Use component implementations in spring to upload/download files from an FTP server

Ftputil.java

Import Java.io.file;import Java.io.fileinputstream;import Java.io.filenotfoundexception;import Java.io.fileoutputstream;import Java.io.ioexception;import Java.io.inputstream;import Java.io.OutputStream;import Org.apache.commons.net.ftp.ftp;import Org.apache.commons.net.ftp.ftpclient;import Org.apache.commons.net.ftp.ftpfile;import org.apache.commons.net.ftp.ftpreply;/** * FTP upload Download Tool class * <p>Title: ftputil</p> * <p>description: </p> * @version 1.0 */public class Ftputil {/** * Description: Uploading a text to an FTP server * @param host FTP server hostname * @param port FTP server ports * @param username FTP login account * @param password FTP login password * @param ba Sepath FTP Server Base directory * @param filePath FTP server file storage path. For example, the date of storage:/2015/01/01. The path to the file is Basepath+filepath * @param filename is uploaded to the file name on the FTP server * @param input stream * @return successfully returns TRUE, otherwise false */public STA Tic Boolean UploadFile (string host, int port, string username, string password, string basepath,string FilePath, String fi Lename, InputStream Input) {Boolean resUlt = false; ftpclient ftp = new ftpclient (), try {int Reply;ftp.connect (host, port)///Connect FTP server//If using default port, you can use Ftp.connect (host) Direct connection to the FTP server Ftp.login (username, password);//Login reply = Ftp.getreplycode (); Ftpreply.ispositivecompletion (Reply)) {ftp.disconnect (); return result;} Switch to upload directory if (!ftp.changeworkingdirectory (Basepath+filepath)) {//If directory does not exist create directory string[] dirs = Filepath.split ("/"); String TempPath = Basepath;for (string dir:dirs) {if (null = = Dir | | ". Equals (dir)) Continue;temppath + ="/"+ dir;if (!ftp.changeworkingdirectory (TempPath)) {if (!ftp.makedirectory ( TempPath) {return result;} else {ftp.changeworkingdirectory (TempPath);}}} Set the type of upload file to binary type Ftp.setfiletype (ftp.binary_file_type);//Upload file if (!ftp.storefile (filename, input)) {return result;} Input.close (); ftp.logout (); result = true;} catch (IOException e) {e.printstacktrace ();} finally {if (ftp.isconnected ()) {try {ftp.disconnect ();} catch (IOException IOE) {}}}return result;} /** * Description: Download files from FTP server * @param host FTP Server hostname * @param port FTP server ports * @param username FTP login account * @param password FTP login password * @param relative to the RemotePath FTP server Path * @param filename to download * @param localPath the path saved to local after download * @return */public static Boolean downloadFile (String ho St, int port, string username, string password, string remotepath,string fileName, String localPath) {Boolean result = Fal Se ftpclient ftp = new ftpclient (), try {int Reply;ftp.connect (host, port), or//if using the default port, you can use Ftp.connect (host) Direct connection to the FTP server Ftp.login (username, password);//Login reply = Ftp.getreplycode (); Ftpreply.ispositivecompletion (Reply)) {ftp.disconnect (); return result;} Ftp.changeworkingdirectory (RemotePath);//Transfer to FTP server directory ftpfile[] fs = Ftp.listfiles (); for (Ftpfile Ff:fs) {if ( Ff.getname (). Equals (fileName) {file LocalFile = new File (LocalPath + "/" + ff.getname ()); OutputStream is = new FileOutput Stream (LocalFile); Ftp.retrievefile (Ff.getname (), is); Is.close ();}} Ftp.logout (); result = true;} catch (IOException e) {e.printstacktrace ();} finAlly {if (ftp.isconnected ()) {try {ftp.disconnect ();} catch (IOException IoE) {}}}return result;} public static void Main (string[] args) {try {FileInputStream in=new fileinputstream (New File ("D:\\temp\\image\\g          Aigeming.jpg ")); Boolean flag = UploadFile ("192.168.25.133", +, "Ftpuser", "Ftpuser", "/home/ftpuser/www/images", "/2015/01/21", "          Gaigeming.jpg ", in);      SYSTEM.OUT.PRINTLN (flag);      } catch (FileNotFoundException e) {e.printstacktrace (); }  }}

Use component implementations in spring to upload/download files from an FTP server