string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%95%B0%E6%8D%AE%E5%8F%AF%E8%A7%86%E5%8C%96%E5%91%88%E7%8E%B0%E6%98%AF%E4%BB%80%E4%B9%88%E6%A0%B7%E7%9A%84 => Failed to connect to 125.88.227.171 port 38114: Connection refused"
数据可视化呈现是什么样的
