string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%93%89%E5%9F%8E%E6%98%AF%E5%93%AA%E4%B8%AA%E5%9F%8E%E5%B8%82%E5%91%A2 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
蓉城是哪个城市呢
