我有一个弹簧引导服务器和其使用STOMP通过的WebSockets连接的客户机。
我使用的情况是,我想将数据发送到客户端,每一个HTTP请求到特定端点是由时间。所有我发现教程,只显示的情况下,客户端的一些数据发送到“/你好”和服务器发送数据“主题/问候”反应:
@MessageMapping("/hello")
@SendTo("/topic/greetings")
public Greeting greeting(HelloMessage message) throws Exception {
Thread.sleep(1000); // simulated delay
return new Greeting("Hello, " + HtmlUtils.htmlEscape(message.getName()) + "!");
}
我所需要的是,而不需要该消息映射的发送数据的控制器方法。它应该只是将数据发送到客户端每次有人进行一个GET请求到端点。我尝试以下,但它没有工作:
@Autowired
private SimpMessagingTemplate msgTemplate;
@SendTo("topic/data-received")
@RequestMapping(value = "/send-data", method = RequestMethod.POST)
public String sendData(@RequestHeader(value = "id") String id,
@RequestHeader(value = "data") String data) {
User user = new User();
user.id = UUID.fromString(id);
user.stringData = data;
database.saveStringData(user);
msgTemplate.convertAndSend("topic/data-received", "data sent!!");
return "successful";
}
这里是我的客户端代码:
function connect() {
var socket = new SockJS('/clipboard-websocket');
var stompClient = Stomp.over(socket);
stompClient.connect({}, function (frame) {
console.log('Connected: ' + frame);
stompClient.subscribe('topic/data-received/', function (message) {
alert("Data received!!");
});
}
这就是我的WebSocket的配置:
@Override
public void configureMessageBroker(MessageBrokerRegistry config) {
config.enableSimpleBroker("/topic");
config.setApplicationDestinationPrefixes("/app");
}
@Override
public void registerStompEndpoints(StompEndpointRegistry registry) {
registry.addEndpoint("/clipboard-websocket").withSockJS();
}
尾部的斜杠中缺少目标
msgTemplate.convertAndSend("/topic/data-received", "data sent!!");