递归：遍历指定文件夹

package filedemo;import java.io.File;public class FileTraversalDemo {//递归：遍历指定文件夹public static void main(String[] args) {File dir = new File("d:\\Test");listAll(dir, 0);}public static void listAll(File dir, int i) {System.out.println(getSpace(i) + dir.getName());i++;File[] files = dir.listFiles();for (File file : files) {if (file.isDirectory()) {listAll(file, i);} else {System.out.println(getSpace(i) + file.getName());}}}//打印间隔符：---|public static String getSpace(int i) {StringBuilder sb = new StringBuilder();sb.append("|");for (int x = 0; x < i; x++) {sb.insert(0, "---|");}return sb.toString();}}