今天有一个爬虫挂了，测试发现报错： unable to verify the first certificate
这里给出一种有效解决方法，参考：https://www.reddit.com/r/node/comments/7vyc2q/cant_get_https_request_with_certificate_to_work/
参考：
strictSSL - if true, requires SSL certificates be valid. Note: to use your own certificate authority, you need to specify an agent that was created with that CA as an option.
https://www.npmjs.com/package/request
只需要在request中加入一个参数：
strictSSL: false
即可。