我在本教程中设置了一个带有spring的WebSocket:https://spring.io/guides/gs/messaging-stomp-websocket/。我需要的是我的服务器每5秒向特定用户发送一条消息。所以我第一次做了这个:
@Autowired
private SimpMessagingTemplate template;
@Scheduled(fixedRate = 5000)
public void greet() {
template.convertAndSend("/topic/greetings", new Greeting("Bufff!"));
}而且它是有效的。现在,为了只向特定用户发送消息,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");
}更改GreetingController.java中的注释:
@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()) + "!");
}并在app.js中更改连接函数:
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引导安全性,如果MyName是正确的名称,我使用SimpUserRegistry https://stackoverflow.com/a/32215398/11663023查找所有用户)。但不幸的是,我的代码不起作用。我已经尝试过这个Sending message to specific user using spring,但是我不希望Spring区分会话而是用户。我也看过这个Sending message to specific user on Spring Websocket,但是它没有帮助,因为链接不起作用。
那是我的控制台日志:
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!"}我错过了改变吗?
发布于 2020-02-26 05:33:40
您能看到客户端成功地订阅了您的端点吗?
我认为您缺少了客户机代码中的第一个/,'user/queue/greetings'应该是'/user/queue/greetings'。
https://stackoverflow.com/questions/59827107
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