string(321) "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%E9%87%87%E7%94%A8%E5%91%8A%E7%9F%A5%E6%89%BF%E8%AF%BA%E5%88%B6%E6%96%B9%E5%BC%8F%E5%92%8C%E4%B8%8D%E9%87%87%E7%94%A8%E5%8C%BA%E5%88%AB => Failed to connect to 101.89.159.206 port 38087: Connection refused"
注安采用告知承诺制方式和不采用区别
