Errore di cloud di Google Cloud Messaging 400: Richiesta errata

Question

Sto tentando di inviare un messaggio tramite GCM (Google Cloud Messaging). Mi sono registrato tramite le API di Google, posso inviare un regID al mio sito Web (che è un back-end di Google App Engine) da più telefoni di prova Android. Tuttavia, non posso inviare nulla a GCM da Google App Engine. Ecco cosa sto cercando di usare.

regId = "APA91b..." 

    json_data = {"collapse_key" : "Food-Promo", "data" : { 
        "Category" : "FOOD", 
        "Type": "VEG", 
       }, "registration_ids": [regId], 
    } 


    url = 'https://android.googleapis.com/gcm/send' 




    apiKey = "AI..." 
    myKey = "key=" + apiKey 

    headers = {'Content-Type': 'application/json', 'Authorization': myKey} 
    data = urllib.urlencode(json_data) 
    data2 = {"title": title} 
    data3 = urllib.urlencode(data2) 

    req = urllib2.Request(url, data, headers) 


    f = urllib2.urlopen(req) 
    response = f.read() 
    f.close() 

    logging.debug("***!!!!!!!WriteEntry TEST ----- Response: " + response) 

Ed ecco l'errore che sto ricevendo.

Traceback (most recent call last): 
    File "/base/python_runtime/python_lib/versions/1/google/appengine/ext/webapp/_webapp25.py", line 703, in __call__ 
    handler.post(*groups) 
    File "/base/data/home/apps/s~journaltestza/26.360625174851783344/main.py", line 213, in post 
    f = urllib2.urlopen(req) 
    File "/base/python_runtime/python_dist/lib/python2.5/urllib2.py", line 124, in urlopen 
    return _opener.open(url, data) 
    File "/base/python_runtime/python_dist/lib/python2.5/urllib2.py", line 387, in open 
    response = meth(req, response) 
    File "/base/python_runtime/python_dist/lib/python2.5/urllib2.py", line 498, in http_response 
    'http', request, response, code, msg, hdrs) 
    File "/base/python_runtime/python_dist/lib/python2.5/urllib2.py", line 425, in error 
    return self._call_chain(*args) 
    File "/base/python_runtime/python_dist/lib/python2.5/urllib2.py", line 360, in _call_chain 
    result = func(*args) 
    File "/base/python_runtime/python_dist/lib/python2.5/urllib2.py", line 506, in http_error_default 
    raise HTTPError(req.get_full_url(), code, msg, hdrs, fp) 
HTTPError: HTTP Error 400: Bad Request 

Grazie!

Answer 1

A cosa servono i dati 2 e 3? I dati che si sta scrivendo non era adeguata JSON quindi è necessario utilizzare json.dumps (dati) .Codice dovrebbe essere come questo:

json_data = {"collapse_key" : "Food-Promo", "data" : { 
       "Category" : "FOOD", 
       "Type": "VEG", 
      }, "registration_ids": [regId], 
} 


url = 'https://android.googleapis.com/gcm/send' 
apiKey = "AI..." 
myKey = "key=" + apiKey 
data = json.dumps(json_data) 
headers = {'Content-Type': 'application/json', 'Authorization': myKey} 
req = urllib2.Request(url, data, headers) 
f = urllib2.urlopen(req) 
response = json.loads(f.read()) 
reply = {} 
if response ['failure'] == 0: 
    reply['error'] = '0' 
else: 
    response ['error'] = '1' 
return HttpResponse(json.dumps(reply), mimetype="application/javascript") 

Answer 2

Provare a usare python-gcm. Può gestire anche gli errori.

Answer 3

Ecco come ho finito per risolverlo, ma funziona anche sopra.

def sendGCM(self, regid, email, entry_id, date_modified, kind): 


    url = 'https://android.googleapis.com/gcm/send' 
    apiKey = _MY_API_KEY 
    myKey = "key=" + apiKey 

    json_data = { "registration_id": regid, "data" : { 
     "entry_id" : entry_id, 
     "email": email, 
     "date_modified": date_modified, 
     "kind": kind, 
     "reg_id": regid, 
     }, 
    } 

    ### Get regids 
    registration_data = { 
     "registration_ids": [regid], 
    } 

    headers = {'Content-Type': 'application/json', 'Authorization': myKey} 
    data = urllib.urlencode(json_data)    
    req = urllib2.Request(url, data) 
    req.add_header("Authorization", myKey)    

    f = urllib2.urlopen(req) 
    response = f.read() 
    f.close()