string(249) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BB%84%E7%BB%87%E7%BB%93%E6%9E%84%E5%9B%BE%E7%BB%98%E5%88%B6%E6%96%B9%E6%B3%95 => Failed to connect to 101.89.159.206 port 38100: Connection refused"
组织结构图绘制方法
