node实现爬虫---写入文件

node实现爬虫---写入文件

var express = require('express');
var app = express();
var request = require('request');
var cheerio = require('cheerio');
const fs=require('fs');

var hotelUrl='http://www.oraclebay.com/page.aspx?node=8&id=382&f=cn';
request({uri: hotelUrl}, function (err, response, body) {
    var filePath = __dirname + '/data/oraclebay.txt';

    $ = cheerio.load(body);
    var cat=$('.ny_rtext').text();

    if (fs.exists(filePath)) {
        fs.unlinkSync(filePath);

        console.log('Del file ' + filePath);
    }

    fs.writeFile(filePath, cat, 'utf8', function (err) {
        if (err) {
            throw err;
        }

        console.log('Save ' + filePath + ' ok~');
    });

    console.log('Fetch ' + hotelUrl + ' ok~');
});