springboot工程基于netty-socketio的 web推送消息简单代码
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在本文中,我们将深入探讨如何在Spring Boot工程中利用Netty和Socket.IO构建一个Web消息推送服务。Spring Boot以其简洁的配置和强大的功能,成为Java开发者构建微服务的首选框架。而Netty作为高性能的异步事件驱动网络应用框架,常用于创建服务器和客户端应用程序,尤其适合实时通信。Socket.IO则是一种在浏览器和服务器之间实现实时双向通信的库,它兼容多种传输协议,如WebSocket、Long Polling等。 我们需要在Spring Boot项目中引入Netty-Socket.IO的相关依赖。在`pom.xml`文件中添加如下Maven依赖: ```xml <dependency> <groupId>com.corundumstudio.socketio</groupId> <artifactId>netty-socketio</artifactId> <version>1.7.13</version> </dependency> ``` 接下来,我们创建一个配置类`SocketIoConfig.java`,用于配置Socket.IO服务器: ```java @Configuration public class SocketIoConfig { @Value("${socketio.port:9000}") private int port; @Bean public ServerSocketIOServer serverSocketIOServer() { ServerSocketIOServer server = new ServerSocketIOServer(new InetSocketAddress(port)); server.setUpgradeProtocol(UpgradeProtocol.WEBSOCKET); return server; } } ``` 然后,我们需要创建一个处理客户端连接和消息的`SocketIOController.java`类: ```java @Controller public class SocketIOController { @Autowired private ServerSocketIOServer serverSocketIOServer; @OnConnect public void onConnect(SocketIOClient client) { System.out.println("Client connected: " + client.getSessionId()); serverSocketIOServer.addBroadcastEventListener(new MessageEventListener()); } @OnEvent(value = "message") public String onMessage(SocketIOClient client, String message) { System.out.println("Received message from client: " + message); // 广播消息到所有连接的客户端 serverSocketIOServer.getBroadcastOperations().sendEvent("response", message); return "Message received"; } @OnDisconnect public void onDisconnect(SocketIOClient client) { System.out.println("Client disconnected: " + client.getSessionId()); } } ``` 在这个控制器中,我们定义了`@OnConnect`、`@OnEvent`和`@OnDisconnect`注解的方法,分别对应客户端连接、接收到消息和断开连接时的处理逻辑。 对于前端部分,可以使用JavaScript的Socket.IO客户端库与后端进行通信。创建一个`index.html`文件,并引入Socket.IO的JavaScript库: ```html <!DOCTYPE html> <html> <head> <title>Socket.IO Test</title> <script src="https://cdn.socket.io/socket.io-1.4.5.js"></script> <script> var socket = io('http://localhost:9000'); socket.on('connect', function () { console.log('Connected!'); socket.emit('message', 'Hello from client'); }); socket.on('response', function (msg) { console.log('Server response:', msg); }); </script> </head> <body> <h1>Socket.IO Test</h1> </body> </html> ``` 这个简单的HTML页面在连接成功后向服务器发送一条消息,并监听服务器的响应。 启动Spring Boot应用,访问`index.html`,你将看到客户端和服务器之间的交互。这个例子展示了如何在Spring Boot项目中集成Netty-Socket.IO实现Web消息推送,以及如何处理连接、接收和发送消息。 通过这个基础,你可以进一步扩展这个服务,比如添加用户认证、实现更复杂的业务逻辑,或者为多个房间提供不同类型的推送消息。Spring Boot结合Netty-Socket.IO为开发实时Web应用提供了强大且灵活的工具。
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