string(285) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%80%9A%E8%BF%87%E5%BE%AE%E4%BF%A1%E6%AD%A5%E6%95%B0%E5%88%A4%E6%96%AD%E5%A4%9A%E5%B0%91%E4%B8%AA%E5%A5%BD%E5%8F%8B => Failed to connect to 101.89.117.144 port 38017: Connection refused"
通过微信步数判断多少个好友
