string(266) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BD%91%E4%B8%8A%E5%92%8C%E5%AE%9E%E4%BD%93%E5%BA%97%E7%9A%84%E4%BB%B7%E6%A0%BC%E5%B7%AE%E8%B7%9D => Failed to connect to 101.89.120.29 port 38025: Connection refused"
网上和实体店的价格差距
