string(225) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=word%E5%9C%A8%E9%A1%B5%E8%84%9A%E4%B8%AD%E8%AE%BE%E7%BD%AE%E9%A1%B5%E7%A0%81 => Received HTTP code 403 from proxy after CONNECT"
word在页脚中设置页码
