string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BE%BF%E5%88%A9%E5%BA%97%E4%BA%A7%E5%93%81%E7%A7%8D%E7%B1%BB%E5%88%86%E6%9E%90%E8%A1%A8 => Failed to connect to 125.88.227.171 port 38114: Connection refused"
便利店产品种类分析表
