<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-amqp</artifactId>
</dependency>

#消息隊(duì)列
message.queue.type: rabbitmq
## rabbit mq properties
rabbitmq:
 host: localhost
 port: 5672
 username: guest
 password: guest

#將要使用的隊(duì)列名
rabbitmq.websocket.msg.queue=websocket_msg_queue

@Configuration
@EnableRabbit
public class RabbitMQConfig {

  @Value("${rabbitmq.host}")
  private String host;
  @Value("${rabbitmq.port}")
  private String port;
  @Value("${rabbitmq.username}")
  private String username;
  @Value("${rabbitmq.password}")
  private String password;
  @Value("${rabbitmq.websocket.msg.queue}")
  private String webSocketMsgQueue;

  @Bean
  public ConnectionFactory connectionFactory() throws IOException {
    CachingConnectionFactory factory = new CachingConnectionFactory();
    factory.setUsername(username);
    factory.setPassword(password);
//    factory.setVirtualHost("test");
    factory.setHost(host);
    factory.setPort(Integer.valueOf(port));
    factory.setPublisherConfirms(true);

    //設(shè)置隊(duì)列參數(shù)，是否持久化、隊(duì)列TTL、隊(duì)列消息TTL等
    factory.createConnection().createChannel(false).queueDeclare(webSocketMsgQueue, true, false, false, null);
    return factory;
  }

  @Bean
  public MessageConverter messageConverter() {
    return new Jackson2JsonMessageConverter();
  }

  @Bean
  @Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE)
  // 必須是prototype類型
  public RabbitTemplate rabbitTemplate() throws IOException {
    return new RabbitTemplate(connectionFactory());
  }

  @Bean
  public SimpleRabbitListenerContainerFactory rabbitListenerContainerFactory() throws IOException {
    SimpleRabbitListenerContainerFactory factory = new SimpleRabbitListenerContainerFactory();
    factory.setConnectionFactory(connectionFactory());
    factory.setConcurrentConsumers(3);
    factory.setMaxConcurrentConsumers(10);
    factory.setAcknowledgeMode(AcknowledgeMode.MANUAL);
    return factory;
  }
}

@Component
public class RabbitMQListener {

  @Autowired
  private RabbitMQService mqService;

  /**
   * WebSocket推送監(jiān)聽器
   * @param socketEntity
   * @param deliveryTag
   * @param channel
   */
  @RabbitListener(queues = "websocket_msg_queue")
  public void webSocketMsgListener(@Payload WebSocketMsgEntity socketMsgEntity, @Header(AmqpHeaders.DELIVERY_TAG) long deliveryTag, Channel channel) throws IOException {
    mqService.handleWebSocketMsg(socketMsgEntity, deliveryTag, channel);
  }

}

public class RabbitMQService {
  @Autowired
  private MessageWebSocketHandler messageWebSocketHandler;

  /**
   * @param socketMsgEntity
   * @param deliveryTag
   * @param channel
   * @throws IOException
   */
  void handleWebSocketMsg(WebSocketMsgEntity socketMsgEntity, long deliveryTag, Channel channel) throws IOException {
    try {
      messageWebSocketHandler.sendMessageToUsers(socketMsgEntity.toJsonString(), socketMsgEntity.getToUserIds());
      channel.basicAck(deliveryTag, false);
    } catch (Exception e) {
      channel.basicNack(deliveryTag, false, false);
    }
  }
}

public class WebSocketMsgEntity implements Serializable {
  public enum OrderType{
    repair("維修"),
    maintain("保養(yǎng)"),
    measure("計(jì)量");

    OrderType(String value){
      this.value = value;
    }
    String value;

    public String getValue() {
      return value;
    }
  }
  //設(shè)備名稱
  private String EquName;
  //設(shè)備編號(hào)
  private String EquId;
  //工單類型
  private OrderType orderType;
  //工單單號(hào)
  private String orderId;
  //工單狀態(tài)
  private String orderStatus;
  //創(chuàng)建時(shí)間
  private Date createTime;
  //消息接收人ID
  private List<String> toUserIds;

  public String getEquName() {
    return EquName;
  }

  public void setEquName(String equName) {
    EquName = equName;
  }

  public String getOrderId() {
    return orderId;
  }

  public void setOrderId(String orderId) {
    this.orderId = orderId;
  }

  public String getEquId() {
    return EquId;
  }

  public void setEquId(String equId) {
    EquId = equId;
  }

  public String getOrderStatus() {
    return orderStatus;
  }

  public void setOrderStatus(String orderStatus) {
    this.orderStatus = orderStatus;
  }


  public OrderType getOrderType() {
    return orderType;
  }

  public void setOrderType(OrderType orderType) {
    this.orderType = orderType;
  }

  public Date getCreateTime() {
    return createTime;
  }

  public void setCreateTime(Date createTime) {
    this.createTime = createTime;
  }

  public List<String> getToUserIds() {
    return toUserIds;
  }

  public void setToUserIds(List<String> toUserIds) {
    this.toUserIds = toUserIds;
  }

  public String toJsonString(){
    return JSON.toJSONString(this);
  }
}

@Aspect
@Component
public class DataInterceptor {
  @Autowired
  private MessageQueueService queueService;


  //維修工單切點(diǎn)
  @Pointcut("execution(* com.zhishang.hes.common.service.impl.RepairServiceImpl.executeFlow(..))")
  private void repairMsg() {
  }

  /**
   * 返回通知，方法執(zhí)行正常返回時(shí)觸發(fā)
   *
   * @param joinPoint
   * @param result
   */
  @AfterReturning(value = "repairMsg()", returning = "result")
  public void afterReturning(JoinPoint joinPoint, Object result) {
    //此處可以獲得切點(diǎn)方法名
    //String methodName = joinPoint.getSignature().getName();
    EquipmentRepair equipmentRepair = (EquipmentRepair) result;
    WebSocketMsgEntity webSocketMsgEntity = this.generateRepairMsgEntity(equipmentRepair);
    if (webSocketMsgEntity == null) {
      return;
    }
    queueService.send(webSocketMsgEntity);
  }

  /**
   * 生成發(fā)送到MQ的維修消息
   *
   * @param equipmentRepair
   * @return
   */
  private WebSocketMsgEntity generateRepairMsgEntity(EquipmentRepair equipmentRepair) {
    WebSocketMsgEntity webSocketMsgEntity = generateRepairMsgFromTasks(equipmentRepair);
    return webSocketMsgEntity;
  }

  /**
   * 從任務(wù)中生成消息
   *
   * @param equipmentRepair
   * @return
   */
  private WebSocketMsgEntity generateRepairMsgFromTasks(EquipmentRepair equipmentRepair) {
    //業(yè)務(wù)代碼略
  }

}

public class RabbitMessageQueue extends AbstractMessageQueue {

  @Value("${rabbitmq.websocket.msg.queue}")
  private String webSocketMsgQueue;

  @Autowired
  private RabbitTemplate rabbitTemplate;

  @Override
  public void send(WebSocketMsgEntity entity) {
    //沒(méi)有指定exchange，則使用默認(rèn)名為“”的exchange，binding名與queue名相同
    rabbitTemplate.convertAndSend(webSocketMsgQueue, entity);
  }
}

<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-websocket</artifactId>
  <version>4.3.10.RELEASE</version>
</dependency>

@Configuration
@EnableWebSocket
public class WebSocketConfig extends WebMvcConfigurerAdapter implements WebSocketConfigurer {

  private static Logger logger = LoggerFactory.getLogger(WebSocketConfig.class);

  @Override
  public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
    //配置webSocket路徑
    registry.addHandler(messageWebSocketHandler(),"/msg-websocket").addInterceptors(new MyHandshakeInterceptor()).setAllowedOrigins("*");
    //配置webSocket路徑 支持前端使用socketJs
    registry.addHandler(messageWebSocketHandler(), "/sockjs/msg-websocket").setAllowedOrigins("*").addInterceptors(new MyHandshakeInterceptor()).withSockJS();
  }

  @Bean
  public MessageWebSocketHandler messageWebSocketHandler() {
    logger.info("......創(chuàng)建MessageWebSocketHandler......");
    return new MessageWebSocketHandler();
  }

}

public class MessageWebSocketHandler extends TextWebSocketHandler {
  private static Logger logger = LoggerFactory.getLogger(SystemWebSocketHandler.class);
  private static ConcurrentHashMap<String, CopyOnWriteArraySet<WebSocketSession>> users = new ConcurrentHashMap<>();

  @Override
  public void afterConnectionEstablished(WebSocketSession session) throws Exception {
    String userId = session.getAttributes().get("WEBSOCKET_USERID").toString();
    logger.info("......AfterConnectionEstablished......");
    logger.info("session.getId:" + session.getId());
    logger.info("session.getLocalAddress:" + session.getLocalAddress().toString());
    logger.info("userId:" + userId);
    //websocket連接后記錄連接信息
    if (users.keySet().contains(userId)) {
      CopyOnWriteArraySet<WebSocketSession> webSocketSessions = users.get(userId);
      webSocketSessions.add(session);
    } else {
      CopyOnWriteArraySet<WebSocketSession> webSocketSessions = new CopyOnWriteArraySet<>();
      webSocketSessions.add(session);
      users.put(userId, webSocketSessions);
    }
  }

  @Override
  public void handleTransportError(WebSocketSession session, Throwable throwable) throws Exception {
    removeUserSession(session);
    if (session.isOpen()) {
      session.close();
    }
    logger.info("異常出現(xiàn)handleTransportError" + throwable.getMessage());
  }

  @Override
  public void afterConnectionClosed(WebSocketSession session, CloseStatus closeStatus) throws Exception {
    removeUserSession(session);
    logger.info("關(guān)閉afterConnectionClosed" + closeStatus.getReason());
  }

  @Override
  public boolean supportsPartialMessages() {
    return false;
  }

  /**
   * 給符合要求的在線用戶發(fā)送消息
   *
   * @param message
   */
  public void sendMessageToUsers(String message, List<String> userIds) throws IOException{
    if (StringUtils.isEmpty(message) || CollectionUtils.isEmpty(userIds)) {
      return;
    }
    if (users.isEmpty()) {
      return;
    }
    for (String userId : userIds) {
      if (!users.keySet().contains(userId)) {
        continue;
      }
      CopyOnWriteArraySet<WebSocketSession> webSocketSessions = users.get(userId);
      if (webSocketSessions == null) {
        continue;
      }
      for (WebSocketSession webSocketSession : webSocketSessions) {
        if (webSocketSession.isOpen()) {
          try {
            webSocketSession.sendMessage(new TextMessage(message));
          } catch (IOException e) {
            logger.error(" WebSocket server send message ERROR " + e.getMessage());
            try {
              throw e;
            } catch (IOException e1) {
              e1.printStackTrace();
            }
          }
        }
      }
    }
  }

  /**
   * websocket清除連接信息
   *
   * @param session
   */
  private void removeUserSession(WebSocketSession session) {
    String userId = session.getAttributes().get("WEBSOCKET_USERID").toString();
    if (users.keySet().contains(userId)) {
      CopyOnWriteArraySet<WebSocketSession> webSocketSessions = users.get(userId);
      webSocketSessions.remove(session);
      if (webSocketSessions.isEmpty()) {
        users.remove(userId);
      }
    }
  }
}