后端使用 SpringBoot 集成的 WebSocket 服務(wù)

Java 代碼如下：

配置 WebSocket

@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfig extends AbstractWebSocketMessageBrokerConfigurer {
    @Override
    public void registerStompEndpoints(StompEndpointRegistry stompEndpointRegistry) {
        stompEndpointRegistry.addEndpoint("/endpointSang").withSockJS();
    }

    @Override
    public void configureMessageBroker(MessageBrokerRegistry registry) {
        registry.enableSimpleBroker("/topic");
    }
}

WebSocket 控制器

@Controller
public class WsController {
    @MessageMapping("/welcome")
    @SendTo("/topic/getResponse")
    public ResponseMessage say(RequestMessage message) {
        System.out.println(message.getName());
        return new ResponseMessage("welcome," + message.getName() + " !");
    }
}

現(xiàn)在前端進(jìn)行連接時(shí)會(huì)拋出異常

var ctx = 'ws://localhost:8080'
// 創(chuàng)建一個(gè) Scoket 端點(diǎn)連接
var socket = new SockJS(`${ctx}/endpointSang`)
var stompClient = Stomp.over(socket)
// 鏈接到端點(diǎn)
stompClient.connect({}, frame => {
  console.log('連接到：', frame)
  stompClient.subscribe(`${ctx}/topic/getResponse`, response => {
    console.log('訂閱的主題發(fā)送了消息：', JSON.parse(response.body).responseMessage)
  })
})
// 通過(guò)端點(diǎn)客戶端發(fā)送一個(gè)消息到服務(wù)器
stompClient.send(`${ctx}/welcome`, {}, JSON.stringify({ name: 'rx' }))

// 拋出的異常
main.js:73 Uncaught SyntaxError: The URL's scheme must be either 'http:' or 'https:'. 'ws:' is not allowed.
    at new SockJS (main.js:73)
    at simple-websocket.html:17

但如果是在后端項(xiàng)目下的話就可以使用下面的代碼進(jìn)行調(diào)用

// 這里是空的，不需要指定前綴
var ctx = ''
// 創(chuàng)建一個(gè) Scoket 端點(diǎn)連接
var socket = new SockJS(`${ctx}/endpointSang`)
var stompClient = Stomp.over(socket)
// 鏈接到端點(diǎn)
stompClient.connect({}, frame => {
  console.log('連接到：', frame)
  stompClient.subscribe(`${ctx}/topic/getResponse`, response => {
    console.log('訂閱的主題發(fā)送了消息：', JSON.parse(response.body).responseMessage)
  })
})
// 通過(guò)端點(diǎn)客戶端發(fā)送一個(gè)消息到服務(wù)器
stompClient.send(`${ctx}/welcome`, {}, JSON.stringify({ name: 'rx' }))

所以，發(fā)生了什么？吾輩應(yīng)該怎么做呢？