使用Spring Websocket发送消息给特定用户

问题描述 投票:0回答:1

我用本教程中介绍的spring设置了WebSocket:https://spring.io/guides/gs/messaging-stomp-websocket/。我需要的是我的服务器每5秒钟向特定用户发送一条消息。所以我首先做了这个:

@Autowired
private SimpMessagingTemplate template;

@Scheduled(fixedRate = 5000)
public void greet() {
    template.convertAndSend("/topic/greetings", new Greeting("Bufff!"));
}

并且有效。现在只向特定用户发送邮件,我更改了以下内容:

@Scheduled(fixedRate = 5000)
public void greet() {
   template.convertAndSendToUser("MyName","/queue/greetings", new Greeting("Bufff!"));
}

在WebSocketConfig.java中添加队列:

public void configureMessageBroker(MessageBrokerRegistry config) {
    config.enableSimpleBroker("/topic","/queue");
    config.setApplicationDestinationPrefixes("/app");
}

在GreetingController.java中更改注释:

@MessageMapping("/hello")
@SendToUser("/queue/greetings")
public Greeting UserGreeting(HelloMessage message, Principal principal) throws Exception {
    Thread.sleep(1000); // simulated delay
    return new Greeting("Hello, " + HtmlUtils.htmlEscape(message.getName()) + "!");
}

并更改app.js中的连接功能:

var socket = new SockJS('/gs-guide-websocket');
stompClient = Stomp.over(socket);
stompClient.connect({}, function (frame) {
    setConnected(true);
    console.log('Connected: ' + frame);
    stompClient.subscribe('user/queue/greetings', function (greeting) {
        showGreeting(JSON.parse(greeting.body).content);
    });
});

服务器使用spring-boot-security,并且通过使用SimpUserRegistry MyName查找所有用户来确保https://stackoverflow.com/a/32215398/11663023是正确的名称)。但不幸的是我的代码无法正常工作。我已经尝试过此Sending message to specific user using spring,但我不希望Spring区分会话,而是区分用户。我也查看了此Sending message to specific user on Spring Websocket,但它没有帮助,因为该链接无效。

这是我的控制台日志:

2020-01-20 17:08:51.352 DEBUG 8736 --- [nboundChannel-3] .WebSocketAnnotationMethodMessageHandler : Searching methods to handle SEND /app/hello session=kvv0m1qm, lookupDestination='/hello'
2020-01-20 17:08:51.352 DEBUG 8736 --- [nboundChannel-3] .WebSocketAnnotationMethodMessageHandler : Invoking de.iteratec.iteraweb.controllers.GreetingController#UserGreeting[2 args]
2020-01-20 17:08:52.354 DEBUG 8736 --- [nboundChannel-3] org.springframework.web.SimpLogging      : Processing MESSAGE destination=/queue/greetings-userkvv0m1qm session=null payload={"content":"Hello, hey!"}
2020-01-20 17:08:54.882 DEBUG 8736 --- [MessageBroker-2] org.springframework.web.SimpLogging      : Processing MESSAGE destination=/queue/greetings-userkvv0m1qm session=null payload={"content":"Bufff!"}
2020-01-20 17:08:59.883 DEBUG 8736 --- [MessageBroker-4] org.springframework.web.SimpLogging      : Processing MESSAGE destination=/queue/greetings-userkvv0m1qm session=null payload={"content":"Bufff!"}

我想念零钱吗?

spring-boot spring-security spring-websocket stomp
1个回答
0
投票

您能看到客户端成功订阅了您的端点吗?

我认为您缺少客户端代码中的第一个/ 'user/queue/greetings'应该为'/user/queue/greetings'

© www.soinside.com 2019 - 2024. All rights reserved.