadUrl );

downloadRequest.Method = WebRequestMethods.Ftp.DownloadFile;

string ftpUser = "";

string ftpPassWord = "";

downloadRequest.Credentials = new NetworkCredential ( ftpUser , ftpPassWord );

FtpWebResponse downloadResponse = ( FtpWebResponse ) downloadRequest.GetResponse ( );

responseStream = downloadResponse.GetResponseStream ( );

fileStream = File.Create ( @"d:\" + "abc.txt" );

byte [ ] buffer = new byte [ 1024 ];

int bytesRead;

while ( true )

{

bytesRead = responseStream.Read ( buffer , 0 , buffer.Length );

if ( bytesRead == 0 )

break;

fileStream.Write ( buffer , 0 , bytesRead );

}



MessageBox.Show ( "Download complete" );

}

finally

{

if ( reader != null )

{

reader.Close ( );

}

else

{

if ( responseStream != null )

{

responseStream.Close ( );

}

if ( fileStream != null )

{

fileStream.Close ( );

}

}

}

其实利用WebClient.DownloadData方法,还有一种更简单的下载方法:

Uri uri = new Uri ( "ftp://218.16.229.120/abc.txt" );

WebClient request = new WebClient ( );

string ftpUser = "";

string ftpPassWord = "";

request.Credentials = new NetworkCredential ( ftpUser , ftpPassWord );

byte [ ] newFileData = request.DownloadData ( uri.ToString ( ) );

FileStream fs = new FileStream ( @"d:\abc.txt" , FileMode.OpenOrCreate , FileAccess.Write );

fs.Write ( newFileData , 0 , newFileData.Length );

fs.Close ( );



10.2个ftp间传送文件

关键知识说明:

a.在搞懂前面所说下载和上传知识后,其实很好实现2个ftp间传送文件.我们可以把传送文件看成是先下载后上传.把下载的文件响应流数据写到上传文件请求流中即可.

实例代码:

ftp://218.58.58.19中"集团公司通知"目录中的"080124-成本费用科目调整通知.pdf"文件传送到ftp://218.16.229.120

string downloadUrl = "ftp://218.58.58.19/集团公司通知/080124-成本费用科目调整通知.pdf";

FtpWebRequest downloadRequest = ( FtpWebRequest ) WebRequest.Create ( downloadUrl );

downloadRequest.Method = WebRequestMethods.Ftp.DownloadFile;

string ftpUser = "download";

string ftpPassWord = "download";

downloadRequest.Credentials = new NetworkCredential ( ftpUser , ftpPassWord );

string uploadUrl = "ftp://218.16.229.120/080124-成本费用科目调整通知.pdf";

FtpWebRequest uploadRequest = ( FtpWebRequest ) WebRequest.Create ( uploadUrl );

uploadRequest.Method = WebRequestMethods.Ftp.UploadFile;

string ftpUser1 = "exwangsoft";

string ftpPassWord1 = "exwangsoft";

uploadRequest.Credentials = new NetworkCredential ( ftpUser1 , ftpPassWord1 );

FtpWebResponse downloadResponse = ( FtpWebResponse ) downloadRequest.GetResponse ( );

Stream responseStream = downloadResponse.GetResponseStream ( );

Stream fileStream = uploadRequest.GetRequestStream ( );

byte [ ] buffer = new byte [ 1024 ];

int bytesRead;

while ( true )

{

//读取ftp://218.58.58.19的响应流数据

bytesRead = responseStream.Read ( buffer , 0 , buffer.Length );

if ( bytesRead == 0 )

break;

//写到ftp://218.16.229.120的请求流数据中

fileStream.Write ( buffer , 0 , bytesRead );

}

fileStream.Close ( );

FtpWebResponse uploadResponse = null;

uploadResponse = ( FtpWebResponse ) uploadRequest.GetResponse ( );

MessageBox.Show ( "complete" );
娱乐休闲专区A 影视预告B 音乐咖啡C 英语阶梯D 生活百科
网页编程专区E AMPZF HTMLG CSSH JSI ASPJ PHPK JSPL MySQLM AJAX
Linux技术区 N 系统管理O 服务器架设P 网络/硬件Q 编程序开发R 内核/嵌入
管理中心专区S 发布网址T 版主议事U 事务处理