java中怎么创建目录结构图 java生成目录树

一、递归思想

二、目录层级的表示

package com.java.io;

import java.io.*;
import java.io.File;

public class DirTree {

	private int fileLevel;

	/**
	 * 输出初始给定的目录
	 * @param dirPath
	 */
	
	public void printDir(String dirPath) {

		String[] dirNameList = dirPath.split("\\\\");
		// 设定文件level的最初的层级
		fileLevel = dirNameList.length;
		for (int i = 0; i < dirNameList.length; i++) {
			System.out.println(createFileName(dirNameList[i], i));
		}
	}

	/**
	 * 创建目录名称，带缩进
	 * @param name
	 * @param level
	 * @return
	 */
	public String createFileName(String name, int level) {
		String fileNameStr = "";
		// 按层次进行缩进
		for (int i = 0; i < level; i++) {
			fileNameStr = fileNameStr + "  ";
		}
		fileNameStr = fileNameStr + "- " + name;
		return fileNameStr;
	}

	private void createDirTree(String filePath) {
		File file = new File(filePath);
		// 取得代表目录中所有文件的File对象数组
		File[] list = file.listFiles();
		// 遍历file数组
		for (int i = 0; i < list.length; i++) {
			if (list[i].isDirectory()) {
				System.out
						.println(createFileName(list[i].getName(), fileLevel));
				int tempLever = fileLevel;
				fileLevel++;
				// 递归子目录
				createDirTree(list[i].getPath());
				fileLevel = tempLever;
			} else {
				System.out
						.println(createFileName(list[i].getName(), fileLevel));
			}
		}
	}

	public static void main(String[] args) {
		// TODO Auto-generated method stub

		String pathname = "D:/java再学习";
		DirTree dirTree = new DirTree();
		dirTree.printDir(pathname);
		dirTree.createDirTree(pathname);

	}

}