我想知道netty使用writeAndFlush发送报文后如何监听回写的报文呢(标签-Spring)

SpringBoot 整合netty实现modbus服务控制硬件
现在我发送报文查询设备状态,每次发送的报文是什么,回写的报文就是什么?
我想知道netty使用writeAndFlush发送报文后如何监听回写的报文呢?

// 指令发送
        ByteBuf buffer = Unpooled.buffer();
        log.info("开始发送报文:{}",Arrays.toString(msgBytes));
        buffer.writeBytes(msgBytes);
        channel.writeAndFlush(buffer).addListener((ChannelFutureListener) future -> {
            System.out.println(future);
            if (future.isSuccess()) {
                // 修改为合闸状态
                if (msgBytes.equals(msgBytes1)){
                    log.info("客户端:{},查询结果为合闸:{}",imei,Arrays.toString(msgBytes));
                    WlEquipmentConfig wlEquipmentConfig = new WlEquipmentConfig();
                    wlEquipmentConfig.setWlPumpState(0);
                    wlEquipmentConfig.setWlEquipmentImei(imei);
                    wlEquipmentConfigMapper.updateWlEquipmentConfigByIMEI(wlEquipmentConfig);
                }else if (msgBytes.equals(msgBytes2)){
                    log.info("客户端:{},查询结果为分闸:{}",imei,Arrays.toString(msgBytes));
                    WlEquipmentConfig wlEquipmentConfig = new WlEquipmentConfig();
                    wlEquipmentConfig.setWlPumpState(1);
                    wlEquipmentConfig.setWlEquipmentImei(imei);
                    wlEquipmentConfigMapper.updateWlEquipmentConfigByIMEI(wlEquipmentConfig);
                }
                log.info("客户端:{},查询结果为:{}",imei,Arrays.toString(msgBytes));

我现在好像就是发送的啥回写打印就是啥,netty如何监听到真正的设备响应报文呢?想请教一下

这个应该不是说通过 writeAndFlush() 方法后如何用监听器去监听服务端给你返回的数据,应该是说接收出站的数据,那么 netty 是由相应的出站接口 XxxOutBoundChannel 可以监听给你会写的数据(报文)