string(233) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%A1%BA%E4%B8%B022%E5%85%83%E5%92%8C18%E5%85%83%E5%8C%BA%E5%88%AB => Failed to connect to 14.18.117.71 port 38093: Connection refused"
顺丰22元和18元区别
