ClassCastException on onAllMarketTickersEvent stream

[tompee26]

I am getting a class cast exception when using the market ticker event stream.

Caused by: java.lang.ClassCastException: java.util.LinkedHashMap cannot be cast to com.binance.api.client.domain.event.AllMarketTickersEvent

Is anyone else having this issue? Code below for reference.

mWebSocketClient.onAllMarketTickersEvent(new BinanceApiCallback<List<AllMarketTickersEvent>>() {
    @Override
    public void onResponse(List<AllMarketTickersEvent> events) throws BinanceApiException {
        Log.d(TAG, events.get(0).toString());
    }
});

[tompee26]

I think the reason here is that Q A v q cannot be parsed as long. Maybe because of a recent update.

[MetalMiner]

Yes, I am facing the same issue and it is really annoying. Pleace fix this fast!

[MetalMiner]

The problem is the constructor

public BinanceApiWebSocketListener(BinanceApiCallback<T> callback) { this.callback = callback; this.eventTypeReference = new TypeReference<T>() {}; }

You can't get the Typereference of the callback that way. As a quick fix change the onMessage method of the same class as follows:

@Override public void onMessage(WebSocket webSocket, String text) { if (webSocket.request().url().toString().endsWith("ticker@arr")) { eventTypeReference = (TypeReference<T>) new TypeReference<List<AllMarketTickersEvent>>(){}; } ObjectMapper mapper = new ObjectMapper(); try { T event = null; if (eventClass == null) { event = mapper.readValue(text, eventTypeReference); } else { event = mapper.readValue(text, eventClass); } callback.onResponse(event); } catch (IOException e) { throw new BinanceApiException(e); } }

This is only a temporary solution of course.

Furthermore you have to change the type of Q A v q in AllMarketTickersEvent to Double as mentioned before.

[joaopsilva]

Hi everyone, I'm unable to reproduce this problem, please make sure you update your repository and you're using the latest version, since there were some recent updates on the websocket-based client.

[joaopsilva]

For reference, I'm using Java(TM) SE Runtime Environment (build 1.8.0_60-b27)

[MetalMiner]

I think this is an issue related to the Runtime Environment. I switched to yours an it is working fine. When I am using my default which is 1.8.0_144 it is throwing errors. Could you pleace consider testing the API with newer Runtime versions?

[0xParts]

Have the same problem. Here is another example for a quick fix:

            List<AllMarketTickersEvent> tick = new ArrayList<AllMarketTickersEvent>();
            client.onAllMarketTickersEvent(response -> {
                    String str = response.toString();
                    int i=0, c;
                    for(int x = 0; x < response.size(); x++) {
                            tick.add(new AllMarketTickersEvent());
                            i = str.indexOf('s', i)+2;
                            c = str.indexOf(',', i);
                            tick.get(x).setSymbol(str.substring(i, c));
                            i = str.indexOf('c', i)+2;
                            c = str.indexOf(',', i);
                            tick.get(x).setCurrentDaysClosePrice(Double.parseDouble(str.substring(i, c)));                                                                             
                    }       
            });

[gokmenkisakol]

Hi, I used this code;

for (Iterator iter = response.iterator(); iter.hasNext(); )
{
ObjectMapper mapper = new ObjectMapper();
AllMarketTickersEvent allMarketTickersEvent = mapper.convertValue(iter.next(), AllMarketTickersEvent.class);
}

[mjwchapman]

Pull request #117 fixes this issue.

[wrone]

Still not fixed? Struggling with it 👎

[joaopsilva]

This is now fixed, please update your repo.