Java operation FTP, to achieve file upload download delete operation

To upload a file to an FTP server:

/*** Description: Uploading files to FTP server *@paramURL FTP server hostname *@paramPort FTP server ports, if default port please write-1 *@paramUsername FTP login Account *@paramPassword FTP login password *@paramPath FTP Server save directory *@paramfilename uploaded to the FTP server *@paramInput Stream *@returnSuccess returns True, otherwise false*/       Public Static BooleanUploadFile (String URL,intport, string Username, string password, string path, string filename, InputStream input) {          BooleanSuccess =false; FtpClient FTP=Newftpclient (); Try          {              intreply; //connecting to an FTP server            if(Port >-1) {ftp.connect (URL, port); }              Else{ftp.connect (URL); }                            //log in to FTPftp.login (username, password); Reply=Ftp.getreplycode (); if(!ftpreply.ispositivecompletion (Reply))                  {Ftp.disconnect (); returnsuccess;              } ftp.changeworkingdirectory (path);                            Ftp.storefile (filename, input);              Input.close ();              Ftp.logout (); Success=true; }          Catch(IOException e) {Success=false;          Logger.error (Exception_name, E); }          finally          {              if(ftp.isconnected ()) {Try{ftp.disconnect (); }                  Catch(IOException e) {logger.error (Exception_name, E); }              }          }          returnsuccess; } 

To download files from an FTP server:

/*** Description: Download files from FTP server * @Version1.0 Jul, 5:32:36 PM by Tri Hongbao ([email protected]) Create *@paramURL FTP server hostname *@paramPort FTP Server ports *@paramUsername FTP login Account *@paramPassword FTP login password *@paramRemotePath The relative path on the FTP server *@paramfilename to download *@paramLocalPath saved to local path after download *@return      */       Public Static BooleanDownloadFile (String URL,intport, string Username, string password, string remotepath, String fileName, String localPath) {          BooleanSuccess =false; FtpClient FTP=Newftpclient (); Try          {              intreply; //connecting to an FTP server            if(Port >-1) {ftp.connect (URL, port); }              Else{ftp.connect (URL); } ftp.login (username, password);//LoginReply =Ftp.getreplycode (); if(!ftpreply.ispositivecompletion (Reply))                  {Ftp.disconnect (); returnsuccess; } ftp.changeworkingdirectory (RemotePath);//Transfer to FTP server directoryftpfile[] fs =Ftp.listfiles ();  for(Ftpfile ff:fs) {if(Ff.getname (). Equals (FileName)) {File LocalFile=NewFile (LocalPath + "/" +ff.getname ()); OutputStream is=NewFileOutputStream (LocalFile);                      Ftp.retrievefile (Ff.getname (), is);                  Is.close ();              }} ftp.logout (); Success=true; }          Catch(IOException e) {logger.error (Exception_name, E); }          finally          {              if(ftp.isconnected ()) {Try{ftp.disconnect (); }                  Catch(IOException e) {logger.error (Exception_name, E); }              }          }          returnsuccess; }  

To delete a file on the FTP server:

/*** < Delete files on FTP > * < remotely delete audio files on FTP server > *@paramURL FTP Server IP address *@paramPort FTP Server ports *@paramUsername FTP Server logon name *@paramPassword FTP server password *@paramRemotePath Remote file path *@paramfilename to delete *@return      * @see[Class, Class # method, Class # member]*/       Public Static BooleanDeleteftpfile (String URL,intport, string Username, string password, string remotepath, String fileName) {          BooleanSuccess =false; FtpClient FTP=Newftpclient (); Try          {              intreply; //connecting to an FTP server            if(Port >-1) {ftp.connect (URL, port); }              Else{ftp.connect (URL); }                            //Loginftp.login (username, password); Reply=Ftp.getreplycode (); if(!ftpreply.ispositivecompletion (Reply))                  {Ftp.disconnect (); returnsuccess; }                            //Transfer to FTP server directoryftp.changeworkingdirectory (RemotePath); Success= Ftp.deletefile (RemotePath + "/" +fileName);          Ftp.logout (); }          Catch(IOException e) {logger.error (Exception_name, E); Success=false; }          finally          {              if(ftp.isconnected ()) {Try{ftp.disconnect (); }                  Catch(IOException e) {logger.error (Exception_name, E); }              }          }          returnsuccess; }  

Required JAR Packages:

Commons-net-2.0.jar

This article transferred from: http://wenkaixuan.iteye.com/blog/1739344

Java operation FTP, to achieve file upload download delete operation