string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BB%A5%E5%90%8E%E5%90%84%E7%A7%8D%E4%B8%8D%E6%98%AF%E9%93%81%E9%A5%AD%E7%A2%97%E4%BA%86 => Failed to connect to 14.18.117.71 port 38093: Connection refused"
以后各种不是铁饭碗了
