string(292) "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%E6%95%B0%E6%8D%AE%E7%9A%84%E6%96%B9%E6%B3%95%E6%98%AF%E6%AD%A3%E7%A1%AE%E7%9A%84%E5%91%A2 => Failed to connect to 14.18.117.71 port 38133: Connection refused"
怎样收集数据的方法是正确的呢
