string(240) "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%E4%B8%BE%E4%BE%8B%E5%9B%BE => Failed to connect to 101.89.117.144 port 38076: Connection refused"
数据可视化举例图
