java利用isapi协议如何实现客户端发送RTSP DESCRIBE请求海康nvr，代码怎么写

要实现客户端发送RTSP DESCRIBE请求海康nvr，需要使用Java的ISAPI协议，具体代码如下：String username = "username"; String password = "password"; String url = "rtsp://nvr_ip:554/channel=1"; // Create an instance of the RTSPConnection class RTSPConnection conn = new RTSPConnection(); // Connect to the NVR conn.connect(url, username