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Puppeteer 异常处理

 5 years ago
source link: http://jartto.wang/2018/10/23/puppeteerjs/?amp%3Butm_medium=referral
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从一个生成 PDF 的需求中接触到了 Puppeteer ,随着使用场景的深入,异常问题也越发难以处理。索性纪录一下摸索过程,供新手参考学习。

一、Chromium revision is not downloaded

UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): Error: Chromium revision is not downloaded. Run “npm install” or “yarn install”

遇到这个问题,说明你并没有成功下载 Chromium

二、Unhandled promise rejection

需要使用 catch 处理异常

三、spawn EACCES

没有权限,需要执行:

sudo chmod -R a+rwx chromium/Chromium.app

四、PrintToPDF is not implemented

https://github.com/GoogleChrome/puppeteer/issues/576

五、生成 PDF 乱码问题

小技巧:如果你发现无头打印异常,可以将设置改掉 headless: false ,,通过调试工具打开。

六、在 Docker中使用

https://www.meiwen.com.cn/subject/xkwsbftx.html

七、更改默认视口

await page.setViewport({width: 1024, height: 880});

八、设置 cookie

const COOKS =[
  {
  'domain': 'jartto.wang',
  'name': 'user',
  'value': 'jartto',
  }
]

await page.setCookie(...COOKS);

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