string(267) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%A1%B5%E8%84%9A%E9%A1%B5%E7%A0%81%E8%B5%B7%E5%A7%8B%E9%A1%B5%E7%A0%81%E5%80%BC%E8%AE%BE%E7%BD%AE => Failed to connect to 101.89.143.195 port 38109: Connection refused"
页脚页码起始页码值设置
