string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%80%8E%E4%B9%88%E7%9F%A5%E9%81%93%E7%8B%97%E7%8B%97%E8%82%9A%E5%AD%90%E9%87%8C%E6%9C%89%E8%99%AB%E5%AD%90 => Failed to connect to 14.116.215.7 port 38225: Connection refused"
怎么知道狗狗肚子里有虫子
