在java中如何将JSONObject转换为DefaultMutableTreeNode？

import org.json.JSONObject;
import javax.swing.tree.DefaultMutableTreeNode;

public DefaultMutableTreeNode convertJSONObjectToTreeNode(JSONObject jsonObject) {
    DefaultMutableTreeNode root = new DefaultMutableTreeNode(); // 创建根节点

    // 遍历JSONObject的键值对
    for (String key : jsonObject.keySet()) {
        Object value = jsonObject.get(key);

        // 如果值是JSONObject类型，则递归调用该方法将其转换为TreeNode，并将其添加到根节点下
        if (value instanceof JSONObject) {
            DefaultMutableTreeNode childNode = convertJSONObjectToTreeNode((JSONObject) value);
            childNode.setUserObject(key);
            root.add(childNode);
        }
        // 如果值不是JSONObject类型，则直接将其添加到根节点下
        else {
            DefaultMutableTreeNode leafNode = new DefaultMutableTreeNode(value);
            leafNode.setUserObject(key);
            root.add(leafNode);
        }
    }

    return root;
}

JSONObject jsonObject = new JSONObject(jsonString); // 假设jsonString是包含JSONObject的字符串
DefaultMutableTreeNode treeNode = convertJSONObjectToTreeNode(jsonObject);