string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BB%BC%E5%90%88%E5%8D%95%E4%BB%B7%E4%B8%8D%E4%B8%80%E8%87%B4 => Failed to connect to 125.88.227.171 port 38062: Connection refused"
综合单价不一致
