基于Netty实现的netty-socketio实现WebSocket

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介绍

netty-socketio是socket.io使用Java语言基于Netty网络库编写的WebSocket库.功能非常强大，简单易用，稳定可靠.

    com.corundumstudio.socketio
    netty-socketio
    1.7.14

后端使用Demo

1.配置SocketIOServer

@Value("${my.server.host}")
private String host;
@Value("${my.server.port}")
private Integer port;

@Bean
public SocketIOServer socketIOServer() {
    Configuration config = new Configuration();
    config.setOrigin(null);   // 注意如果开放跨域设置，需要设置为null而不是"*"
    config.setPort(this.port);
    config.setSocketConfig(new SocketConfig());
    config.setWorkerThreads(100);
    config.setAuthorizationListener(handshakeData -> true);
    final SocketIOServer server = new SocketIOServer(config);
    server.start();
    return server;

}

@Bean
public SpringAnnotationScanner springAnnotationScanner(SocketIOServer socketIOServer){
    return new SpringAnnotationScanner(socketIOServer);
}

2.连接，断开连接，推送消息，接收消息

@OnConnect
public void onConnect(SocketIOClient client) {
    String no0 = client.getHandshakeData().getSingleUrlParam("no");
    logger.info("工号为no = {}的用户建立WebSocket连接", no0);
    int no = 0;
    try {
        no = Integer.parseInt(no0);
    } catch (Exception e) {
        logger.error("建立WebSocket连接，获取工号信息异常");
    }
    if (no != 0) {
        noClientMap.put(no, client);
    }
}


@OnDisconnect
public void onDisConnect(SocketIOClient client) {
    String no0 = client.getHandshakeData().getSingleUrlParam("no");

    logger.info("工号为no = {}的用户断开WebSocket连接", no0);
    
    int no = 0;
    try {
        no = Integer.parseInt(no0);
    } catch (Exception e) {
        logger.error("建立WebSocket连接，获取工号信息异常");
    }
    if (no != 0) {
        noClientMap.remove(no, client);
    }

}


@OnEvent(value = "noEvent")
public void onEvent(SocketIOClient client, Integer data, AckRequest request) {
    logger.info("工号no = {}的用户推送消息", data    );
    if (data != null && data > 0) {
        noClientMap.put(data, client);
    }
}



@Override
public void toOne(int no, String eventName, Object data) {
    SocketIOClient socketIOClient = noClientMap.get(no);
    if (socketIOClient != null) {
        try {
            // 推送消息即为调用SocketIOClient的sendEvent方法
            socketIOClient.sendEvent(eventName, data);
        } catch (Exception e) {
            logger.info("推送消息给工号为no = {}的用户异常", no, e.getMessage());
        }
    }

}

@Override
public void toAll(Object data) {
    for (Integer no : noClientMap.keySet()) {
        toOne(no, NettyEventEnum.RUNNING_TASK.getName(), data);
    }
}

前端Demo代码

1.引入socket.io文件

2.建立连接、断开连接、接收消息、推送消息

 

转载于:https://my.oschina.net/hutaishi/blog/1820047