Puppeteer：从网站获取 localStorage

Question

我需要使用 Puppeteer 获取网站保存的所有数据：cookies 和 localStorage（例如登录后）。我已阅读所有 Puppeteer 文档，但找不到有关 localStorage 的任何信息。

我可以获取 cookie，但我不知道如何获取 localStorage。例如：

const puppeteer = require('puppeteer');

(async () => {
  const browser = await puppeteer.launch()
  const page = await browser.newPage()
  await page.goto('https://www.twitter.com/')

  //
  // code for login
  //

  const returnedCookie = await page.cookies();  
  console.log(returnedCookie)
  // const localStorage = ??
  // console.log(localStorage)

  await browser.close()
})()

Answer 1

我找到了方法：

const puppeteer = require('puppeteer');

(async () => {
  const browser = await puppeteer.launch()
  const page = await browser.newPage()
  await page.goto('https://www.twitter.com/')

  //
  // code for login
  //

  const returnedCookie = await page.cookies();  
  console.log(returnedCookie)

  await page.waitFor( 10000 );
  const localStorageData = await page.evaluate(() => {
    let json = {};
    for (let i = 0; i < localStorage.length; i++) {
      const key = localStorage.key(i);
      json[key] = localStorage.getItem(key);
    }
    return json;
  });

  console.log(localStorageData)

  await browser.close()
})()

Answer 2

对我有用的更简单的方法

const localStorage = await page.evaluate(() => Object.assign({}, window.localStorage));