Java - JTree 不遵循路径层次结构

Question

我需要创建一个树节点，它使用 HashMap 构建文件树，HashMap 的键是路径，它的值是文件名。我已经实现了分解键值以构建层次结构的代码：

public void createNode(HashMap<String, String> map) {
        DefaultMutableTreeNode root = new DefaultMutableTreeNode("SQL Scripts");
        DefaultTreeModel treeModel = new DefaultTreeModel(root);
        tree.setModel(treeModel);
        Set<String> keys = map.keySet();
        Iterator<String> it = keys.iterator();
        while (it.hasNext()) {
            String key = it.next();
            String value = map.get(key);
            String[] path = key.split("/");
            DefaultMutableTreeNode parent = root;
            for (int i = 0; i < path.length; i++) {
                boolean found = false;
                int index = 0;
                Enumeration e = parent.children();
                while (e.hasMoreElements()) {
                    DefaultMutableTreeNode node = (DefaultMutableTreeNode) e.nextElement();
                    if (node.toString().equals(path[i])) {
                        found = true;
                        break;
                    }
                    index++;
                }
                if (!found) {
                    DefaultMutableTreeNode child = new DefaultMutableTreeNode(path[i]);
                    treeModel.insertNodeInto(child, parent, index);
                    parent = child;
                } else {
                    parent = (DefaultMutableTreeNode) treeModel.getChild(parent, index);
                }
            }
            DefaultMutableTreeNode child = new DefaultMutableTreeNode(value);
            treeModel.insertNodeInto(child, parent, parent.getChildCount());
        }
    }

但由于某些我无法识别的原因，它不起作用。我仍然得到以下结果：

谁能告诉我我的代码实现哪里做错了？

Answer 1

问题似乎是您试图使用 / 拆分 Windows 文件路径，除了 Windows 文件路径由 \ 分隔，这当然也是正则表达式的转义字符

你可以...

使用key.replace(File.separatorChar, '/').split("/")将\更改为/并拆分

或者...

File file = new File(key);
Path path = file.toPath();
// Path path = Paths.get(key);
for (int index = 0; index < path.getNameCount(); index++) {
    String subPath = path.getName(index));
    //...
}

或者...

File file = new File(key);
Path path = file.toPath();
// Path path = Paths.get(key);
Iterator<Path> it = path.iterator();
while (it.hasNext()) {
    Path next = it.next();
    String subPath = path.getFileName();
    //...
}