我正在为我的WebSocket服务器开发一个Spring WebSocket Stomp Client,我收到了相互矛盾的信息。 我找到了两种方法让它工作,而没有太多细节,我想知道哪种方式被认为是实现客户端的“正确”方式。
有人可以帮我理解WebSocketConnectionManager的用途吗?
另外,还有一个问题,我如何保持websocket连接打开,程序运行以接受新消息,而不必编写System.in.read()行。
第一种方式:直接使用SockJsClient
URI uri = new URI("ws://localhost:8080/stomp");
StandardWebSocketClient simpleWebSocketClient = new StandardWebSocketClient();
List<Transport> transports = new ArrayList<>(1);
transports.add(new WebSocketTransport(simpleWebSocketClient));
SockJsClient sockJsClient = new SockJsClient(transports);
sockJsClient.setMessageCodec(new Jackson2SockJsMessageCodec());
StompMessageReceiver messageHandler = new StompMessageReceiver();
StompWebSocketHandler websocketHandler = new StompWebSocketHandler(messageHandler, new StringMessageConverter());
try {
this.webSocketClient.doHandshake(websocketHandler, null, uri).get();
} catch (InterruptedException | ExecutionException e) {
throw new IllegalStateException(e);
}
System.in.read();
第二种方式:使用WebSocketConnectionManager
StandardWebSocketClient simpleWebSocketClient = new StandardWebSocketClient();
List<Transport> transports = new ArrayList<>(1);
transports.add(new WebSocketTransport(simpleWebSocketClient));
SockJsClient sockJsClient = new SockJsClient(transports);
sockJsClient.setMessageCodec(new Jackson2SockJsMessageCodec());
StompMessageHandler messageHandler = new StompMessageHandler();
StompWebSocketHandler websocketHandler = new StompWebSocketHandler(messageHandler, new StringMessageConverter());
WebSocketConnectionManager manager = new WebSocketConnectionManager(sockJsClient, websocketHandler, "ws://localhost:8080/stomp");
manager.start();
System.in.read();
我知道我可以通过使用@Configuration
和@Bean
的注释来简化这一过程,但我正在努力做一个“原始”实现,这样我就能理解一切是如何协同工作的。< / p>
更多信息:
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-websocket</artifactId>
<version>4.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-messaging</artifactId>
<version>4.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>javax.websocket</groupId>
<artifactId>javax.websocket-client-api</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-websocket</artifactId>
<version>8.0.0-RC10</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.5.0</version>
</dependency>
答案 0 :(得分:4)
如果有趣的话,Spring Integration为WebSocketClient提供了一个实现。
是的,内部使用ConnectionManagerSupport
。
以下是test-case,演示了如何从@Configuration
配置它。
但我认为您应该尝试开箱即用的WebSocketHandler
实施 - SubProtocolWebSocketHandler
和StompSubProtocolHandler
。