问题
I would like to scan the folder, but ignore all the folders/directories that are included in it. All I have in the (C:/folder/) are .txt files and other folders, I just want to scan the txt files, and ignore the folders.
app.get('/generatE', function (req, res) {
const logsFolder = 'C:/folder/';
fs.readdir(logsFolder, (err, files) => {
if (err) {
res.send("[empty]");
return;
}
var lines = [];
files.forEach(function(filename) {
var logFileLines = fs.readFileSync (logsFolder + filename, 'ascii').toString().split("\n");
logFileLines.forEach(function(logFileLine) {
if(logFileLine.match(/.*AUDIT*./)) {
lines.push(logFileLine+'\n');
}
})
})
回答1:
Use fs.readdir or fs.readdirSync method with options { withFileTypes: true }
and then do filtration using dirent.isFile (requires Node 10.10+).
Sync version
const fs = require('fs');
const dirents = fs.readdirSync(DIRECTORY_PATH, { withFileTypes: true });
const filesNames = dirents
.filter(dirent => dirent.isFile())
.map(dirent => dirent.name);
// use filesNames
Async version (with async
/await
, requires Node 11+)
import { promises as fs } from 'fs';
async function listFiles(directory) {
const dirents = await fs.readdir(directory, { withFileTypes: true });
return dirents
.filter(dirent => dirent.isFile())
.map(dirent => dirent.name);
}
Async version (with callbacks)
const fs = require('fs');
fs.readdir(DIRECTORY_PATH, { withFileTypes: true }, (err, dirents) => {
const filesNames = dirents
.filter(dirent => dirent.isFile())
.map(dirent => dirent.name);
// use filesNames
});
回答2:
Please See diraria's answer as it is more complete: my answer only works if ALL filenames contain a '.txt' extension.
why not just filter out files that end in ".txt"?
var fs = require("fs")
fs.readdirSync("./").filter(function(file) {
if(file.indexOf(".txt")>-1)console.log(file)
})
I should have added previously that to get an array of these files you need to return them to an array as shown below.
var fs = require("fs")
let text_file_array = fs.readdirSync("./").filter(function(file) {
if(file.indexOf(".txt")>-1) return file;
})
来源:https://stackoverflow.com/questions/41472161/fs-readdir-ignore-directories