我想向特定客户发送通知。
例如用户名用户
@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfiguration extends
AbstractWebSocketMessageBrokerConfigurer {
@Override
public void registerStompEndpoints(StompEndpointRegistry stompEndpointRegistry) {
stompEndpointRegistry.addEndpoint("/socket")
.setAllowedOrigins("*")
.withSockJS();
}
@Override
public void configureMessageBroker(MessageBrokerRegistry registry) {
registry.enableSimpleBroker("/topic", "/queue");
registry.setApplicationDestinationPrefixes("/app");
}
控制器
@GetMapping("/notify")
public String getNotification(Principal principal) {
String username = "user";
notifications.increment();
logger.info("counter" + notifications.getCount() + "" + principal.getName());
// logger.info("usersend:"+sha.getUser().getName()) ; //user
template.convertAndSendToUser(principal.getName(), "queue/notification", notifications);
return "Notifications successfully sent to Angular !";
}
客户端
Angular Service
connect() {
let socket = new SockJs(`api/socket`);
let stompClient = Stomp.over(socket);
return stompClient;
}
角度组件
let stompClient = this.webSocketService.connect();
stompClient.connect({}, frame => {
stompClient.subscribe('/user/queue/notification', notifications => {
console.log('test'+notifications)
this.notifications = JSON.parse(notifications.body).count;
}) });
我已经搜索了许多其他问题但尝试过,但没有一个能为我工作 例如here由Thanh Nguyen Van和 here
回答控制台
Opening Web Socket...
stomp.js:134 Web Socket Opened...
stomp.js:134 >>> CONNECT
accept-version:1.1,1.0
heart-beat:10000,10000
stomp.js:134 <<< CONNECTED
version:1.1
heart-beat:0,0
stomp.js:134 connected to server undefined
reminder.component.ts:18 test callsed
stomp.js:134 >>> SUBSCRIBE
id:sub-0
destination:/user/queue/notification
提前谢谢。
答案 0 :(得分:8)
gerrytan对Sending message to specific user on Spring Websocket的回答提到了网络套接字配置更改,以注册/user
前缀。在你的情况下,我想这意味着要替换
registry.enableSimpleBroker("/topic", "/queue");
带
registry.enableSimpleBroker("/topic", "/queue", "/user");
他还说在控制器中你不需要/user
前缀,因为它是自动添加的。所以你可以试试这个:
template.convertAndSendToUser(principal.getName(), "/queue/notification", notifications);
和此:
template.convertAndSendToUser(principal.getName(), "/user/queue/notification", notifications);
在客户端,您需要提供用于连接服务器的用户名。您可以直接插入它:
stompClient.subscribe('/user/naila/queue/notification', ...)
或从标题中获取它。但是Markus在How to send websocket message to concrete user?说,即使在这里你也不需要用户名,所以它可能会这样:
stompClient.subscribe('/user/queue/notification', ...)
答案 1 :(得分:7)
似乎你错过了目的地的斜线:
template.convertAndSendToUser(principal.getName(), "/queue/notification", notifications);