string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%80%8E%E6%A0%B7%E6%94%B6%E9%9B%86%E5%A4%A7%E6%95%B0%E6%8D%AE => Failed to connect to 101.89.117.144 port 38208: Connection refused"
怎样收集大数据
