string(249) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%82%A1%E7%A5%A8%E5%89%8D%E5%8A%A0xd%E6%98%AF%E5%A5%BD%E6%98%AF%E5%9D%8F%E5%95%8A => Failed to connect to 14.18.117.71 port 38220: Connection refused"
股票前加xd是好是坏啊
