类似windows的文件路径选择的对话框在java如何实现

Question

我想在一按钮上加载监听，就弹出类似windows的文件路径选择的对话框，用于保存文件路径。
请问大虾们如何实现

Answer 1

JFileChooserhow to use it:
http://java.sun.com/docs/books/tutorial/uiswing/components/filechooser.html

Answer 2

public class FileSelector {
    private FileFilter acceptFileType ;
    private FileFilter acceptListType;
    private Frame frame = new Frame();
    private JFileChooser fileChooser;
    
    public FileSelector(){
        acceptFileType = new javax.swing.filechooser.FileFilter() {
            public boolean accept(File file) { //可接受的文件类型
                String  name = file.getName().toLowerCase();
                return  name.endsWith(".mp3")||
                         name.endsWith(".MP3")||
                         name.endsWith(".wav")||
                         name.endsWith(".WAV")||
                         file.isDirectory();
            }
            public String getDescription() { //文件描述
                return "mp3,wav,midi 音乐文件";
            }
        };
        acceptListType = new javax.swing.filechooser.FileFilter(){
            public boolean accept(File file){
                String  name = file.getName().toLowerCase();
                return  name.endsWith(".list")||
                         name.endsWith(".LIST")||
                         file.isDirectory();
            }
            public String getDescription(){
                return "java版媒体播放器专用播放列表";
            }
        };
        fileChooser = new JFileChooser(FileSystemView.getFileSystemView());
    }
    File openFile(){
        fileChooser.setFileFilter(acceptFileType);
        fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
        fileChooser.setMultiSelectionEnabled(false);
        fileChooser.setDialogTitle("打开单个文件");
        int result = fileChooser.showOpenDialog(frame);
        if(result == JFileChooser.APPROVE_OPTION){
            return fileChooser.getSelectedFile();
        }
        else{
            return null;
        }
    }
    File[] openMultiFile(){
        fileChooser.setFileFilter(acceptFileType);
        fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
        fileChooser.setMultiSelectionEnabled(true);
        fileChooser.setDialogTitle("打开多个文件");
        int result = fileChooser.showOpenDialog(frame);
        if(result == JFileChooser.APPROVE_OPTION){
            File[] files = fileChooser.getSelectedFiles();
            return files;
        }
        else{
            return null;
        }
    }
    File[] openDirectory(){
        File file;
        fileChooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
        fileChooser.setDialogTitle("打开整个目录");
        int result = fileChooser.showOpenDialog(frame);
        if(result == JFileChooser.APPROVE_OPTION){
            file = fileChooser.getSelectedFile();
            if(file==null||file.getName().equals("")){
                JOptionPane.showMessageDialog(frame, "错误的路径", "出错了",JOptionPane.ERROR_MESSAGE);
                return null;
            }
            return file.listFiles(new FilenameFilter(){
                public boolean accept(File dir,String name){
                    return name.indexOf(".mp3")!=-1||
                            name.indexOf(".MP3")!=-1||
                            name.indexOf(".wav")!=-1||
                            name.indexOf(".WAV")!=-1;
                }
            });
        }
        else
            return null;
    }
}

Answer 3

javax.swing.JFileChooser;
JFileChooser jf=new JFileChooser();
jf.showSaveDialog(null);或者if.showSaveDialog(容器);

Answer 4

public class FileChooserDemo {
static private final String newline = "\n";
    JButton openButton, saveButton;
    JTextArea log;
    JFileChooser fc;
    JFrame jf = null;
    
    public FileChooserDemo(){
     jf = new JFrame();
     Container cp = jf.getContentPane();
     log = new JTextArea(5,20);
        log.setMargin(new Insets(5,5,5,5));
        log.setEditable(false);
        JScrollPane logScrollPane = new JScrollPane(log);
        fc = new JFileChooser();
        openButton = new JButton("Open a File...");
        openButton.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e) {
int returnVal = fc.showOpenDialog(jf);
            if (returnVal == JFileChooser.APPROVE_OPTION) {
                File file = fc.getSelectedFile();                
                log.append("Opening: " + file.getName() + "." + newline);
            } else {
                log.append("Open command cancelled by user." + newline);
            } }
        });
        saveButton = new JButton("Save a File...");
        saveButton.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e) {
int returnVal = fc.showSaveDialog(jf);
            if (returnVal == JFileChooser.APPROVE_OPTION) {
                File file = fc.getSelectedFile();
                
                log.append("Saving: " + file.getName() + "." + newline);
            } else {
                log.append("Save command cancelled by user." + newline);
            }

}});
        JPanel buttonPanel = new JPanel(); 
        buttonPanel.add(openButton);
        buttonPanel.add(saveButton);
        cp.add(buttonPanel, BorderLayout.PAGE_START);
        cp.add(logScrollPane, BorderLayout.CENTER);
        jf.setVisible(true);
        jf.pack();
        jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);    }
    public static void main(String []args){
     new FileChooserDemo();
    }
}

Answer 5

貼失誤了 把我那個里的file.getName() 要改成  file.getAbsolutePath()   呵呵    就可以