[我试图通过@ stomp / stompjs和SockJS库使用Spring 4 Websocket和Angular 7,但是它始终返回404,并且与websocket的连接始终保持关闭。
我在Spring的配置代码:
import org.springframework.context.annotation.Configuration;
import org.springframework.messaging.simp.config.MessageBrokerRegistry;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.web.socket.config.annotation.AbstractWebSocketMessageBrokerConfigurer;
import org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker;
import org.springframework.web.socket.config.annotation.StompEndpointRegistry;
@Configuration
@EnableWebSocketMessageBroker
public class SocketConfig extends AbstractWebSocketMessageBrokerConfigurer {
@Override
public void registerStompEndpoints(StompEndpointRegistry registry) {
registry.addEndpoint("/batch-socket").withSockJS();
}
@Override
public void configureMessageBroker(MessageBrokerRegistry registry) {
registry.enableSimpleBroker("/socketio/");
}
}
SocketHandlerService.java发送消息模板
@Service
public class SocketHandlerService extends AbsLogger<SocketHandlerService> implements ApplicationListener<BrokerAvailabilityEvent> {
private final MessageSendingOperations<String> messagingTemplate;
@Autowired
public SocketHandlerService(MessageSendingOperations<String> messagingTemplate) {
this.messagingTemplate = messagingTemplate;
}
public SocketDetails sendRestMessage() {
...some code...
this.messagingTemplate.convertAndSend("/socketio/batchupdate", data);
...some code...
}
}
用于在客户端处理websocket的Angular socket.service.ts
init() {
let connectionUrl = this.baseUrl + "batch-socket";
return new Promise((resolve, reject) => {
let config = new StompConfig();
config.heartbeatOutgoing = 5000;
config.heartbeatIncoming = 5000;
config.webSocketFactory = function () {
return new SockJS(connectionUrl, null, { transports: ['websocket' , 'xhr-streaming','xhr-polling' ] });
}
config.debug = function (str) {
console.log("@socketDebug: " + str)
}
this.client = new Client();
this.client.configure(config);
enableLogs && console.log(this.client);
console.log("@socketSvc: starting connection...");
const _this = this;
this.client.onConnect = function (frame) {
console.log("@socketSvc: connection established.");
console.log(frame);
_this.state = new BehaviorSubject<any>(SocketClientState.ATTEMPTING);
_this.state.next(SocketClientState.CONNECTED);
resolve(frame.headers['user-name']);
}
this.client.onWebSocketClose = function (msg){
console.log("@socketSvc: connection closed.");
console.log(msg);
}
this.client.activate();
});
}
我已经检查了端点URL是否匹配,并且正在使用的服务器和客户端的域也相同。但是,部署后,将显示以下控制台输出:
POST https://exampleWebsite.com/Portal/batch-socket/718/ky4ln33y/xhr_send?t=1576031555275 404 (Not Found)
main.7459b10fe35bab2c58d4.js:179295
@socketDebug: Connection closed to https://exampleWebsite.com/Portal/batch-socket
main.7459b10fe35bab2c58d4.js:179310
@socketSvc: connection closed. main.7459b10fe35bab2c58d4.js:179311
i {type: "close", bubbles: false, cancelable: false, timeStamp: 1576031555344, wasClean: false, …}bubbles: falsecancelable: falsecode: 1006reason: "Sending error: Error: http status 404"timeStamp: 1576031555344type: "close" wasClean: false__proto__: r
main.7459b10fe35bab2c58d4.js:179295
@socketDebug: STOMP: scheduling reconnection in 5000ms
我还查看了用于网络浏览器的开发人员工具以检查网络:network tab
我能否知道引起紧密连接的问题是什么?有时需要一些尝试才能成功建立websocket。其他时间,永远需要成功的连接。
以下代码为我运行!
@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfig extends AbstractWebSocketMessageBrokerConfigurer {
@Override
public void configureMessageBroker(MessageBrokerRegistry config) {
config.enableSimpleBroker("/topic");
config.setApplicationDestinationPrefixes("/app");
}
@Override
public void registerStompEndpoints(StompEndpointRegistry registry) {
registry.addEndpoint("/batch-socket");
registry.addEndpoint("/batch-socket").withSockJS();
}
}
消息处理控制器:
@MessageMapping("/batch-socket")
@SendTo("/topic/messages")
public OutputMessage send(Message message) throws Exception {
String time = new SimpleDateFormat("HH:mm").format(new Date());
return new OutputMessage(message.getFrom(), message.getText(), time);
}
有效负载:
public class Message {
private String from;
private String text;
// getters and setters
}