string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B9%B0%E5%AE%B6%E4%B8%8E%E5%8D%96%E5%AE%B6%E7%9A%84%E6%B3%95%E5%BE%8B%E5%85%B3%E7%B3%BB => Failed to connect to 14.18.117.71 port 38164: Connection refused"
买家与卖家的法律关系
