string(312) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%AC%E4%B8%9C%E4%B8%BA%E8%B4%AD%E7%89%A9%E8%80%85%E6%8F%90%E4%BE%9B%E4%BA%86%E4%BB%80%E4%B9%88%E5%8A%9F%E8%83%BD%E5%92%8C%E6%9C%8D%E5%8A%A1 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
京东为购物者提供了什么功能和服务
