string(230) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%AE%80%E5%8D%95%E7%9A%84%E7%8E%AB%E7%91%B0%E8%8A%B1%E5%8C%85%E8%A3%85%E6%B3%95 => Received HTTP code 403 from proxy after CONNECT"
简单的玫瑰花包装法
