string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%A2%85%E4%B8%96%E5%BC%BA%E4%B8%8D%E8%AE%B2%E4%B8%80%E5%BB%BA%E4%BA%86 => Failed to connect to 14.18.117.71 port 38093: Connection refused"
梅世强不讲一建了
