哪位朋友能给个详细的教程呢？ 其实，有时候需求很简单，类似于： 使用request模块，写个getHtml(url)函数，返回一个网页的html源码。 然后每次调用的时候，我只需要简单的 var html=getHtml(‘http://www.baidu.com’); 而不用再写一长串的回调。
类似这样的需求，应该怎么用async/await，实现？
‘use strict’;
var express = require(‘express’); var router = express.Router(); var request = require(‘request’);
/* GET home page. */ router.get(’/’, async function(req, res, next) { res.render(‘index’, { title: ‘Express’ }); console.log(’------------------------------------get start-------------------------------------------\n’); var html=await getHtml(‘http://www.baidu.com’); console.log(html); console.log(’---------------------------------------------get end-------------------------------------------\n’); });
var getHtml = function (url) { return new Promise(function (resolve, reject) { request(url, function (error, response, body) { if (!error && response.statusCode == 200) { resolve(body); } else { resolve(‘error’); } }) }) }; module.exports = router;
var request = require('request');
var getBody = function (url) {
return new Promise((resolve, reject)=> {
request({
url: url,
timeout: 30000,
headers: {
'User-Agent': 'Mozilla/5.0 (Arch Linux kernel 4.6.5) AppleWebKit/537.36 (KHTML, like Gecko) Maxthon/4.0 Chrome/39.0.2146.0 Safari/537.36'
}
})
})
};
(async function(){
let body =await request('http://baidu.com');
console.log(body);
})();
