string(303) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E5%AE%89%E6%A1%88%E4%BE%8B%E9%A2%98%E9%97%AE%E7%AD%94%E9%A2%98%E6%B2%A1%E6%9C%89%E6%80%9D%E8%B7%AF%E6%80%8E%E4%B9%88%E5%8A%9E => Failed to connect to 101.89.159.206 port 38087: Connection refused"
注安案例题问答题没有思路怎么办
