How to get the network error response message from server side using Volley library?

Question

I am trying to get the HTTP status code like 400, 401, or 500 from server side. I tried the code below but the message was null.

new Response.ErrorListener() {
    @Override
    public void onErrorResponse(VolleyError error) {
        Log.e("error fetched/////", "" + error.toString());
        // listener.onError(error.toString());
        String json = null;
        NetworkResponse response = error.networkResponse;
        int errcode = error.networkResponse.statusCode;

        Log.e("errcode","errcode"+error.networkResponse.toString());

        Log.e("HttpStatus", String.valueOf(errcode));

        if(HttpStatus.SC_SWITCHING_PROTOCOLS==error.networkResponse.statusCode){
            Log.e("HttpStatus","HttpStatus");
        }
        if (response != null && response.data != null) {
            switch (response.statusCode) {
                case 400:
                    json = new String(response.data);
                    json = trimMessage(json, "message");
                    listener.onError(error.toString());
                    Log.e("listenerpost", "listenerpost" + error.getMessage());
                    break;

                case 401:
                    json = new String(response.data);
                    json = trimMessage(json, "message");
                    listener.onError(error.toString());
                    Log.e("listener1", "listener" + error.networkResponse.toString());
                    break;

                case 500:
                    json = new String(response.data);
                    json = trimMessage(json, "message");
                    listener.onError(error.toString());
                    Log.e("listener500", "listener500" + error.networkResponse.toString());
            }
            //Additional cases
        }
    }
})

Please help me to fix this issue.

what is the response you get from this: Log.e("errcode","errcode"+error.networkResponse.toString()); — kalin, Apr 04 '16 at 11:05
errcode com.android.volley.NetworkResponse@1b5fef4b this is the response from that. @djodjo — karthik, Apr 04 '16 at 11:18
can do a log of json after " json = new String(response.data); " and can u paste your trimMessage also as it seems the issue is there — kalin, Apr 04 '16 at 11:26
also by "got message as null." you mean 'json' variable or something else ? — kalin, Apr 04 '16 at 11:32
Log.e("listenerpost", "listenerpost" + error.getMessage()); here i got null message. — karthik, Apr 04 '16 at 11:56
I have checked "json = new String(response.data)" here i have used wrong param for getting error message. Now working good using error_description param. Thanks @djodjo {"error":"invalid_grant","error_description":"Provided Authorization Grant is invalid."} — karthik, Apr 04 '16 at 12:16
yep i added an answer before if this want you want you can accept it :) — kalin, Apr 04 '16 at 12:29

score 0 · Answer 1 · edited Aug 05 '16 at 21:54

0

Override this method:

@Override
protected Response<byte[]> parseNetworkResponse(NetworkResponse response) {
      // Here is what you need!
      response.statuscode;
}

edited Aug 05 '16 at 21:54

Laurel

5,965
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answered Apr 04 '16 at 10:41

Robert Banyai

1,329
12
14

Sry, you can remove that line. Copy paste.. :D – Robert Banyai Apr 04 '16 at 10:44

score 0 · Answer 2 · answered Apr 04 '16 at 12:11

The issues is that you are trying to get

error.getMessage()

while this is null for the erros you are trying because BasicNetwork does:

else if (statusCode >= 400 && statusCode <= 499) {
                        // Don't retry other client errors.
                        throw new ClientError(networkResponse);
                    } else if (statusCode >= 500 && statusCode <= 599) {
                        if (request.shouldRetryServerErrors()) {
                            attemptRetryOnException("server",
                                    request, new ServerError(networkResponse));
                        }

Basically error is just an Exception class and message for ClientError and ServerError is not set.

the error information from the server is in

error.networkResponse

and the way you get it should get the message from the server

json = new String(response.data);

How to get the network error response message from server side using Volley library?

2 Answers2