string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%BF%AB%E7%9D%A1%E7%9D%80%E7%9A%84%E6%97%B6%E5%80%99%E7%AA%81%E7%84%B6%E6%B8%85%E9%86%92%E4%BA%86 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
快睡着的时候突然清醒了
