string(239) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%94%A8%E7%B9%81%E8%8A%B1%E4%BC%BC%E9%94%A6%E5%86%99%E4%B8%80%E4%B8%AA%E6%83%85%E6%99%AF => Received HTTP code 403 from proxy after CONNECT"
用繁花似锦写一个情景
