Java 将文件路径从文件树传输到另一个类

这可能有点难以解释，但我会尽我最大的努力。我有一个名为FileBrowser的类，其中有一行是

String hello=fileNode.getFile

，它从Jtree中获取单击的文件节点并将其保存到变量hello中。全班如下

FileBrowser.java

import java.awt.BorderLayout;
import java.io.File;
import java.io.IOException;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.SwingUtilities;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;

import org.apache.commons.io.FileUtils;

public class FileBrowser extends JPanel {

    public DefaultMutableTreeNode root;

    public DefaultTreeModel treeModel;

    public JTree tree;


    public FileBrowser() {
        //JFrame frame = new JFrame("File Browser");
        //frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        File fileRoot = new File("C://");
        root = new DefaultMutableTreeNode(new FileNode(fileRoot));
        treeModel = new DefaultTreeModel(root);

        tree = new JTree(treeModel);

        tree.setShowsRootHandles(true);
        JScrollPane scrollPane = new JScrollPane(tree);

        tree.addTreeSelectionListener(new TreeSelectionListener() {
            public void valueChanged(TreeSelectionEvent event) {
                /* new */
                DefaultMutableTreeNode dmtn = (DefaultMutableTreeNode)
                        tree.getLastSelectedPathComponent();
                FileNode fileNode = (FileNode)dmtn.getUserObject();
                File file = fileNode.getFile();

               //THIS THE STRING I WOULD LIKE TO TRANSFER TO VIEWER_NAVIGATOR
               String hello=file.toString();



                call(hello,dmtn);

            }
        });


       // frame.add(scrollPane);
        //frame.setLocationByPlatform(true);
        //frame.setSize(640, 480);
        //frame.setVisible(true);

        CreateChildNodes ccn = 
                new CreateChildNodes(fileRoot, root);
        new Thread(ccn).start();
    }


    private void call(String file, DefaultMutableTreeNode dmtn) {
        System.out.println("Exporting file and converting to HTML");
         String[] arguments = new String[] {file, dmtn+".html", "HTML"};
     OITSample.func(arguments);     
    }






    public class CreateChildNodes implements Runnable {

        private DefaultMutableTreeNode root;

        private File fileRoot;

        public CreateChildNodes(File fileRoot, 
                DefaultMutableTreeNode root) {
            this.fileRoot = fileRoot;
            this.root = root;
        }

        public void run() {
            createChildren(fileRoot, root);
        }

        private void createChildren(File fileRoot, 
                DefaultMutableTreeNode node) {
            File[] files = fileRoot.listFiles();
            if (files == null) return;

            for (File file : files) {
                DefaultMutableTreeNode childNode = 
                        new DefaultMutableTreeNode(new FileNode(file));
                node.add(childNode);
                if (file.isDirectory()) {
                    createChildren(file, childNode);
                }}}}

    public class FileNode {

        private File file;

        public FileNode(File file) {
            this.file = file;
        }

        public File getFile() {
            return file;
        }


        @Override
        public String toString() {
            String name = file.getName();
            if (name.equals("")) {
                return file.getAbsolutePath();
            } else {
                return name;
            }}}}

我想获取字符串变量hello，当单击文件节点时，该变量将被发送到下面的Viewer_Navigator类，到editorpane上获取文件的区域。这是一个具体的领域：

           File file = new File("the string hello from the other class should go in here");

Viewer_Navigator.java

public class Viewer_Navigator {


    private JFrame frame;
    public static void main(String[] args) {


        String defStartParams = "AdminStart.xml";

        String adminParams = parseXML(defStartParams);

        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    Viewer_Navigator window = new Viewer_Navigator();
                    window.frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });

    }

    private static String parseXML(String defStartParams) {
        // We're cheating for now
        String params = "sb_ContName='com.staorbase.service.SB_AdminSvc'";
        params += ";";

        return params;
    }

    /**
    * Create the application.
    */
    public Viewer_Navigator() {



        initialize();
    }

    /**
    * Initialize the contents of the frame.
    */
    private void initialize() {
        frame = new JFrame();
        frame.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
            }
        });
        frame.setBounds(100, 100, 840, 545);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLocationRelativeTo(null);  //put the jframe on center of the screen -added


        JToolBar toolBar = new JToolBar();
        frame.getContentPane().add(toolBar, BorderLayout.NORTH);

        final JSplitPane splitPane = new JSplitPane();
        splitPane.setDividerLocation(0.8);
        splitPane.setResizeWeight(0.3);
        frame.getContentPane().add(splitPane, BorderLayout.CENTER);


        FileBrowser testing=new FileBrowser();


        final JEditorPane editorpane= new JEditorPane();
           final JScrollPane editorScrollPane = new JScrollPane(editorpane);
           editorScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
        final JPanel panel2 = new JPanel(new BorderLayout());
            panel2.add(editorScrollPane);
           File file = new File("the string 'hello' from the other class should go in here");
           try {
            editorpane.setPage(file.toURI().toURL());
        } catch (MalformedURLException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        } catch (IOException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }


            JScrollPane jScrollPane=new JScrollPane();

            jScrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
            jScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
            jScrollPane.setViewportBorder(new LineBorder(Color.BLUE));
            jScrollPane.getViewport().add(testing.tree);


            final JPanel panel = new JPanel(new BorderLayout());
            panel.add(jScrollPane,BorderLayout.CENTER);


         splitPane.setLeftComponent(panel);
        splitPane.setRightComponent(panel2);
    }



}

有没有关于我应该怎么做的建议？如果您需要任何澄清，请告诉我

---

谢谢

您在

JTree

中显示文件夹和文件，并希望打开一个窗口，允许编辑用户在树中单击的文件，对吗？是的。我只需要将单击的文件从文件浏览器导入编辑器面板，我相信我知道如何完成其余的操作。在class

FileBrowser

中的方法

valueChanged（）

中，只需打开一个自定义

JDialog

，其中包含一些Swing组件，您可以通过该组件显示和编辑文件的内容，比如

JTextArea

。注意，您需要编写一个扩展

JDialog

的类。也许只需转换您的

Viewer\u Navigator

类即可。如果您想让我为您提供如何实现这一点的实际代码，请告诉我。在我的情况下，我必须这样做，以便它在Viewer_Navigator类的splitPane中显示内容，特别是正确的组件。不幸的是，我不被允许以任何其他方式来做这件事。Oracle的一个摘录：Swing提供了三个通常有用的顶级容器类：

JFrame

、

JDialog

、和

JApplet

，换句话说，就是你可以用

JFrame

做什么，您还可以使用

JDialog

，Swing应用程序应该正好由一个

JFrame

组成。