Java Spring boot WebSocket处理STOMP消息
我有一个SpringBootWebSocket服务器,这是我的代理配置 WebSocketConfig.javaJava Spring boot WebSocket处理STOMP消息,java,spring-boot,stomp,spring-websocket,Java,Spring Boot,Stomp,Spring Websocket,我有一个SpringBootWebSocket服务器,这是我的代理配置 WebSocketConfig.java @Configuration @EnableWebSocketMessageBroker public class WebSocketConfig implements WebSocketMessageBrokerConfigurer { @Override public void registerStompEndpoints(StompEndpointRegist
@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {
@Override
public void registerStompEndpoints(StompEndpointRegistry registry) {
registry.addEndpoint("/endpoint").withSockJS();
}
@Override
public void configureMessageBroker(MessageBrokerRegistry registry) {
registry.enableSimpleBroker("/topic");
registry.setApplicationDestinationPrefixes("/app");
}
}
@Controller
public class MessageController {
@MessageMapping("/topic")
@SendTo("/topic/greetings/{message}")
public String handleMessage(@PathVariable String message){
return "[" + message + "] at " + LocalDate.now();
}
}
和消息控制器
MessageController.java
@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {
@Override
public void registerStompEndpoints(StompEndpointRegistry registry) {
registry.addEndpoint("/endpoint").withSockJS();
}
@Override
public void configureMessageBroker(MessageBrokerRegistry registry) {
registry.enableSimpleBroker("/topic");
registry.setApplicationDestinationPrefixes("/app");
}
}
@Controller
public class MessageController {
@MessageMapping("/topic")
@SendTo("/topic/greetings/{message}")
public String handleMessage(@PathVariable String message){
return "[" + message + "] at " + LocalDate.now();
}
}
还有我的javascript来处理websocket客户端
app.js
var stompClient = null;
function connect() {
var socket = new SockJS('/endpoint');
stompClient = Stomp.over(socket);
stompClient.connect({}, function (frame) {
setConnected(true);
console.log('Connected: ' + frame);
stompClient.subscribe('/topic/greetings/asd', function (message){
console.log("Message received: " + message)
});
});
}
function setConnected(connected) {
$("#connect").prop("disabled", connected);
$("#disconnect").prop("disabled", !connected);
$("#greetings").html("");
}
function disconnect() {
if (stompClient !== null) {
stompClient.disconnect();
}
setConnected(false);
console.log("Disconnected");
}
function sendName() {
stompClient.send("/app/topic", {}, $("#name").val());
}
$(function () {
$("form").on('submit', function (e) {
e.preventDefault();
});
$( "#connect" ).click(function() { connect(); });
$( "#disconnect" ).click(function() { disconnect(); });
$( "#send" ).click(function() { sendName(); });
});
和html页面
index.html
<!DOCTYPE html>
<html>
<head>
<title>Hello WebSocket</title>
<link href="/webjars/bootstrap/css/bootstrap.min.css" rel="stylesheet">
<link href="/main.css" rel="stylesheet">
<script src="/webjars/jquery/jquery.min.js"></script>
<script src="/webjars/sockjs-client/sockjs.min.js"></script>
<script src="/webjars/stomp-websocket/stomp.min.js"></script>
<script src="/app.js"></script>
</head>
<body>
<noscript><h2 style="color: #ff0000">Seems your browser doesn't support Javascript! Websocket relies on Javascript being
enabled. Please enable
Javascript and reload this page!</h2></noscript>
<div id="main-content" class="container">
<div class="row">
<div class="col-md-6">
<form class="form-inline">
<div class="form-group">
<label for="connect">WebSocket connection:</label>
<button id="connect" class="btn btn-default" type="submit">Connect</button>
<button id="disconnect" class="btn btn-default" type="submit" disabled="disabled">Disconnect
</button>
</div>
</form>
</div>
<div class="col-md-6">
<form class="form-inline">
<div class="form-group">
<label for="name">What is your name?</label>
<input type="text" id="name" class="form-control" placeholder="Your name here...">
</div>
<button id="send" class="btn btn-default" type="submit">Send</button>
</form>
</div>
</div>
</div>
</body>
</html>
你好WebSocket
您的浏览器似乎不支持Javascript!Websocket依赖于Javascript
启用。请启用
Javascript并重新加载此页面!
WebSocket连接:
连接
断开
你的名字叫什么?
发送
因此,/app/topic
上的每一条消息都应该发送到/topic/gretings/{message}
,但它不是。我有一个错误:
java.lang.IllegalArgumentException:无法解析值“/topic/greetings/{message}”中的占位符“message”
我读过一些其他文章,人们使用@DestinationVariable
而不是@PathVariable
,但我还有其他错误:
org.springframework.messaging.MessageHandlingException:方法参数类型[class java.lang.String]缺少路径模板变量“message”
这一点是客户端订阅自己的频道,并与其他客户端交换数据,这些客户端将是C#中的桌面应用程序 使用
stompClient.send(“/app/topic”,{},$(“#name”).val()在正文中发送消息时
应该使用@RequestBody
而不是@PathVariable
要获取已发布邮件的内容,请执行以下操作:
@MessageMapping("/topic")
public String handleMessage(@RequestBody String message){
在充实后发送到主题/topic/greetings
的下一步,您可以使用:
@SendTo("/topic/greetings")
将所有内容放在一起将获得来自/app/topic
的消息,并发送给/topic/highlights
@MessageMapping("/topic")
@SendTo("/topic/greetings")
public String handleMessage(@RequestBody String message){
return "[" + message + "] at " + LocalDate.now();
}
如果您想使用@PathVariable
,则应使用以下映射发送消息:
stompClient.send("/app/topic/" + $("#name").val() , {}, {});
并将其定义为如下映射:
@MessageMapping("/topic/{message}")
@SendTo("/topic/greetings")
public String handleMessage(@PathVariable String message){