string(250) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=a%E8%82%A1%E4%BA%A4%E6%98%93%E6%89%8B%E7%BB%AD%E8%B4%B9%E5%A4%AA%E9%AB%98%E4%BA%86 => Failed to connect to 101.89.117.144 port 38022: Connection refused"
a股交易手续费太高了
