string(246) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%87%AA%E5%B7%B1%E5%88%9B%E9%80%A0%E4%B8%80%E4%B8%AA%E8%A3%85%E8%A2%8B%E6%9C%BA => Failed to connect to 14.18.46.51 port 38206: Connection refused"
自己创造一个装袋机
