string(232) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=sop%E6%A8%A1%E5%BC%8F%E7%9A%84%E6%89%A3%E7%82%B9%E6%96%B9%E6%B3%95 => Failed to connect to 61.171.74.35 port 38027: Connection refused"
sop模式的扣点方法
