string(239) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%8C%E7%BB%B4%E7%A0%81%E7%BC%96%E7%A0%81%E6%80%8E%E4%B9%88%E7%9C%8B => Failed to connect to 101.91.112.32 port 38162: Connection refused"
二维码编码怎么看
