更多ruoyi-nbcio功能请看演示系统
gitee源代码地址
前后端代码： https://gitee.com/nbacheng/ruoyi-nbcio
演示地址：RuoYi-Nbcio后台管理系统
1、重写websocketserver，如下，这里主要是用到了redis的订阅机制，具体也可以看相关文章：
package com.ruoyi.common.websocket; import cn.hutool.json.JSONUtil; import lombok.extern.slf4j.Slf4j; import com.alibaba.fastjson.JSONObject; import com.ruoyi.common.constant.WebsocketConst; import com.ruoyi.common.core.domain.BaseProtocol; import com.ruoyi.common.redis.NbcioRedisClient; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.stereotype.Component; import javax.annotation.Resource; import javax.websocket.*; import javax.websocket.server.PathParam; import javax.websocket.server.ServerEndpoint; import java.io.IOException; import java.util.HashMap; import java.util.Map; import java.util.concurrent.CopyOnWriteArraySet; import java.util.concurrent.atomic.AtomicInteger; import com.ruoyi.common.base.BaseMap; // @ServerEndpoint 声明并创建了webSocket端点, 并且指明了请求路径 // id 为客户端请求时携带的参数, 用于服务端区分客户端使用 /** * @ServerEndpoint 声明并创建了websocket端点, 并且指明了请求路径 * userId 为客户端请求时携带的用户userId, 用于区分发给哪个用户的消息 * @author nbacheng * @date 2023-09-20 */ @Component @Slf4j @ServerEndpoint("/websocket/{userId}") //此注解相当于设置访问URL public class WebSocketServer { private Session session; private String userId; private static final String REDIS_TOPIC_NAME = "socketHandler"; @Resource private NbcioRedisClient nbcioRedisClient; /** * 缓存 webSocket连接到单机服务class中（整体方案支持集群） */ private static CopyOnWriteArraySet<WebSocketServer> webSockets = new CopyOnWriteArraySet<>(); private static Map<String, Session> sessionPool = new HashMap<String, Session>(); @OnOpen public void onOpen(Session session, @PathParam(value = "userId") String userId) { try { this.session = session; this.userId = userId; webSockets.add(this); sessionPool.put(userId, session); log.info("【websocket消息】有新的连接，总数为:" + webSockets.size()); } catch (Exception e) { } } @OnClose public void onClose() { try { webSockets.remove(this); sessionPool.remove(this.userId); log.info("【websocket消息】连接断开，总数为:" + webSockets.size()); } catch (Exception e) { } } /** * 服务端推送消息 * * @param userId * @param message */ public void pushMessage(String userId, String message) { Session session = sessionPool.get(userId); if (session != null && session.isOpen()) { try { synchronized (session){ log.info("【websocket消息】 单点消息:" + message); session.getBasicRemote().sendText(message); } } catch (Exception e) { e.printStackTrace(); } } } /** * 服务器端推送消息 */ public void pushMessage(String message) { try { webSockets.forEach(ws -> ws.session.getAsyncRemote().sendText(message)); } catch (Exception e) { e.printStackTrace(); } } @OnMessage public void onMessage(String message) { //todo 现在有个定时任务刷，应该去掉 log.debug("【websocket消息】收到客户端消息:" + message); JSONObject obj = new JSONObject(); //业务类型 obj.put(WebsocketConst.MSG_CMD, WebsocketConst.CMD_CHECK); //消息内容 obj.put(WebsocketConst.MSG_TXT, "心跳响应"); for (WebSocketServer webSocket : webSockets) { webSocket.pushMessage(message); } } /** * 后台发送消息到redis * * @param message */ public void sendMessage(String message) { log.info("【websocket消息】广播消息:" + message); BaseMap baseMap = new BaseMap(); baseMap.put("userId", ""); baseMap.put("message", message); nbcioRedisClient.sendMessage(REDIS_TOPIC_NAME, baseMap); } /** * 此为单点消息 * * @param userId * @param message */ public void sendMessage(String userId, String message) { BaseMap baseMap = new BaseMap(); baseMap.put("userId", userId); baseMap.put("message", message); nbcioRedisClient.sendMessage(REDIS_TOPIC_NAME, baseMap); } /** * 此为单点消息(多人) * * @param userIds * @param message */ public void sendMessage(String[] userIds, String message) { for (String userId : userIds) { sendMessage(userId, message); } } }
2、RedisConfig增加监听器
/** * redis 监听配置 * * @param redisConnectionFactory redis 配置 * @return */ @Bean public RedisMessageListenerContainer redisContainer(RedisConnectionFactory redisConnectionFactory, RedisReceiver redisReceiver, MessageListenerAdapter commonListenerAdapter) { RedisMessageListenerContainer container = new RedisMessageListenerContainer(); container.setConnectionFactory(redisConnectionFactory); container.addMessageListener(commonListenerAdapter, new ChannelTopic(GlobalConstants.REDIS_TOPIC_NAME)); return container; } @Bean MessageListenerAdapter commonListenerAdapter(RedisReceiver redisReceiver) { MessageListenerAdapter messageListenerAdapter = new MessageListenerAdapter(redisReceiver, "onMessage"); messageListenerAdapter.setSerializer(jacksonSerializer()); return messageListenerAdapter; } private Jackson2JsonRedisSerializer jacksonSerializer() { Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class); ObjectMapper objectMapper = new ObjectMapper(); objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY); objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL); jackson2JsonRedisSerializer.setObjectMapper(objectMapper); return jackson2JsonRedisSerializer; }
3、RedisReceiver 如下：
package com.ruoyi.common.redis; import org.springframework.stereotype.Component; import com.ruoyi.common.base.BaseMap; import com.ruoyi.common.constant.GlobalConstants; import com.ruoyi.common.redis.listener.NbcioRedisListener; import com.ruoyi.common.utils.SpringContextHolder; import cn.hutool.core.util.ObjectUtil; import lombok.Data; /** * 接受消息并调用业务逻辑处理器 * @author nbacheng * @date 2023-09-20 */ @Component @Data public class RedisReceiver { public void onMessage(BaseMap params) { Object handlerName = params.get(GlobalConstants.HANDLER_NAME); NbcioRedisListener messageListener = SpringContextHolder.getHandler(handlerName.toString(), NbcioRedisListener.class); if (ObjectUtil.isNotEmpty(messageListener)) { messageListener.onMessage(params); } } }
