string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%94%9F%E8%8F%9C%E7%A7%8D%E7%B1%BB%E5%8F%8A%E5%90%8D%E7%A7%B0 => Failed to connect to 101.89.159.206 port 38187: Connection refused"
生菜种类及名称
