Question

我已经开发了REST网络服务，并被android客户端使用。该网络服务工作正常，但有时android volley遇到了com.android.volley.ServerError。如果我用邮递员检查网址，一切正常。该问题仅由少数几个用户引起，我无法重现该错误。

这是我的排球要求：

public void requestURL(final RestCallback callback) {

    Log.d("JSON", url);

    JsonArrayRequest jsonObjectRequest = new JsonArrayRequest
            (Request.Method.GET, url, null, new Response.Listener<JSONArray>() {
                @Override
                public void onResponse(JSONArray response) {

                    callback.onSuccess(response);

                }


            }, new Response.ErrorListener() {

                @Override
                public void onErrorResponse(VolleyError error) {

                    Log.d("JSON", "onErrorResponse: " + url);
                    String errorText = null;

                    if (error instanceof TimeoutError || error instanceof NoConnectionError) {
                        Log.d("Error", "Timeouterror");
                        errorText = context.getString(R.string.error_timeout);
                    } else if (error instanceof ServerError) {
                        Log.d("Error", "Servererror");
                        errorText = context.getString(R.string.error_server);
                    } else if (error instanceof NetworkError) {
                        Log.d("Error", "Servererror");
                        errorText = context.getString(R.string.error_network);
                    } else if (error instanceof ParseError) {
                        Log.d("Error", "Parseerror");
                        errorText = context.getString(R.string.error_parse);
                    }


                    Crashlytics.logException(new Throwable("Errornachricht: " + error.getMessage() + " Error: " + error.toString() + "\n URL: " + url + "\n Cause: "  +error.getCause() + " Stacktrace: " + error.getStackTrace()));
                    callback.onError(errorText);

                }
            }) {


        @Override
        public Map<String, String> getHeaders() {
            return Security.getAuth();
        }

        @Override
        protected Map<String, String> getParams() throws AuthFailureError {
            return super.getParams();
        }



    };


    RequestQueue requestQueue = Volley.newRequestQueue(context);


    //sets time for retry connection
    jsonObjectRequest.setRetryPolicy(new DefaultRetryPolicy( 0, DefaultRetryPolicy.DEFAULT_MAX_RETRIES, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));

    jsonObjectRequest.setShouldCache(false);
    //Adding request to the queue
    requestQueue.add(jsonObjectRequest);


}

还有名为bei getHeaders的方法getAuth：

public static Map<String, String> getAuth() {
    String credentials = "username" + ":" + "password";
    String base64EncodedCredentials = Base64.encodeToString(credentials.getBytes(), Base64.NO_WRAP);
    HashMap<String, String> headers = new HashMap<>();
    headers.put("Accept","application/json");
    headers.put("Content-Type","application/json");
    headers.put("Authorization", "Basic " + base64EncodedCredentials);
    return headers;
}

错误日志：

有人知道为什么我会收到此错误吗？

Answer 1

我认为有时API响应不是有效的JsonArray，在那时它会引发服务器错误。 API响应是一个“空”或一个明智的jsonObject

Android Volley ServerError GET方法

1 个答案: