string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%81%9A%E9%A3%9F%E5%93%81%E6%89%B9%E5%8F%91%E5%BA%94%E8%AF%A5%E6%80%8E%E6%A0%B7%E5%81%9A => Failed to connect to 14.18.117.71 port 38220: Connection refused"
做食品批发应该怎样做
