我想加载页面时不带头让我登录。
登录后,我想隐藏它,打开无头,让它做它必须做的事情。
启动后如何打开/关闭无头电脑?
答案 0 :(得分:1)
您无法在飞行中无头切换。但是您可以根据需要使用AJAX requests和cookies共享登录名。
我们将创建一个简单的类来保持代码的干净(或者我相信这些类型的工作,因为它们通常会在以后变得很大)。但是,您可以在没有所有这些复杂性的情况下执行此操作。另外,请确保Cookie已序列化。不要将数组传递给setCookie函数。
将有三个主要功能。
init()
创建页面对象。主要是为了确保无头和头顶版本具有相似的浏览样式,相同的用户代理等。注意,我没有提供用于设置用户代理的代码,它只是用来显示概念的。
async init(headless) {
const browser = await puppeteer.launch({
headless
});
const page = await browser.newPage();
// do more page stuff before loading, ie: user agent and so on
return {
page,
browser
};
}
getLoginCookies()
显示如何从浏览器获取cookie的示例。
// will take care of our login using headful
async getLoginCookies() {
const {
page,
browser
} = await this.init(false)
// asume we load page and login here using some method
// and the website sets some cookie
await page.goto('http://httpbin.org/cookies/set/authenticated/true')
// store the cookie somewhere
this.cookies = await page.cookies() // the cookies are collected as array
// close the page and browser, we are done with this
await page.close();
await browser.close();
return true;
}
如果您可以手动提供cookie,则不需要此功能。您可以使用EditThisCookie或任何cookie编辑工具。您将获得该网站的所有cookie阵列。这是您可以执行的操作,
useHeadless()
显示如何向浏览器设置cookie的示例。
// continue with our normal headless stuff
async useHeadless() {
const {
page,
browser
} = await this.init(true)
// we set all cookies we got previously
await page.setCookie(...this.cookies) // three dots represents spread syntax. The cookies are contained in a array.
// verify the cookies are working properly
await page.goto('http://httpbin.org/cookies');
const content = await page.$eval('body', e => e.innerText)
console.log(content)
// do other stuff
// close the page and browser, we are done with this
// deduplicate this however you like
await page.close();
await browser.close();
return true;
}
// let's use this
(async () => {
const loginTester = new myAwesomePuppeteer()
await loginTester.getLoginCookies()
await loginTester.useHeadless()
})()
遍历代码以更好地理解它。全部都评论了。
const puppeteer = require('puppeteer');
class myAwesomePuppeteer {
constructor() {
// keeps the cookies on the class scope
this.cookies;
}
// creates a browser instance and applies all kind of setup
async init(headless) {
const browser = await puppeteer.launch({
headless
});
const page = await browser.newPage();
// do more page stuff before loading, ie: user agent and so on
return {
page,
browser
};
}
// will take care of our login using headful
async getLoginCookies() {
const {
page,
browser
} = await this.init(false)
// asume we load page and login here using some method
// and the website sets some cookie
await page.goto('http://httpbin.org/cookies/set/authenticated/true')
// store the cookie somewhere
this.cookies = await page.cookies()
// close the page and browser, we are done with this
await page.close();
await browser.close();
return true;
}
// continue with our normal headless stuff
async useHeadless() {
const {
page,
browser
} = await this.init(true)
// we set all cookies we got previously
await page.setCookie(...this.cookies)
// verify the cookies are working properly
await page.goto('http://httpbin.org/cookies');
const content = await page.$eval('body', e => e.innerText)
console.log(content)
// do other stuff
// close the page and browser, we are done with this
// deduplicate this however you like
await page.close();
await browser.close();
return true;
}
}
// let's use this
(async () => {
const loginTester = new myAwesomePuppeteer()
await loginTester.getLoginCookies()
await loginTester.useHeadless()
})()
这是结果,
➜ node app.js
{
"cookies": {
"authenticated": "true"
}
}
简而言之,