springboot 实现tcp连接
时间: 2023-12-07 18:39:08 浏览: 37
在Spring Boot中,可以使用Netty框架来实现TCP连接。下面是一个简单的示例:
1.添加依赖
在pom.xml文件中添加以下依赖:
```xml
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-all</artifactId>
<version>4.1.25.Final</version>
</dependency>
```
2.创建TCP服务器
```java
@Component
public class TcpServer {
private static final Logger LOGGER = LoggerFactory.getLogger(TcpServer.class);
@Value("${tcp.port}")
private int port;
@Autowired
private TcpServerHandler tcpServerHandler;
@PostConstruct
public void start() throws InterruptedException {
EventLoopGroup bossGroup = new NioEventLoopGroup();
EventLoopGroup workerGroup = new NioEventLoopGroup();
try {
ServerBootstrap serverBootstrap = new ServerBootstrap();
serverBootstrap.group(bossGroup, workerGroup)
.channel(NioServerSocketChannel.class)
.option(ChannelOption.SO_BACKLOG, 128)
.childOption(ChannelOption.SO_KEEPALIVE, true)
.childHandler(new ChannelInitializer<SocketChannel>() {
@Override
public void initChannel(SocketChannel ch) throws Exception {
ch.pipeline().addLast(tcpServerHandler);
}
});
ChannelFuture channelFuture = serverBootstrap.bind(port).sync();
LOGGER.info("TCP服务器已启动,监听端口:{}", port);
channelFuture.channel().closeFuture().sync();
} finally {
workerGroup.shutdownGracefully();
bossGroup.shutdownGracefully();
}
}
}
```
3.创建TCP服务器处理程序
```java
@Component
@ChannelHandler.Sharable
public class TcpServerHandler extends ChannelInboundHandlerAdapter {
private static final Logger LOGGER = LoggerFactory.getLogger(TcpServerHandler.class);
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
ByteBuf byteBuf = (ByteBuf) msg;
try {
byte[] bytes = new byte[byteBuf.readableBytes()];
byteBuf.getBytes(0, bytes);
String message = new String(bytes, Charset.forName("UTF-8"));
LOGGER.info("接收到消息:{}", message);
// TODO 处理消息
} finally {
byteBuf.release();
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
LOGGER.error("TCP服务器发生异常:", cause);
ctx.close();
}
}
```
4.配置端口号
在application.properties文件中添加以下配置:
```
tcp.port=8888
```
以上代码实现了一个简单的TCP服务器,可以接收客户端发送的消息并进行处理。需要注意的是,这只是一个示例,实际应用中需要根据具体需求进行修改和完善。