javascript - Node js:识别目录成员类型时出错

我想编写一个检查给定路径的子目录和文件的脚本。问题是：当一个子目录具有多个子目录时，将出现错误。如果没有多个子目录，则不会出现错误。有人知道我的代码为什么会失败吗？

谢谢您的帮助 ！

这个：

const fs = require('fs');

class File
{
  constructor(fileName, directory)
  {
    this.fileName = fileName;
    this.directory = directory;
  }

  read()
  {
    return fs.readFileSync(this.directory.formatedPath(this.fileName), 'utf8', function(err, data)
    {
      if (err) throw err;
      return data.toString();
    });
  }

  write()
  {

  }
}

class Directory
{
  constructor(path, pathLevel = 0)
  {
    this.reveal(path, pathLevel);
    this.organizeMembers();
  }

  reveal(path, pathLevel)
  {
    this.path = path;
    this.pathLevel = pathLevel;
    this.directory = fs.readdirSync(this.path);
  }

  organizeMembers()
  {
    this.files = [], this.directories = [];
    for (var member of this.directory)
    {
      if (fs.lstatSync(member).isFile()) this.files.push(new File(member, this));
      if (fs.lstatSync(member).isDirectory())
      {
        this.directories.push(new Directory(this.formatedPath(member), this.pathLevel+1));
      }
    }
  }

  formatedPath(member)
  {
    if (this.path[this.path.length -1] !== '/') return this.path + '/' + member;
    return this.path + member;
  }

  createDirectory(path)
  {
    if (!fs.existsSync(path)) fs.mkdirSync(path);
  }

}

var x = new Directory('./');

console.log(x);

产生这个：

fs.js:958
  binding.lstat(pathModule.toNamespacedPath(path));
          ^

Error: ENOENT: no such file or directory, lstat 'Neuer Ordner 3'
    at Object.fs.lstatSync (fs.js:958:11)
    at Directory.organizeMembers (/Users/mrb/Desktop/testFolder/nodePlayground.js:49:14)
    at new Directory (/Users/mrb/Desktop/testFolder/nodePlayground.js:32:10)
    at Directory.organizeMembers (/Users/mrb/Desktop/testFolder/nodePlayground.js:52:31)
    at new Directory (/Users/mrb/Desktop/testFolder/nodePlayground.js:32:10)
    at Object.<anonymous> (/Users/mrb/Desktop/testFolder/nodePlayground.js:70:9)
    at Module._compile (internal/modules/cjs/loader.js:654:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:665:10)
    at Module.load (internal/modules/cjs/loader.js:566:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:506:12)

但为什么 ？

最佳答案

您的问题是readdirSync不会输出完整路径。因此，当您列出子目录文件并使用lstatSync时，会丢失子目录路径，因此这就是为什么出现错误：ENOENT: no such file or directory, lstat 'Neuer Ordner 3'的原因，因为该文件不存在。

您所要做的就是使用path.join

const path = require('path');

/* ... */

organizeMembers() {
  this.files = [], this.directories = [];
  for (var member of this.directory) {

    const filepath = path.join(this.path, member);

    // No need to use fs.lstat twice.
    const stat = fs.lstatSync(filepath);

    if (stat.isFile())
      this.files.push(new File(member, this));
    else if (stat.isDirectory())
      this.directories.push(new Directory(filepath, this.pathLevel + 1));
  }
}

您可以删除formatedPath函数，而取而代之的是path.join。

关于javascript - Node js:识别目录成员类型时出错，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/49908154/