string(240) "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%E7%AD%94%E9%A2%98%E6%A8%A1%E6%9D%BF => Failed to connect to 101.89.159.206 port 38100: Connection refused"
注安案例答题模板
