string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%AB%98%E6%A0%A1%E5%9B%BE%E5%83%8F%E4%BF%A1%E6%81%AF%E9%87%87%E9%9B%86%E7%BD%91%E5%AE%98%E7%BD%91 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
高校图像信息采集网官网
