public static String getIpPort(String ip, int port) {
		if (ip == null) {
			return null;
		}
		return ip.concat(":").concat(String.valueOf(port));
	}
@param ip
@param port
@return ip:port
larkmidtable-web/larkmt-rpc/src/main/java/com/larkmidtable/rpc/util/IpUtil.java