如何在Java中读取树结构制表符分隔的txt文件

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

class TreeNode {
    String value;
    List<TreeNode> children;

    public TreeNode(String value) {
        this.value = value;
        this.children = new ArrayList<>();
    }
}

public class TreeReader {
    public static void main(String[] args) {
        String filePath = "tree.txt"; // 替换为实际的文件路径

        try (BufferedReader br = new BufferedReader(new FileReader(filePath))) {
            String line;
            TreeNode root = new TreeNode("Root");

            while ((line = br.readLine()) != null) {
                String[] fields = line.split("\t");
                int level = fields.length - 1;

                TreeNode currentNode = root;
                for (int i = 1; i <= level; i++) {
                    String value = fields[i];
                    TreeNode childNode = findChildNode(currentNode, value);
                    if (childNode == null) {
                        childNode = new TreeNode(value);
                        currentNode.children.add(childNode);
                    }
                    currentNode = childNode;
                }
            }

            // 处理或输出树结构
            // ...

        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static TreeNode findChildNode(TreeNode parent, String value) {
        for (TreeNode child : parent.children) {
            if (child.value.equals(value)) {
                return child;
            }
        }
        return null;
    }
}