string(236) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=fresh%E9%BB%91%E7%BD%90%E5%92%8C%E7%99%BD%E7%BD%90%E7%94%A8%E6%B3%95 => Failed to connect to 101.89.117.144 port 38056: Connection refused"
fresh黑罐和白罐用法
