javascript - 如何在nodejs中使用fs从多个目录获取文件名？

Question

一旦我有了进一步的代码实现，我想从所有目录中获取文件信息，但我被困在这里并收到粘贴有问题的错误知道下面的代码中实现了什么错误吗？

定时任务

var fs = require('fs');
var path = require('path');
var async = require('async');
var directories = ['./logs/dit', './logs/st','./logs/uat']
function cronJob() {
directories.forEach(function(dir){
    var files = fs.readdir(dir);
    async.eachSeries(files, function(file,callback) {
            var filePath = path.join(dirPath, file);
            var fileInfo = {};
            fs.stat(filePath, function(err, stats) {
               if (err) {
                 console.info("File doesn't");
                } else {
                 fileInfo.fileDate = stats.birthtime;
                 fileInfo.filename = file;
                 console.log(fileInfo);
//                 compareDates(fileInfo,filePath);
//                 callback();
               }
            });
        });
})

}

cronJob();

错误

s\Ulog-0\ulog\app\serverfiles\logs\dit'
  at Error (native)
  at Object.fs.readdirSync (fs.js:808:18)
  at C:\Users\WebstormProjects\Ulog-0\ulog\app\serverfiles\cronJob
20
  at Array.forEach (native)
  at cronJob (C:\Users\WebstormProjects\Ulog-0\ulog\app\serverfile
obs.js:7:13)
  at Object.<anonymous> (C:\Users\\WebstormProjects\Ulog-0\ulog\app

Answer 1

readdir是异步的，所以你需要等待它的回调来执行进一步的操作。

很难知道到底是什么问题，所以我包含了日志语句。

编辑

var fs = require('fs');
var path = require('path');
var async = require('async');
var directories = ['/../../logs/dit', '/../../logs/st', '/../../logs/uat'];

// loop through each directory
async.eachSeries(directories, function (dir, cb1) {
    var dir = __dirname + dir;
    console.log('reading', dir);
    // get files for the directory
    fs.readdir(dir, function (err, files) {
        if (err) return cb1(err);

        // loop through each file
        async.eachSeries(files, function (file, cb2) {
            var filePath = path.resolve(dir + '/' + file);
            // get info for the file
            fs.stat(filePath, function (err, stats) {
                if (err) return cb2(err);
                var fileInfo = { fileDate: stats.birthtime, filename: file };
                console.log('fileInfo', fileInfo);
                compareDates(fileInfo, filePath);
                cb2(null, fileInfo);
            });
        }, cb1);

    });
}, function (err, fileInfos) {
    if (err) {
        console.info('error', err);
        return;     
    }
    // when you're done reading all the files, do something...
});