向FTP服务器上上传和下传一个文件

程序中需要引入两个库文件
import sun.net.*;
import sun.net.ftp.*;

/*
*向FTP服务器上上传一个文件
*/

void putButton_actionPerformed(ActionEvent e) {
String server=serverEdit.getText();
String user=userEdit.getText();
String password=passwordEdit.getText();
String path=pathEdit.getText();
String filename=filenameEdit.getText();
try {
FtpClient ftpClient=new FtpClient();
ftpClient.openServer(server);
ftpClient.login(user, password);
if (path.length()!=0) ftpClient.cd(path);
ftpClient.binary();
TelnetOutputStream os=ftpClient.put(filename);
File file_in=new File(filename);
FileInputStream is=new FileInputStream(file_in);
byte[] bytes=new byte[1024];
int c;
while ((c=is.read(bytes))!=-1){
os.write(bytes,0,c);}
is.close();
os.close();
ftpClient.closeServer();
} catch (IOException ex) {;}
}
}



程序中需要引入两个库文件
import sun.net.*;
import sun.net.ftp.*;

/*
*从FTP服务器上下传一个文件
*/

void getButton_actionPerformed(ActionEvent e) {
String server=serverEdit.getText();
String user=userEdit.getText();
String password=passwordEdit.getText();
String path=pathEdit.getText();
String filename=filenameEdit.getText();
try {
FtpClient ftpClient=new FtpClient();
ftpClient.openServer(server);
ftpClient.login(user, password);
if (path.length()!=0) ftpClient.cd(path);
ftpClient.binary();
TelnetInputStream is=ftpClient.get(filename);
File file_out=new File(filename);
FileOutputStream os=new
FileOutputStream(file_out);
byte[] bytes=new byte[1024];
int c;
while ((c=is.read(bytes))!=-1) {
os.write(bytes,0,c);
}
is.close();
os.close();
ftpClient.closeServer();
} catch (IOException ex) {;}
}