1、局域网文件下载:
1 public class RemoteDownload 2 { 3 public static void DownLoad(string addressUrl,string localName) 4 { 5 //下载文件 6 System.Net.WebClient myWebClient = new System.Net.WebClient(); 7 myWebClient.DownloadFile(@"/10.2.0.254/software/01279.lic.txt", "testdownload.txt"); 8 //下载end 9 } 10 }
2、通过web方式,从远程服务器端下载文件:
1 public class WebDownload 2 { 3 public static void DownLoad(string Url, string FileName) 4 { 5 bool Value = false; 6 WebResponse response = null; 7 Stream stream = null; 8 9 try 10 { 11 HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url); 12 13 response = request.GetResponse(); 14 stream = response.GetResponseStream(); 15 16 if (!response.ContentType.ToLower().StartsWith("text/")) 17 { 18 Value = SaveBinaryFile(response, FileName); 19 20 } 21 22 } 23 catch (Exception err) 24 { 25 string aa = err.ToString(); 26 } 27 28 } 29 30 /// <summary> 31 /// Save a binary file to disk. 32 /// </summary> 33 /// <param name="response">The response used to save the file</param> 34 // 将二进制文件保存到磁盘 35 private static bool SaveBinaryFile(WebResponse response, string FileName) 36 { 37 bool Value = true; 38 byte[] buffer = new byte[1024]; 39 40 try 41 { 42 if (File.Exists(FileName)) 43 File.Delete(FileName); 44 Stream outStream = System.IO.File.Create(FileName); 45 Stream inStream = response.GetResponseStream(); 46 47 int l; 48 do 49 { 50 l = inStream.Read(buffer, 0, buffer.Length); 51 if (l > 0) 52 outStream.Write(buffer, 0, l); 53 } 54 while (l > 0); 55 56 outStream.Close(); 57 inStream.Close(); 58 } 59 catch 60 { 61 Value = false; 62 } 63 return Value; 64 }
3、从FTP上下载文件:
1 public class FtpDownload 2 { 3 public static void DownLoad(string FtpPath) 4 { 5 /*首先从配置文件读取ftp的登录信息*/ 6 string TempFolderPath = System.Configuration.ConfigurationManager.AppSettings["TempFolderPath"].ToString(); 7 string FtpUserName = System.Configuration.ConfigurationManager.AppSettings["FtpUserName"].ToString(); 8 string FtpPassWord = System.Configuration.ConfigurationManager.AppSettings["FtpPassWord"].ToString(); 9 string LocalFileExistsOperation = System.Configuration.ConfigurationManager.AppSettings["LocalFileExistsOperation"].ToString(); 10 11 12 Uri uri = new Uri(FtpPath); 13 string FileName = Path.GetFullPath(TempFolderPath) + Path.DirectorySeparatorChar.ToString() + Path.GetFileName(uri.LocalPath); 14 15 //创建一个文件流 16 FileStream fs = null; 17 Stream responseStream = null; 18 try 19 { 20 //创建一个与FTP服务器联系的FtpWebRequest对象 21 FtpWebRequest request = (FtpWebRequest)WebRequest.Create(uri); 22 //设置请求的方法是FTP文件下载 23 request.Method = WebRequestMethods.Ftp.DownloadFile; 24 25 //连接登录FTP服务器 26 request.Credentials = new NetworkCredential(FtpUserName, FtpPassWord); 27 28 //获取一个请求响应对象 29 FtpWebResponse response = (FtpWebResponse)request.GetResponse(); 30 //获取请求的响应流 31 responseStream = response.GetResponseStream(); 32 33 //判断本地文件是否存在,如果存在,则打开和重写本地文件 34 35 if (File.Exists(FileName)) 36 { 37 if (LocalFileExistsOperation == "write") 38 { 39 fs = File.Open(FileName, FileMode.Open, FileAccess.ReadWrite); 40 41 } 42 } 43 44 //判断本地文件是否存在,如果不存在,则创建本地文件 45 else 46 { 47 fs = File.Create(FileName); 48 } 49 50 if (fs != null) 51 { 52 53 int buffer_count = 65536; 54 byte[] buffer = new byte[buffer_count]; 55 int size = 0; 56 while ((size = responseStream.Read(buffer, 0, buffer_count)) > 0) 57 { 58 fs.Write(buffer, 0, size); 59 60 } 61 fs.Flush(); 62 fs.Close(); 63 responseStream.Close(); 64 } 65 } 66 finally 67 { 68 if (fs != null) 69 fs.Close(); 70 if (responseStream != null) 71 responseStream.Close(); 72 } 73 74 75 } 76 }