string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BD%91%E8%B4%AD%E6%AF%94%E5%AE%9E%E4%BD%93%E5%BA%97%E8%B4%B5%E4%BA%86 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
网购比实体店贵了
