string(250) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=etf%E7%9A%84%E8%B5%84%E9%87%91%E4%BC%9A%E4%B9%B0%E5%85%A5%E8%82%A1%E7%A5%A8%E5%90%97 => Failed to connect to 14.116.215.7 port 38230: Connection refused"
etf的资金会买入股票吗
