string(232) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=wap%E6%98%AF%E4%BB%80%E4%B9%88%E7%BD%91%E7%BB%9C%E7%94%A8%E8%AF%AD => Failed to connect to 14.18.117.71 port 38220: Connection refused"
wap是什么网络用语
