FTP4jを使用していて、JTreeにFTPサーバーのルートディレクトリを設定したいと思います。FTP4jのcurrentDirectory()メソッドを使用してみましたが、「/」しか返されません。これは役に立ちません。また、ftp:// urlをJTreeを初期化するメソッドに渡してみましたが、これも機能しません。これは私の最初のSwingプログラムなので、どこに行くのかちょっと困惑しています。コードは次のとおりです。
package net.emptybox.ui;
import java.awt.EventQueue;
import javax.swing.JFrame;
import net.miginfocom.swing.MigLayout;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JLabel;
import javax.swing.JTextField;
import java.awt.FlowLayout;
import java.awt.BorderLayout;
import javax.swing.BoxLayout;
import javax.swing.JSplitPane;
import javax.swing.JSeparator;
import javax.swing.JTree;
import javax.swing.JTextArea;
import java.awt.Component;
import java.io.File;
import net.emptybox.ui.FTP;
import javax.swing.Box;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.JScrollPane;
import javax.swing.ScrollPaneConstants;
public class GUI {
static JFrame frame;
static private JSplitPane splitPane;
static private JLabel lblServer;
static private JTextField serverField;
static private JLabel lblPort;
static private JTextField portField;
static private JLabel lblUsername;
static private JTextField usernameField;
static private JLabel lblPassword;
static private JTextField passwordField;
static private JButton connectButton;
static private JSeparator separator;
static private JTextArea detailArea;
static private JButton downloadButton;
static private JButton uploadButton;
static private Component horizontalGlue;
static private JTextField fileField;
static private JButton goButton;
static private Component horizontalGlue_1;
static FileSystemModel fileSystemModel;
static JLabel consoleLabel;
private static Component verticalGlue;
private static JScrollPane scrollPane;
static JTree fileTree;
/**
* Launch the application.
*/
/**
* Create the application.
*/
public GUI() {
initialize();
}
/**
* Initialize the contents of the frame.
*/
public static void initialize() {
frame = new JFrame();
frame.setBounds(100, 100, 648, 300);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setLayout(new MigLayout("", "[grow]", "[][][][grow][]"));
lblServer = new JLabel("Server:");
frame.getContentPane().add(lblServer, "flowx,cell 0 0");
consoleLabel = new JLabel("");
frame.getContentPane().add(consoleLabel, "flowx,cell 0 1");
separator = new JSeparator();
frame.getContentPane().add(separator, "cell 0 2");
splitPane = new JSplitPane();
splitPane.setOneTouchExpandable(true);
splitPane.setContinuousLayout(true);
frame.getContentPane().add(splitPane, "cell 0 3,grow");
detailArea = new JTextArea();
detailArea.setEditable(false);
splitPane.setRightComponent(detailArea);
scrollPane = new JScrollPane();
scrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
splitPane.setLeftComponent(scrollPane);
serverField = new JTextField();
frame.getContentPane().add(serverField, "cell 0 0,growx");
lblPort = new JLabel("Port:");
frame.getContentPane().add(lblPort, "cell 0 0");
portField = new JTextField();
frame.getContentPane().add(portField, "cell 0 0,growx");
lblUsername = new JLabel("Username:");
frame.getContentPane().add(lblUsername, "cell 0 0");
usernameField = new JTextField();
frame.getContentPane().add(usernameField, "cell 0 0,growx");
lblPassword = new JLabel("Password:");
frame.getContentPane().add(lblPassword, "cell 0 0");
passwordField = new JTextField();
frame.getContentPane().add(passwordField, "cell 0 0,growx");
connectButton = new JButton("Connect");
frame.getContentPane().add(connectButton, "cell 0 0");
if (serverField.getText() == null || usernameField.getText() == null || passwordField.getText() == null) {
connectButton.disable();
} else {
connectButton.enable();
}
if (portField.getText() == null) {
portField.setText("21");
}
connectButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
FTP.connect(serverField.getText(), portField.getText(), usernameField.getText(), passwordField.getText());
}
});
downloadButton = new JButton("Download");
frame.getContentPane().add(downloadButton, "flowx,cell 0 4");
downloadButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
}
});
uploadButton = new JButton("Upload");
frame.getContentPane().add(uploadButton, "cell 0 4");
uploadButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
}
});
horizontalGlue_1 = Box.createHorizontalGlue();
frame.getContentPane().add(horizontalGlue_1, "cell 0 4,growx");
fileField = new JTextField();
frame.getContentPane().add(fileField, "cell 0 4");
fileField.setColumns(200);
goButton = new JButton("Go");
goButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
}
});
frame.getContentPane().add(goButton, "cell 0 4");
horizontalGlue = Box.createHorizontalGlue();
frame.getContentPane().add(horizontalGlue, "cell 0 4,alignx leading");
verticalGlue = Box.createVerticalGlue();
frame.getContentPane().add(verticalGlue, "cell 0 1");
}
private String getFileDetails(File file) {
if (file == null)
return "";
StringBuffer buffer = new StringBuffer();
buffer.append("Name: " + file.getName() + "\n");
buffer.append("Path: " + file.getPath() + "\n");
buffer.append("Size: " + file.length() + "\n");
return buffer.toString();
}
public static void populateTree(String directory) {
fileSystemModel = new FileSystemModel(new File(directory));
fileTree = new JTree(fileSystemModel);
scrollPane.setViewportView(fileTree);
}
}
サーバーとの接続が正常に確立され、ユーザーがログインすると、ポピュレートツリーが別のクラスによって呼び出されます。