01—FTP概述
文件传输协议（File Transfer Protocol，FTP）是用于在网络上进行文件传输的一套标准协议，作为一套古老的网络工具，在工业界有着及其广泛的应用.本节主要给大家演示ftp对文件的上传、下载、以及删除。如果还没有ftp服务地址，请参考上节【使用filezilla server搭建ftp服务器】搭建下服务器。
02—效果演示
03—代码
先定义配置模型：FTPConfig
代码语言：javascript复制 public class FTPConfig
{
/// <summary>
///
/// </summary>
public FTPConfig()
{
IsUpload = false;
FtpServerIP = "127.0.0.1";
FtpRemotePath = "";
FtpUserID = "ftpTest";
FtpPassword = "a123456.";
}
/// <summary>
/// 是否上传
/// </summary>
public bool IsUpload { get; set; }
/// <summary>
/// FTP的IP地址
/// </summary>
public string FtpServerIP { get; set; }
/// <summary>
/// 上传FTP目录
/// </summary>
public string FtpRemotePath { get; set; }
/// <summary>
/// 用户名
/// </summary>
public string FtpUserID { get; set; }
/// <summary>
/// 密码
/// </summary>
public string FtpPassword { get; set; }
}FTP上传、下载、删除方法:
代码语言：javascript复制 /// <summary>
/// 上传
/// </summary>
/// <param name="filename"></param>
public void Upload(string filename)
{
if (ftpConfig.IsUpload)
{
FileInfo fileInfo = new FileInfo(filename);
string uri = ftpURI fileInfo.Name;
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
reqFTP.Credentials = new NetworkCredential(ftpConfig.FtpUserID, ftpConfig.FtpPassword);
reqFTP.KeepAlive = false;
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
reqFTP.UseBinary = true;
reqFTP.ContentLength = fileInfo.Length;
int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;
using (FileStream fs = fileInfo.OpenRead())
{
using (Stream strm = reqFTP.GetRequestStream())
{
try
{
contentLen = fs.Read(buff, 0, buffLength);
while (contentLen != 0)
{
strm.Write(buff, 0, contentLen);
contentLen = fs.Read(buff, 0, buffLength);
}
strm.Close();
fs.Close();
}
catch (Exception ex)
{
string errorMessage = "Upload Error --> " ex.Message;
//logger.Error(errorMessage);
throw;
}
}
}
}
else
{
//logger.Debug("[UploadData] uploadConfig.IsUpload is false,abort to loaddata");
}
}
/// <summary>
/// 下载
/// </summary>
/// <param name="filePath"></param>
/// <param name="fileName"></param>
public void Download(string filePath, string fileName)
{
FtpWebRequest reqFTP;
try
{
FileStream outputStream = new FileStream(filePath "\" fileName, FileMode.Create);
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI fileName));
reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpConfig.FtpUserID, ftpConfig.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);
while (readCount > 0)
{
outputStream.Write(buffer, 0, readCount);
readCount = ftpStream.Read(buffer, 0, bufferSize);
}
ftpStream.Close();
outputStream.Close();
response.Close();
}
catch (Exception ex)
{
string errorMessage = "Download Error --> " ex.Message;
//logger.Error(errorMessage);
throw;
}
}
/// <summary>
/// 删除文件
/// </summary>
/// <param name="fileName"></param>
public void Delete(string fileName)
{
try
{
string uri = ftpURI fileName;
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
reqFTP.Credentials = new NetworkCredential(ftpConfig.FtpUserID, ftpConfig.FtpPassword);
reqFTP.KeepAlive = false;
reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;
string result = String.Empty;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
long size = response.ContentLength;
Stream datastream = response.GetResponseStream();
StreamReader sr = new StreamReader(datastream);
result = sr.ReadToEnd();
sr.Close();
datastream.Close();
response.Close();
}
catch (Exception ex)
{
string errorMessage = "Delete Error --> " ex.Message " 文件名:" fileName;
//logger.Error(errorMessage);
throw;
}
}前台写了三个button，分别进行上传、下载、删除操作：
代码语言：javascript复制 <StackPanel>
<Button Name="Upload" Content="FTP 上传"/>
<Button Name="Download" Content="FTP 下载"/>
<Button Name="Delete" Content="FTP 删除"/>
</StackPanel>后台事件：
代码语言：javascript复制 public void Upload()
{
ftpConfig.IsUpload = true;
Upload(@"D:temp.png");
MessageBox.Show("上传完成!!!");
}
public void Download()
{
Download(@"D:", "temp.png");
MessageBox.Show("下载完成!!!");
}
public void Delete()
{
Delete("temp.png");
MessageBox.Show("删除完成!!!");
}
公共属性和类的初始化：
代码语言：javascript复制 private string ftpURI;
private FTPConfig ftpConfig { get; set; }
/// <summary>
/// 连接FTP
/// </summary>
/// <param name="ftpConfig"></param>
public FTPTestViewModel(FTPConfig ftpConfig)
{
this.ftpConfig = ftpConfig;
if (string.IsNullOrEmpty(this.ftpConfig.FtpRemotePath))
{
ftpURI = "ftp://" this.ftpConfig.FtpServerIP "/";
}
else
{
ftpURI = "ftp://" this.ftpConfig.FtpServerIP "/" this.ftpConfig.FtpRemotePath "/";
}
}此外本项目还封装了ftp进行删除文件夹、获取当前目录下明细(包含文件和文件夹)、/ 获取当前目录下文件列表(仅文件)、获取当前目录下所有的文件夹列表(仅文件夹)、判断当前目录下指定的子目录是否存在、判断当前目录下指定的文件是否存在、创建文件夹、获取指定文件大小、改名、 移动文件、切换当前目录、 删除订单目录等方法，这这里不再列举，需要学习的可以下载源码参考。
04—源码下载
链接：https://pan.baidu.com/s/1F7EIi7bOcQVKhlKFFv-uEA
