Google应用脚本 - 迭代文件夹和子文件夹

Question

我想使用谷歌应用程序脚本遍历Google云端硬盘中文件夹的树形结构.下面的代码列出了一些文件夹,但不是全部.你能建议什么是深入研究文件夹结构的最佳技术吗？我想首先记录所有文件夹名称.

谢谢.

function test() {
 listSubfolders(DriveApp.getFolderById('FOLDER_ID'));
}

function listSubfolders(parentFolder) {
  var childFolders = parentFolder.getFolders();

 while(childFolders.hasNext()) {
   Logger.log(childFolders.next().getName());
   listSubfolders(childFolders.next());   

 }


}

Answer 1

要访问子文件夹,您可以这样做,

function getSubFolders(parent) {
  parent = parent.getId();
  var childFolder = DriveApp.getFolderById(parent).getFolders();
  while(childFolder.hasNext()) {
    var child = childFolder.next();
    Logger.log(child.getName());
    getSubFolders(child);
  }
  return;
}

function listFolders() {
  var parentFolder = DriveApp.getFolderById("0B1n6YLYwFmK_dUpzRWhDRXNwdWc");
  var childFolders = parentFolder.getFolders();
  while(childFolders.hasNext()) {
    var child = childFolders.next();
    Logger.log(child.getName());
    getSubFolders(child);
  }
}

Answer 2

此 Google 脚本将生成包含所有文件和文件夹的 Google Drive 树。

将此脚本复制到您的脚本编辑器中。从“选择函数”菜单中选择函数“genFolderTree”。将根文件夹名称“RootDir”更改为函数 genFolderTree() 中的根目录

var foldername = 'RootDir';

Google 脚本源代码 -

function genFolderTree() {

  try {

  var foldername = 'RootDir';
  var folderlisting = 'TreeView_' + foldername;

  var parentFolder = DriveApp.getFoldersByName(foldername).next();


  var ss = SpreadsheetApp.create(folderlisting);
  var sheet = ss.getActiveSheet();
  var frontCell = [];
  sheet.appendRow([foldername]).getCurrentCell().setFontWeight('bold').setFontColor('red');
  frontCell.push(" ");
  getChildNode(parentFolder,sheet,frontCell);
  var files = parentFolder.getFiles();
  while (files.hasNext()) {
    frontCell.push(files.next().getName());
    sheet.appendRow( frontCell);
    frontCell.pop();
    }

  } catch (e) {

    Logger.log(e.toString());

  }

}


function getChildNode(parent,sheet,frontCell) {

  var childFolders = parent.getFolders();
  while (childFolders.hasNext()) {

    var childFolder = childFolders.next();

    frontCell.push(childFolder.getName())
    sheet.appendRow(frontCell);
    sheet.getRange(sheet.getLastRow(), frontCell.length).setFontWeight('bold').setFontColor('red');
    frontCell.pop();
    var files = childFolder.getFiles();
    frontCell.push(" ");
    var start_row = 0;
    var row_no = 0;
    while (files.hasNext()) {
      frontCell.push(files.next().getName());
      sheet.appendRow(frontCell);
      if(row_no==0){
        start_row = sheet.getLastRow();
      }
      row_no=row_no+1;
      frontCell.pop();
    }
    if(row_no>0){
      var range;
      range = sheet.getRange(start_row, frontCell.length,row_no);
      // The row grouping depth is increased by row_no.
      range.shiftRowGroupDepth(1);
    }

    // Recursive call for any sub-folders
    getChildNode(childFolder,sheet,frontCell);
    frontCell.pop();
  }

}

您可以从Github 链接下载源代码