SpringBoot Webflux创建TCP/UDP server并使用handler解析数据

目录

• 1.pom依赖
• 引用spring-boot-starter-webflux依赖
• 2.创建UDP/TCPServer
• 3.数据解析handler（具体解析根据协议来）
• 解析UDP数据handler
• 解析TCP数据handler
• 4.测试工具
• 推荐使用SocketTool调试TCP/UDP协议

1.pom依赖

引用spring-boot-starter-webflux依赖

	4.0.0
	
		org.springframework.boot
		spring-boot-starter-parent
		2.1.3.RELEASE
		 
	
	com.example
	demo
	0.0.1-SNAPSHOT
	demo
	Demo project for Spring Boot
	
		1.8
	
	
		
			org.springframework.boot
			spring-boot-starter
		
		
			org.springframework.boot
			spring-boot-starter-test
			test
		
		
			org.springframework.boot
			spring-boot-starter-webflux
		
	
	
		
			
				org.springframework.boot
				spring-boot-maven-plugin
			
		
	

2.创建UDP/TCP Server

package com.example.demo;
import com.example.demo.handler.TcpDecoderHanlder;
import com.example.demo.handler.UdpDecoderHanlder;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import reactor.core.publisher.Flux;
import reactor.netty.tcp.TcpServer;
import reactor.netty.udp.UdpServer;
import java.time.Duration;
@SpringBootApplication
public class DemoApplication {
	public static void main(String[] args) {
		SpringApplication.run(DemoApplication.class, args);
	}
	@Bean
	CommandLineRunner serverRunner(UdpDecoderHandler udpDecoderHandler, TcpDecoderHandler tcpDecoderHandler) {
		return strings -> {
			createUdpServer(udpDecoderHandler);
			createTcpServer(tcpDecoderHandler);
		};
	}
	/**
	 * 创建UDP Server
	 * @param udpDecoderHanlder： 解析UDP Client上报数据handler
	 */
	private void createUdpServer(UdpDecoderHandler udpDecoderHandler) {
		UdpServer.create()
				.handle((in,out) -> {
					in.receive()
							.asByteArray()
							.subscribe();
					return Flux.never();
				})
				.port(8888)
				.doOnBound(conn -> conn.addHandlerLast("decoder",udpDecoderHandler)) //可以添加多个handler
				.bindNow(Duration.ofSeconds(30));
	}
	/**
	 * 创建TCP Server
	 * @param tcpDecoderHanlder： 解析TCP Client上报数据的handler
	 */
	private void createTcpServer(TcpDecoderHandler tcpDecoderHandler) {
		TcpServer.create()
				.handle((in,out) -> {
					in.receive()
							.asByteArray()
							.subscribe();
					return Flux.never();
				})
				.doOnConnection(conn ->
						conn.addHandler(tcpDecoderHandler)) //实例只写了如何添加handler,可添加delimiter，tcp生命周期，decoder，encoder等handler
				.port(9999)
				.bindNow();
	}
}

3.数据解析handler（具体解析根据协议来）

解析UDP数据handler

package com.example.demo.handler;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.socket.DatagramPacket;
import io.netty.handler.codec.MessageToMessageDecoder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class UdpDecoderHandler extends MessageToMessageDecoder  {
    private static final Logger LOGGER = LoggerFactory.getLogger(TcpDecoderHandler.class);
    @Override
    protected void decode(ChannelHandlerContext channelHandlerContext, DatagramPacket byteBuf, List