你需要设置 SelectionMode: chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
参见示例代码
[code="java"]
package com.xan.fortest;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class SwingTester extends JPanel implements ActionListener {
private static final long serialVersionUID = 4537424836172729931L;
JButton go;
JFileChooser chooser;
private final static String chooserTitle = "Folder Chooser";
public SwingTester() {
go = new JButton("Choose Folder");
go.addActionListener(this);
add(go);
}
public void actionPerformed(ActionEvent e) {
chooser = new JFileChooser();
chooser.setCurrentDirectory(new java.io.File("."));
chooser.setDialogTitle(chooserTitle);
/****** SHOULD SET THIS **********/
chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
//
// disable the "All files" option.
//
chooser.setAcceptAllFileFilterUsed(false);
//
if (chooser.showOpenDialog(this) == JFileChooser.APPROVE_OPTION) {
System.out.println("getCurrentDirectory(): "
+ chooser.getCurrentDirectory());
System.out.println("getSelectedFile() : "
+ chooser.getSelectedFile());
} else {
System.out.println("No Selection ");
}
}
public Dimension getPreferredSize() {
return new Dimension(400, 400);
}
public static void main(String s[]) {
JFrame frame = new JFrame("");
SwingTester panel = new SwingTester();
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
frame.getContentPane().add(panel, "Center");
frame.setSize(panel.getPreferredSize());
frame.setVisible(true);
}
}
[/code]