循环遍历文件夹Node.JS中的文件 [英] Looping through files in a folder Node.JS

问题描述

我正在尝试遍历并获取目录中的文件，但是我在实现它时遇到了一些麻烦。如何拉入多个文件，然后将它们移动到另一个文件夹？

I am trying to loop through and pick up files in a directory, but I have some trouble implementing it. How to pull in multiple files and then move them to another folder?

var dirname = 'C:/FolderwithFiles';
console.log("Going to get file info!");
fs.stat(dirname, function (err, stats) {
    if (err) {
        return console.error(err);
    }
    console.log(stats);
    console.log("Got file info successfully!");

    // Check file type
    console.log("isFile ? " + stats.isFile());
    console.log("isDirectory ? " + stats.isDirectory());
});

推荐答案

你想使用 fs.readdir 函数获取目录内容和 fs.rename 函数实际进行重命名。这两个函数都有同步版本，如果你需要等待它们完成后再运行代码。

You want to use the fs.readdir function to get the directory contents and the fs.rename function to actually do the renaming. Both these functions have synchronous versions if you need to wait for them to finishing before running the code afterwards.

我写了一个快速的脚本你所描述的。

I wrote a quick script that does what you described.

var fs = require('fs');
var path = require('path');
// In newer Node.js versions where process is already global this isn't necessary.
var process = require("process");

var moveFrom = "/home/mike/dev/node/sonar/moveme";
var moveTo = "/home/mike/dev/node/sonar/tome"

// Loop through all the files in the temp directory
fs.readdir(moveFrom, function (err, files) {
  if (err) {
    console.error("Could not list the directory.", err);
    process.exit(1);
  }

  files.forEach(function (file, index) {
    // Make one pass and make the file complete
    var fromPath = path.join(moveFrom, file);
    var toPath = path.join(moveTo, file);

    fs.stat(fromPath, function (error, stat) {
      if (error) {
        console.error("Error stating file.", error);
        return;
      }

      if (stat.isFile())
        console.log("'%s' is a file.", fromPath);
      else if (stat.isDirectory())
        console.log("'%s' is a directory.", fromPath);

      fs.rename(fromPath, toPath, function (error) {
        if (error) {
          console.error("File moving error.", error);
        } else {
          console.log("Moved file '%s' to '%s'.", fromPath, toPath);
        }
      });
    });
  });
});

在我的本地机器上测试。

Tested on my local machine.

node testme.js 
'/home/mike/dev/node/sonar/moveme/hello' is a file.
'/home/mike/dev/node/sonar/moveme/test' is a directory.
'/home/mike/dev/node/sonar/moveme/test2' is a directory.
'/home/mike/dev/node/sonar/moveme/test23' is a directory.
'/home/mike/dev/node/sonar/moveme/test234' is a directory.
Moved file '/home/mike/dev/node/sonar/moveme/hello' to '/home/mike/dev/node/sonar/tome/hello'.
Moved file '/home/mike/dev/node/sonar/moveme/test' to '/home/mike/dev/node/sonar/tome/test'.
Moved file '/home/mike/dev/node/sonar/moveme/test2' to '/home/mike/dev/node/sonar/tome/test2'.
Moved file '/home/mike/dev/node/sonar/moveme/test23' to '/home/mike/dev/node/sonar/tome/test23'.
Moved file '/home/mike/dev/node/sonar/moveme/test234' to '/home/mike/dev/node/sonar/tome/test234'.

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