Java Spring WebSocket-分离MessageMapping和SendTo
我在spring 4的WebSocket上遇到了以下问题,不知道为什么会出现这种代码:Java Spring WebSocket-分离MessageMapping和SendTo,java,spring,spring-boot,spring-websocket,Java,Spring,Spring Boot,Spring Websocket,我在spring 4的WebSocket上遇到了以下问题,不知道为什么会出现这种代码: @MessageMapping("/hello") @SendTo("/topic/greetings") public Greeting greeting(HelloMessage message) throws Exception { Thread.sleep(3000); return new Greeting("Hello, " + message.getName() + "!");
@MessageMapping("/hello")
@SendTo("/topic/greetings")
public Greeting greeting(HelloMessage message) throws Exception {
Thread.sleep(3000);
return new Greeting("Hello, " + message.getName() + "!");
}
工作正常,为什么不能:
@MessageMapping("/hello")
public void hehe(HelloMessage message){
try {
greeting(message);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@SendTo("/topic/greetings")
public Greeting greeting(HelloMessage message) throws Exception {
Thread.sleep(3000);
return new Greeting("Hello, " + message.getName() + "!");
}
我正在寻找解决方案,如果服务器端发生事件,如何调用
greeting()
@MessageMapping("/hello")
@SendTo("/topic/greetings")
public Greeting greeting(HelloMessage message) throws Exception {
Thread.sleep(3000);
return new Greeting("Hello, " + message.getName() + "!");
}
在服务器端事件中,如果要发送到目标,应使用:
simpMessagingTemplate.convertAndSend("/user/" + username + "/topic/greetings",
new Greeting("Hello, " + message.getName() + "!"));
// username should refer to the user in socket header if you want to send to a specific user
// omit the prefix /user/<username> if you are broadcasting
非常感谢。今天,还有别的办法吗?
@Autowired
org.springframework.messaging.simp.SimpMessagingTemplate simpMessagingTemplate;