微信小程序与Unity3d实时通信

1.本次根据需求制作一个小程序发消息到Unity3d互动大屏显示的案例，先上效果：

小程序Unity

2.使用SpringBoot写一个Socket通信，用于监听unity3d客户端的连接以及，向unity3d进行消息的转发：

代码如下：

public class SocketIOServiceImpl implements ISocketIOService{
    /**
     * 存放已连接的客户端
     */
    private static Map<String, SocketIOClient> clientMap = new ConcurrentHashMap<>();

    /**
     * 自定义事件`push_data_event`,用于服务端与客户端通信
     */
    private static final String PUSH_DATA_EVENT = "push_data_event";

    @Autowired
    private SocketIOServer socketIOServer;

    /**
     * Spring IoC容器创建之后，在加载SocketIOServiceImpl Bean之后启动
     */
    @PostConstruct
    private void autoStartup() {
        start();
    }

    @PreDestroy
    private void autoStop() {
        stop();
    }

    @Override
    public void start() {
        // 监听客户端连接
        socketIOServer.addConnectListener(client -> {
            System.out.println("************ 客户端： " + getIpByClient(client) + " 已连接 ************");
            // 自定义事件`connected` -> 与客户端通信  （也可以使用内置事件，如：Socket.EVENT_CONNECT）
            client.sendEvent("connected", "你成功连接上了哦...");
            String userId = getParamsByClient(client);
            System.out.println(userId);
            if (userId != null) {
                clientMap.put(userId, client);
            }
        });

        // 监听客户端断开连接
        socketIOServer.addDisconnectListener(client -> {
            String clientIp = getIpByClient(client);
            System.out.println(clientIp + " *********************** " + "客户端已断开连接");
            client.sendEvent("disconnect", "你成功断开连接了哦...");
            String userId = getParamsByClient(client);
            if (userId != null) {
                clientMap.remove(userId);
                client.disconnect();
            }
        });

        // 自定义事件`client_info_event` -> 监听客户端消息
        socketIOServer.addEventListener(PUSH_DATA_EVENT, String.class, (client, data, ackSender) -> {
            // 客户端推送`client_info_event`事件时，onData接受数据，这里是string类型的json数据，还可以为Byte[],object其他类型
            String clientIp = getIpByClient(client);
            System.out.println(clientIp + " ************ 客户端：" + data);
            socketIOServer.getNamespace("").getBroadcastOperations().sendEvent(PUSH_DATA_EVENT,data);
        });

        // 启动服务
        socketIOServer.start();
    }

    @Override
    public void stop() {
        if (socketIOServer != null) {
            socketIOServer.stop();
            socketIOServer = null;
        }
    }

    @Override
    public void pushMessageToUser(String userId, String msgContent) {
        SocketIOClient client = clientMap.get(userId);
        if (client != null) {
            client.sendEvent(PUSH_DATA_EVENT, msgContent);
        }
    }

3.在unity3d书写一个Socket连接服务器端，开启一个socket线程实时接收服务器端转发过来的小程序消息，(IP,端口号)

var uri = new Uri("http://127.0.0.1:8888");
        SocketIOUnity socket = new SocketIOUnity(uri, new SocketIOOptions
        {
            Query = new Dictionary<string, string>
        {
            {"token", "UNITY" }
        }
            ,
            Transport = SocketIOClient.Transport.TransportProtocol.WebSocket
        });

        socket.JsonSerializer = new NewtonsoftJsonSerializer();
        socket.On("connected", (response) =>
        {
            var obj = response.GetValue<string>();
            msg = obj;
            Debug.Log(obj);
        });
        socket.On("push_data_event", (response) =>
        {
            var obj = response.GetValue<string>();
            //Debug.Log(obj);
            msg = obj;
            resMsg = true;
        });
        socket.Connect();

4.服务器和unity3d完成通信之后，在springboot里面为小程序书写一个接口，用于小程序传递消息调用：

import com.mo.serverdemo.service.SocketIOServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/unity")
public class MessageToUnityController {

    @Autowired
    private SocketIOServiceImpl socketIOService;


    @GetMapping("/send")
    public String forwardMessage(@RequestParam("message") String message) {
        socketIOService.brocastMessage(message);
        return "ok";
    }
}

5.小程序调用此接口，进行消息的传递：

 6.调用成功后既可进行实时消息发送与接收。