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zj

2024-07-24 2ab70fbbd50f197ff60858bc008dafda1c0bdb5c

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 websocketSerivce/src/main/java/org/example/pojo/bo/WsBo.java

New file
@@ -0,0 +1,16 @@
package org.example.pojo.bo;

import lombok.Data;

/**
 * @program: demo
 * @description:
 * @create: 2024-07-24 10:37
 **/
@Data
public class WsBo {

    private Integer userId;

    private int time;
}

 websocketSerivce/src/main/java/org/example/server/impl/CurrencySerivceImpl.java

@@ -247,7 +247,7 @@
//        RedisUtil.set(key,json);
        try {
            // 全体发送
            wsServer.sendMessageToAll(json);
            wsServer.sendMessageToAll("11111111111111111111");
        } catch (Exception e) {
            e.printStackTrace();
        }

 websocketSerivce/src/main/java/org/example/websocket/server/WsServer.java

@@ -1,17 +1,19 @@
package org.example.websocket.server;

import cn.hutool.json.JSONUtil;
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;
import lombok.NonNull;
import lombok.extern.slf4j.Slf4j;
import org.example.pojo.bo.WsBo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import java.io.ByteArrayOutputStream;

import javax.annotation.PostConstruct;
import javax.websocket.*;
import javax.websocket.server.ServerEndpoint;
import java.io.IOException;
@@ -20,6 +22,7 @@
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
@@ -39,9 +42,18 @@
    private Session session;
    private static AtomicInteger onlineCount = new AtomicInteger(0);
    private static CopyOnWriteArraySet<WsServer> wsServers = new CopyOnWriteArraySet<>();
    // 线程局部变量，用于存储每个线程的数据
    private static final Map<String, WsBo> threadLocalData = new ConcurrentHashMap<>();

    @Autowired
    @Qualifier("threadPoolTaskExecutor")
    private ThreadPoolTaskExecutor threadPoolTaskExecutor;

    // 定义常量：任务检查的超时时间(秒)
    private static final int SUBSCRIPTION_TIMEOUT_SECONDS = 30;

    private ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);
    private Map<String, ScheduledFuture<?>> scheduledTasks = new ConcurrentHashMap<>();

    @OnOpen
    public void onOpen(Session session) {
@@ -49,11 +61,24 @@
        int count = onlineCount.incrementAndGet();
        wsServers.add(this);
        log.info("与客户端连接成功，当前连接的客户端数量为：{}", count);

        // 设置定时任务，在SUBSCRIPTION_TIMEOUT_SECONDS秒后检查是否收到订阅消息
        ScheduledFuture<?> timeoutTask = scheduler.schedule(() -> {
            if (!hasReceivedSubscription(session)) {
                closeSession(session, "未及时发送订阅消息");
            }
        }, SUBSCRIPTION_TIMEOUT_SECONDS, TimeUnit.SECONDS);
        scheduledTasks.put(session.getId(), timeoutTask);
    }

    private boolean hasReceivedSubscription(Session session) {
        WsBo wsBo = getWsBoForSession(session.getId());
        return wsBo != null; // 简化逻辑
    }

    @OnError
    public void onError(Session session, @NonNull Throwable throwable) {
        log.error("连接发生报错");
        log.error("连接发生报错: {}", throwable.getMessage());
        throwable.printStackTrace();
    }

@@ -61,7 +86,29 @@
    public void onClose() {
        int count = onlineCount.decrementAndGet();
        wsServers.remove(this);
        cancelScheduledTasks(); // 取消定时任务
        log.info("服务端断开连接，当前连接的客户端数量为：{}", count);
    }

    private void cancelScheduledTasks() {
        ScheduledFuture<?> future = scheduledTasks.remove(this.session.getId());
        if (future != null) {
            future.cancel(true); // 取消定时任务
        }
        ScheduledFuture<?> task = pushTasks.remove(this.session.getId());
        if (task != null) {
            task.cancel(true); // 取消推送任务
        }
    }

    @OnMessage
    public void onMessage(String message, Session session) throws IOException {
        try {
            WsBo bean = JSONUtil.toBean(message, WsBo.class);
            threadLocalData.put(session.getId(), bean);
        }catch (Exception e){
            log.error("客户段订阅消息格式错误");
        }
    }

    private Map<String, Lock> sessionLocks = new ConcurrentHashMap<>();
@@ -72,67 +119,76 @@
    }

    public void sendMessageToAll(String message) {
//        Map<String, Object> map = jsonToMap(message);
//        if (map.get("pid").equals("00000001")) {
//            System.out.println(message);
//        }
        try {
            List<Future<?>> futures = new ArrayList<>();
            wsServers.forEach(ws -> {
                Future<?> future = threadPoolTaskExecutor.submit(() -> {
        List<CompletableFuture<Void>> futures = new ArrayList<>();
        wsServers.forEach(ws -> {
            futures.add(CompletableFuture.runAsync(() -> {
                try {
                    Session session = ws.session;
                    if (session != null && session.isOpen()) {
                        Lock sessionLock = getSessionLock(session.getId());
                        sessionLock.lock();
                        try {
                            synchronized (session){
                                // 压缩消息
                                byte[] compressedData = compress(message);

                                // 发送压缩后的消息
                                session.getBasicRemote().sendBinary(ByteBuffer.wrap(compressedData));
//                                session.getBasicRemote().sendText(message);
                            WsBo wsBo = getWsBoForSession(session.getId());
                            if (wsBo != null) {
                                int intervalSeconds = wsBo.getTime();
                                pushMessageWithInterval(session, message, intervalSeconds);
                            }
                        } catch (Exception e) {
                            log.error("发送消息时出现异常: " + e.getMessage());
                            log.error("发送消息时出现异常: {}", e.getMessage());
                        } finally {
                            sessionLock.unlock();
                        }
                    } else {
                        log.error("会话不存在或已关闭，无法发送消息");
                    }
                });
                futures.add(future);
            });
                } catch (Exception e) {
                    log.error("处理消息失败: {}", e.getMessage());
                }
            }, threadPoolTaskExecutor));
        });

            //等待所有任务执行完成
            for (Future<?> future : futures) {
        // 等待所有任务执行完成
        CompletableFuture.allOf(futures.toArray(new CompletableFuture[0])).join();
    }

    private WsBo getWsBoForSession(String sessionId) {
        return threadLocalData.get(sessionId);
    }

    private Map<String, ScheduledFuture<?>> pushTasks = new ConcurrentHashMap<>();
    ScheduledExecutorService  pushScheduler  =  Executors.newScheduledThreadPool(1);

    private void pushMessageWithInterval(Session session, String message, int intervalSeconds) {
        // 创建一个可以控制任务状态的 AtomicBoolean
        intervalSeconds = 5;
        AtomicBoolean isActive = new AtomicBoolean(true);
        ScheduledFuture<?> future = pushScheduler.scheduleAtFixedRate(() -> {
            if (isActive.get()) { // 检查是否应该继续执行
                try {
                    future.get();
                } catch (InterruptedException | ExecutionException e) {
                    log.error("发送消息时出现异常: " + e.getMessage());
                    pushMessage(session, message);
                } catch (Exception e) {
                    log.error("推送消息时出现异常: {}", e.getMessage());
                    isActive.set(false); // 出现异常则停止任务
                }
            }
        } catch (Exception e) {
            log.error("发送消息时出现异常: " + e.getMessage());
        }
        }, 0, intervalSeconds, TimeUnit.SECONDS);

        // 保存任务的引用，以便后续取消
        pushTasks.put(session.getId(), future);
    }

    private byte[] compress(String data) throws IOException {
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        Deflater deflater = new Deflater(Deflater.BEST_COMPRESSION, true);
        try (DeflaterOutputStream deflaterOutputStream = new DeflaterOutputStream(byteArrayOutputStream, deflater)) {
            deflaterOutputStream.write(data.getBytes("UTF-8"));
        }
        deflater.end();
        return byteArrayOutputStream.toByteArray();
    public void pushMessage(Session session, String message) throws IOException {
        session.getBasicRemote().sendText(message);
    }

//
//    public static Map<String, Object> jsonToMap(String json) {
//        Gson gson = new Gson();
//        Type type = new TypeToken<Map<String, Object>>() {
//        }.getType();
//        return gson.fromJson(json, type);
//    }
    // 关闭会话的方法
    private void closeSession(Session session, String reason) {
        try {
            session.close(new CloseReason(CloseReason.CloseCodes.UNEXPECTED_CONDITION, reason));
        } catch (IOException e) {
            log.error("强制断开连接----异常: {}", e.getMessage());
        }
        wsServers.remove(this);
        log.info("客户端未及时发送订阅消息，断开连接");
    }
}