Springboot结合Netty对接硬件,实现主动发送报文和接受硬件报文(ModbusRTU或者TCP以及DTU)
在Spring Boot中结合Netty实现与硬件的通信,可以使用Netty的NioEventLoopGroup
和Bootstrap
来建立网络连接,并使用ChannelPipeline
来添加编解码器处理硬件发送的数据。
以下是一个简单的例子,展示了如何使用Netty在Spring Boot中实现主动发送数据包和接收数据包的功能。
import io.netty.bootstrap.Bootstrap;
import io.netty.channel.*;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import org.springframework.stereotype.Service;
@Service
public class HardwareCommunicationService {
private final EventLoopGroup group = new NioEventLoopGroup();
private Bootstrap bootstrap;
private Channel channel;
public HardwareCommunicationService() {
bootstrap = new Bootstrap();
bootstrap.group(group)
.channel(NioSocketChannel.class)
.handler(new ChannelInitializer<SocketChannel>() {
@Override
public void initChannel(SocketChannel ch) throws Exception {
ChannelPipeline pipeline = ch.pipeline();
// 添加编解码器,根据实际硬件协议进行添加
// 例如,如果是Modbus RTU,可以添加Modbus4J的编解码器
// pipeline.addLast("decoder", new ModbusFactory(...));
// pipeline.addLast("encoder", new ModbusFactory(...));
// 自定义处理器
pipeline.addLast(new HardwareMessageHandler());
}
});
// 连接硬件设备
connect("127.0.0.1", 8080);
}
public void connect(String host, int port) {
try {
channel = bootstrap.connect(host, port).sync().channel();
System.out.println("Connected to the hardware.");
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
e.printStackTrace();
}
}
public void sendDataToHardware(Object data) {
if (channel != null && channel.isActive()) {
channel.writeAndFlush(data).addListener(future -> {
if (future.isSuccess()) {
System.out.println("Data sent successfully.");
} else {
System.out.println("Failed to send data.");
future.cause().printStackTrace();
}
});
}
}
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