string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%A4%E6%98%93%E4%B8%80%E4%B8%87%E5%85%83%E8%82%A1%E7%A5%A8%E7%9A%84%E8%B4%B9%E7%94%A8 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
交易一万元股票的费用
