Java递归生成本地文件目录(树行结构)

1.读取txt文件保存的文件目录结构

2.递归生成本地文件目录树形结构，并修改目录文件前缀进行递增

3.结果截图

4.代码

package com.zfi.server.device;

import io.swagger.annotations.Api;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;

@RestController
@RequestMapping("test")
@Api(tags = "test")
public class FileAddTest {
    public static void main(String[] args) {
        String txtFileName = "F://temp//questions.txt";
        String outputDirectory = "F://temp//output";

        int directoryCount = 1;
        int fileCount = 1;
        String currentDirectory = null; // 记录最近一次生成的目录名称

        try (BufferedReader reader = new BufferedReader(new FileReader(txtFileName))) {
            String line;
            while ((line = reader.readLine()) != null) {
                if (line.startsWith("-")) {
                    // 如果是目录行，则创建目录
                    String directoryName = String.format("%02d%s", directoryCount, line.substring(1).trim()); // 去掉前导的"-"
                    createDirectory(outputDirectory, directoryName);
                    currentDirectory = directoryName; // 更新最近一次生成的目录名称
                    directoryCount++;
                } else {
                    // 否则，认为是文件，将其写入当前目录
                    if (currentDirectory != null) {
                        String fileName = String.format("%02d%s", fileCount, line.trim()+".md");
                        createFile(outputDirectory + File.separator + currentDirectory, fileName);
                        fileCount++;
                    } else {
                        System.out.println("警告：文件 '" + line + "' 没有对应的目录。");
                    }
                }
            }
            System.out.println("文件和目录生成完成。");
        } catch (IOException e) {
            System.out.println("发生异常：" + e.getMessage());
            e.printStackTrace();
        }
    }

    private static void createDirectory(String parentDir, String dirName) {
        File directory = new File(parentDir, dirName);
        if (!directory.exists()) {
            directory.mkdir();
            System.out.println("生成目录：" + directory.getAbsolutePath());
        } else {
            System.out.println("目录已存在：" + directory.getAbsolutePath());
        }
    }

    private static void createFile(String parentDir, String fileName) throws IOException {
        File file = new File(parentDir, fileName);
        if (!file.exists()) {
            file.createNewFile();
            System.out.println("生成文件：" + file.getAbsolutePath());
        } else {
            System.out.println("文件已存在：" + file.getAbsolutePath());
        }
    }
}