string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B7%98%E5%AE%9D%E4%B8%80%E4%BB%B6%E4%BB%A3%E5%8F%91%E7%9A%84%E6%93%8D%E4%BD%9C%E6%B5%81%E7%A8%8B => Failed to connect to 14.18.117.71 port 38164: Connection refused"
淘宝一件代发的操作流程
