FTP upload Download

Package cn.tisson.icsp.utils;

Import Java.io.File;

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;

public class Ftpapche {

private static FtpClient ftpclient = new FtpClient ();

private static String encoding = System.getproperty ("file.encoding");

/**

* Description: Uploading files to FTP server

*

* @param URL FTP server hostname

* @param Port FTP Server

* @param username FTP login Account

* @param password FTP login password

* @param path FTP server to save the directory, if the root directory is "/"

* @param filename uploaded to the FTP server

* Input stream @param input local file

* @return returns TRUE, otherwise false

* @Version1.0

*/

public static Boolean uploadfile (string url, int port, string username,

string password, string path, string filename, InputStream input) {

Boolean result = false;

try {

int reply;

If you use the default port, you can connect directly to the FTP server using Ftp.connect (URL)

Ftpclient.connect (URL);

Ftp.connect (URL, port);//Connect FTP server

Login

Ftpclient.login (username, password);

ftpclient.setcontrolencoding (encoding);

Verify that the connection is successful

Reply = Ftpclient.getreplycode ();

if (! Ftpreply.ispositivecompletion (Reply)) {

System.out.println ("Connection failed");

Ftpclient.disconnect ();

return result;

}

Transfer working directory to the specified directory

Boolean change = ftpclient.changeworkingdirectory (path);

Ftpclient.setfiletype (Ftp.binary_file_type);

if (change) {

result = Ftpclient.storefile (new String (Filename.getbytes (encoding), "iso-8859-1"), input);

if (result) {

System.out.println ("Upload succeeded!");

}

}

Input.close ();

Ftpclient.logout ();

} catch (IOException e) {

E.printstacktrace ();

} finally {

if (ftpclient.isconnected ()) {

try {

Ftpclient.disconnect ();

} catch (IOException IoE) {

}

}

}

return result;

}

/**

* Description: Download files from FTP server

*

* @param URL FTP server hostname

* @param Port FTP Server

* @param username FTP login Account

* @param password FTP login password

* @param the relative path on the RemotePath FTP server

* @param filename to download

* @param localPath saved to local path after download

* @return

* @Version1.0

*/

public static Boolean downfile (string url, int port, string username,

string password, string remotepath, String fileName,

String LocalPath) {

Boolean result = false;

try {

int reply;

ftpclient.setcontrolencoding (encoding);

/*

* In order to upload and download Chinese documents, some places suggest using the following two sentences instead

* New String (remotepath.getbytes (encoding), "Iso-8859-1") transcoding.

* After testing, pass.

*/

Ftpclientconfig conf = new Ftpclientconfig (FTPCLIENTCONFIG.SYST_NT);

Conf.setserverlanguagecode ("zh");

Ftpclient.connect (URL, port);

If you use the default port, you can connect directly to the FTP server using Ftp.connect (URL)

Ftpclient.login (username, password);//Login

Set file Transfer type to binary

Ftpclient.setfiletype (Ftpclient.binary_file_type);

Get the FTP Login answer code

Reply = Ftpclient.getreplycode ();

Verify that the login is successful

if (! Ftpreply.ispositivecompletion (Reply)) {

Ftpclient.disconnect ();

SYSTEM.ERR.PRINTLN ("FTP server refused connection.");

return result;

}

Transfer to FTP server directory to the specified directory

Ftpclient.changeworkingdirectory (New String (Remotepath.getbytes (encoding), "iso-8859-1"));

Get a list of files

ftpfile[] fs = Ftpclient.listfiles ();

for (Ftpfile Ff:fs) {

if (Ff.getname (). Equals (FileName)) {

File LocalFile = new file (LocalPath + "/" + ff.getname ());

OutputStream is = new FileOutputStream (localfile);

Ftpclient.retrievefile (Ff.getname (), is);

Is.close ();

}

}

Ftpclient.logout ();

result = true;

} catch (IOException e) {

E.printstacktrace ();

} finally {

if (ftpclient.isconnected ()) {

try {

Ftpclient.disconnect ();

} catch (IOException IoE) {

}

}

}

return result;

}

}

FTP upload Download