[英]How do I fix UnhandledPromiseRejectionWarning: Error: read ETIMEDOUT and UnhandledPromiseRejectionWarning: Error: write EPROTO errors
I am using axios and cheerio to do some web-scraping.我正在使用 axios 和cheerio 进行一些网络抓取。 I am pretty sure I am writing this for loop wrong.
我很确定我写这个for循环是错误的。 Something about making it async.
关于使其异步的一些事情。 But I recently started and I couldn't understand what that means.
但我最近开始,我不明白这意味着什么。 I might also be totally wrong.
我也可能完全错了。
for (let i = 0; i < list.length; i++) {
axios.get(list[i].link).then((res) => {
const $ = cheerio.load(res.data);
var name = $('.header').find('.itemprop').text()
$('.knownfor-title').each((i, el) => {
var movie = $(el).find('img').attr('src')
var title = $(el).find('img').attr('title')
var link = 'https://www.imdb.com' + $(el).find(".knownfor-title-role").find('a').attr('href')
var data = {
name,
movie,
title,
link
}
writeStream.write(`${name}, ${movie}, ${title}, ${link} \n` );
console.log(data)
})
})
}
And here is the errors I get这是我得到的错误
(node:5293) UnhandledPromiseRejectionWarning: Error: read ECONNRESET
at TLSWrap.onStreamRead (internal/stream_base_commons.js:205:27)
(node:5293) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 512)
(node:5293) UnhandledPromiseRejectionWarning: Error: read ETIMEDOUT
at TLSWrap.onStreamRead (internal/stream_base_commons.js:205:27)
(node:5293) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 420)
You get the point你明白了
This should be the syntax of your axios with.then() and.catch()这应该是您的 axios 的语法 with.then() and.catch()
const axios = require('axios');
// Make a request for a user with a given ID
axios.get('/user?ID=12345')
.then(function (response) {
// handle success
console.log(response);
})
.catch(function (error) {
// handle error
console.log(error);
})
.then(function () {
// always executed
});
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