Web UI自动化框架-Puppeteer

npm I puppeteer
# or "yarn add puppeteer"

HTTP_PROXY，HTTPS_PROXY，NO_PROXY-定义用于下载和运行Chromium的HTTP代理设置。
PUPPETEER_SKIP_CHROMIUM_DOWNLOAD-在安装步骤中请勿下载捆绑的Chromium。
PUPPETEER_DOWNLOAD_HOST-覆盖用于下载Chromium的URL的主机部分
PUPPETEER_CHROMIUM_REVISION-指定您希望Puppeteer使用的特定版本的Chromium。
PUPPETEER_EXECUTABLE_PATH-指定要在puppeteer.launch中使用的可执行路径。

$ npm install puppeteer --save

> puppeteer@3.1.0 install /Users/wangpingyang/Program/puppeteer2e/node_modules/puppeteer
> node install.js

(node:42761) ExperimentalWarning: The fs.promises API is experimental
ERROR: Failed to set up Chromium r756035! Set "PUPPETEER_SKIP_DOWNLOAD" env variable to skip download.
{ Error: read ECONNRESET
    at TLSWrap.onStreamRead (internal/stream_base_commons.js:111:27)
  -- ASYNC --
    at BrowserFetcher.<anonymous> (/Users/wangpingyang/Program/puppeteer2e/node_modules/puppeteer/lib/helper.js:94:19)
    at fetchBinary (/Users/wangpingyang/Program/puppeteer2e/node_modules/puppeteer/install.js:148:8)
    at download (/Users/wangpingyang/Program/puppeteer2e/node_modules/puppeteer/install.js:54:9) errno: 'ECONNRESET', code: 'ECONNRESET', syscall: 'read' }
npm WARN ws@7.3.0 requires a peer of bufferutil@^4.0.1 but none is installed. You must install peer dependencies yourself.
npm WARN ws@7.3.0 requires a peer of utf-8-validate@^5.0.2 but none is installed. You must install peer dependencies yourself.
npm WARN puppeteer2e@1.0.0 No description
npm WARN puppeteer2e@1.0.0 No repository field.

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! puppeteer@3.1.0 install: `node install.js`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the puppeteer@3.1.0 install script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/wangpingyang/.npm/_logs/2020-05-23T07_29_44_741Z-debug.log

$ npm install puppeteer@2.1.1 --save

> puppeteer@2.1.1 install /Users/wangpingyang/Program/puppeteer2e/node_modules/puppeteer
> node install.js

Downloading Chromium r722234 - 116.4 Mb [====================] 100% 0.0s
Chromium downloaded to /Users/wangpingyang/Program/puppeteer2e/node_modules/puppeteer/.local-chromium/mac-722234
npm notice created a lockfile as package-lock.json. You should commit this file.
npm WARN puppeteer2e@1.0.0 No description
npm WARN puppeteer2e@1.0.0 No repository field.

+ puppeteer@2.1.1
added 44 packages from 26 contributors in 221.508s

npm i puppeteer-core
# or "yarn add puppeteer-core"

const puppeteer = require('puppeteer');

(async () => {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  await page.goto('https://zhaoqize.github.io/puppeteer-api-zh_CN/');
  await page.screenshot({path: 'example.png'});

  await browser.close();
})();