调用微信小程序api出现超时，有人知道吗，在线等，急急急！

org.springframework.web.client.ResourceAccessException: I/O error on POST request for "https://api.weixin.qq.com/wxa/getwxacodeunlimit": No route to host (Host unreachable); nested exception is java.net.NoRouteToHostException: No route to host (Host unreachable)