问题
My error shows up in the console of my browser:
"WebSocket connection to 'ws://localhost:32768/DspClusterWebServices/myHandler' failed: Unexpected response code: 200"
I am using Spring Websockets 4.1.5 and Tomcat 8.0.18. My WebSocketConfigurer implementation class looks like:
@Configuration
@Controller
@EnableWebSocket
public class WebSocketConfig implements WebSocketConfigurer
{
class MyHandler implements WebSocketHandler
{
@Override
public void afterConnectionEstablished(WebSocketSession session) throws Exception
{
System.out.println("afterConntectionEstablished called");
}
...implements rest of functions with a System.out.println and false for supportsPartialMessages()
}
}
@Override registerWebSocketHandlers(WebSocketHandlerRegistry registry)
{
registry.addHandler(myHandler(), "myHandler").withSockJS();
}
@Bean
public WebSocketHandler myHandler()
{
return new MyHandler();
}
}
My testWebsocketClient.js tries to connect with this code, but has a error code of 200:
websocket = new WebSocket("ws://localhost:8080/myApp/myHandler");
I cannot figure out what to try next. I thought that this would cause the afterConnectionEstablished(WebSocketSession session) method to fire? Isn't code 200 good?
回答1:
Please check http://procbits.com/connecting-to-a-sockjs-server-from-native-html5-websocket!
After you append /websocket (to your URL), it will give you the error
Failed to parse Origin header value [null]
;) , which then will in turn lead you to that link.
You'll have to add .setAllowedOrigins("*") to your addHandler() method, and then it could finally work!
回答2:
Have a look at the specification . The server should respond with 101 to signal protocol change from http to ws.
回答3:
As my another answer:[https://stackoverflow.com/a/53272666/2930417][1]
I use springboot 2 +STOMP。
remove .withSockJS(),then everything is ok.
I don't know the reason,but works for me.
回答4:
For those guys like me who use angular + springboot and got this error. please check if you have enabled the redirect or forward all non api endpoint request back to index.html. like:
@RequestMapping(value = "/**/{[path:[^\\.]*}")
public String redirect() {
// Forward to home page so that route is preserved.
return "forward:/index.html";
}
If you do, disable it and you will get 101
回答5:
Don't know if this is too late but a solution that I stumbled upon is simply appending the string /websocket after the websocket endpoint that you declared in the spring boot server. This will help keep both the forwarding logic and connect and establish a websocket connection.
回答6:
Please check that if 'ws://localhost:32768/DspClusterWebServices/myHandler' is correct.
来源：https://stackoverflow.com/questions/29829597/i-get-a-status-200-when-connecting-to-the-websocket-but-it-is-an-error