java 文件目录树

  public static void main(String[] args) {
      File root = new File("${path}/apache-tomcat-7.0.93/webapps/manager/");
      tree(root, -1, 0, "");
  }    

  public static void tree(File file, int index, int parentIndex, String parentFix) {
      String nowFix = "";
      if (parentIndex == 0) {
         nowFix = parentFix + "  ";
      } else if(parentIndex > 0) {
         nowFix = parentFix + "| ";
      }
      System.out.println(nowFix + (parentIndex >= 0 ? "|-" : "") + file.name());
      
      if (file.isDirectory()) {
        files[] files = file.listFiles();
        if (files == null) return;
        List<File> fileList = Arrays.stream(files).sorted((f1, f2) -> f2.getName().compareToIgnoreCase(f1.getName())).collect(Collections.toList());
        for (int i = fileList.size() - 1; i >= 0; --i) {
           File f = fileList.get(i);
           tree(f, i, index, nowFix);
        }
      }
  } 
}