javascript - 麻烦 - Node js 将文件从文件夹 x 移动到文件夹 y

Question

我正在尝试使用node.js将文件从文件夹currentFolder(项目的根)/node_modules/mime/移动到currentFolder(项目的根)/files/ 但我不断收到此错误:

events.js:85
      throw er; // Unhandled 'error' event
            ^
Error: EISDIR, open 'files/'
    at Error (native)

这是我到目前为止所拥有的。目前它正在做的是循环遍历我指定的目录中的每个文件夹，并打印出所读取的每个文件夹的文件类型。但我在移动文件时遇到问题，我不断收到上面指定的错误。我当前的代码如下 -

var mime = require('mime');
var fs = require('fs');
var dest = fs.createWriteStream('files/');
var source; 
var i = 0;

// General function - Loop through files in directory X and COPY AND PASTE FILES FROM X to Y
var dive = function (dir, action) {
  // Assert that it's a function
  if (typeof action !== "function")
    action = function (error, file) { };

  // Read the directory
  fs.readdir(dir, function (err, list) {
    // Return the error if something went wrong
    if (err)
      return action(err);


    // Loop through file in list
    list.forEach(function (file) {
    console.log(mime.lookup(dir + "/" + file));

      // Full path of that file
      path = dir + "/" + file;
      source = fs.createReadStream(path);
      source.pipe(dest + '/'+i);
      console.log("Moved");
      i++;

        source.on('end', function() { /* copied */ });
        source.on('error', function(err) { /* error */ });

    });
  });
};

dive("node_modules/mime");

Answer 1

您可以在文件(而不是目录)上createWriteStream。每个目标文件都需要单独的流。

所以代替这个:

  source = fs.createReadStream(path);
  source.pipe(dest + '/'+i);

你需要这个:

  source = fs.createReadStream(path);
  var destFile = fs.createWriteStream('files/'+i);
  source.pipe(destFile);