string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B9%8C%E5%90%88%E4%B9%8B%E4%BC%97%E5%95%A5%E6%84%8F%E6%80%9D%E5%95%8A => Failed to connect to 61.171.74.35 port 38027: Connection refused"
乌合之众啥意思啊
