string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B7%98%E6%B0%94%E5%80%BC%E6%9C%89%E4%B8%8A%E9%99%90%E5%90%97 => Failed to connect to 101.89.117.144 port 38005: Connection refused"
淘气值有上限吗
