使用 Java 上載檔案至 FTP 伺服器 (Use Java to upload file to FTP Server)

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import java.io.DataOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import sun.net.TelnetOutputStream; import sun.net.ftp.FtpClient;

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public static void send(String hostname, int port, String username, String password, File source, String destination) throws IOException {     FtpClient ftp = new FtpClient(hostname, port);     ftp.login(username, password);     ftp.binary();     FileInputStream fos = new FileInputStream(source);     TelnetOutputStream tos = ftp.put(destination);     DataOutputStream dos = new DataOutputStream(tos);     byte[] buffer = new byte[1024 * 1024];     for (int length; (length = fos.read(buffer)) > 0;) {         dos.write(buffer, 0, length);     }     tos.flush();     tos.close();     fos.close(); }   public static void send(String hostname, String username, String password, File source, String destination) throws IOException {     send(hostname, 21, username, password, source, destination); }