var fs = require('fs');
fs.readFile('demofile.txt', 'utf8', function(err, data) {
if (err) throw err;
console.log(data);
});
您好！欢迎来到 demofile.txt
var fs = require('fs');
fs.readFile('demofile.txt', 'utf8', function(err, data) {
if (err) throw err;
console.log(data);
});