string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BB%A3%E8%B4%AD%E6%98%AF%E6%80%8E%E4%B9%88%E4%B9%B0%E5%88%B0%E4%BD%8E%E4%BB%B7%E7%9A%84%E5%95%86%E5%93%81 => Failed to connect to 101.89.117.144 port 38076: Connection refused"
代购是怎么买到低价的商品
