如何从上次修改的日期筛选文件

Question

我需要知道如何才能提到"过滤"的文件，例如每天的文件：2到12。

const fs = require('fs');

const testFolder = 'C:/Users/duff/Downloads/xmlpath/';

fs.readdirSync(testFolder).forEach(file => {  //Reading files from folder

        fs.stat(testFolder+file,'utf8', function(err,data){

      console.log(data.mtime); // print the last modified date
    }
    );
  });

我已经尝试与此代码，但我得到所有的文件日期没有过滤他们

文件日期的结果

Answer 1

这就是我保存文件和检索最终文件时使用的一些附加内容的方式：

router.post("/download", function (req, res) {
  var yourscript = exec("./export.sh", (error, stdout, stderr) => {
    console.log(stdout);
    console.log(stderr);
  });

  function downloadLatestFile() {
    const dirPath = "/Users/tarekhabche/Desktop/awsTest/reports";
    const lastFile = JSON.stringify(getMostRecentFile(dirPath));
    fileDate = lastFile.substr(14, 19);
    console.log(fileDate);
    const fileToDownload = `reports/info.${fileDate}.csv`;
    console.log(fileToDownload);
    res.download(fileToDownload);
  }
  setTimeout(function () {
    downloadLatestFile();
  }, 1000);
});

const getMostRecentFile = (dir) => {
  const files = orderRecentFiles(dir);
  return files.length ? files[0] : undefined;
};

const orderRecentFiles = (dir) => {
  return fs
    .readdirSync(dir)
    .filter((file) => fs.lstatSync(path.join(dir, file)).isFile())
    .map((file) => ({ file, mtime: fs.lstatSync(path.join(dir, file)).mtime }))
    .sort((a, b) => b.mtime.getTime() - a.mtime.getTime());
};

const dirPath = "reports";
getMostRecentFile(dirPath);

Answer 2

所以我认为你要做的是提供一个日期范围，并返回该范围内的文件。

我把时间去掉然后和日期做比较

const fs = require('fs')

const testFolder = './test'

const parseDate = timestamp => new Date(timestamp).toISOString().slice(0, 10)

const handler = async (f, t) => {
    const startDate = parseDate(f)
    const endDate = parseDate(t)

    const timestamp = file => {
        return new Promise((resolve, reject) => {
            fs.stat(`${testFolder}/${file}`, 'utf8', (err, data) => {
                if (err) return reject(err)
                return resolve({ filename: `${testFolder}/${file}`, date: parseDate(data.mtime) })
            })
        })
    }

    const timestamps = await Promise.all(fs.readdirSync(testFolder).map(timestamp))

    return timestamps.filter(({ date }) => date >= startDate && date <= endDate)
}

handler('2020-04-01', '2020-04-10')

这将生成一个对象数组，如下所示

[ { filename: 'C:/Users/duff/Downloads/xmlpath/test1', date: '2020-04-09' },
  { filename: 'C:/Users/duff/Downloads/xmlpath/hello', date: '2020-04-09' },
  { filename: 'C:/Users/duff/Downloads/xmlpath/new', date: '2020-04-10' },
  { filename: 'C:/Users/duff/Downloads/xmlpath/yes', date: '2020-04-10' } ]