In python, ValueError: No JSON object could be decoded

Question

我正在尝试将我的代码与 google 地图 api(地理编码 API) 键连接。 但是当我 运行 我的代码时，会发生 ValueError。我不知道为什么。 这可能很愚蠢，但请帮助我。

这是我的 python 代码。

import httplib2 
import json 

def getGeocodeLocation(inputString): 
    google_api_key = "MY_API_KEY" 
    locationString = inputString.replace(" ", "+") 
    url = ('https://maps.googleapis.com/maps/api/geocode/json?address=%s & key=%s' % (locationString, google_api_key)) 
    h = httplib2.Http() 
    response, content = h.request(url, 'GET') 
    result = json.loads(content) 
    print "response header: %s \n \n" % response 
    return result

这是错误。

>>> from geocode import getGeocodeLocation
>>> getGeocodeLocation("Dalls, Texas")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "geocode.py", line 10, in getGeocodeLocation
    result = json.loads(content)
  File "/usr/lib/python2.7/json/__init__.py", line 339, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python2.7/json/decoder.py", line 364, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python2.7/json/decoder.py", line 382, in raw_decode
    raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded

谢谢。

+

当我编辑代码时，

    response, content = h.request(url, 'GET') 
    result = json.loads(content) 
    print "response header: %s \n \n" % response 

至

    response, content = h.request(url, 'GET')  
    print "response header: %s \n \n" % response 
    result = json.loads(content)

结果是这样的。

{u'status': u'OK', 
u'results': 
    [
    {u'geometry': 
        {u'location_type': u'APPROXIMATE', 
        u'bounds': 
            {u'northeast': {u'lat': 33.0237921, u'lng': -96.4637379}, 
            u'southwest': {u'lat': 32.617537, u'lng': -96.999347}}, 
        u'viewport': 
            {u'northeast': {u'lat': 33.0237921, u'lng': -96.4637379}, 
            u'southwest': {u'lat': 32.617537, u'lng': -96.999347}}, 
        u'location': {u'lat': 32.7766642, u'lng': -96.79698789999999}
        }, 
    u'address_components': 
        [
        {u'long_name': u'Dallas', 
        u'types': [u'locality', u'political'], 
        u'short_name': u'Dallas'}, 
        {u'long_name': u'Dallas County', 
        u'types': [u'administrative_area_level_2', u'political'], 
        u'short_name': u'Dallas County'}, 
        {u'long_name': u'Texas', 
        u'types': [u'administrative_area_level_1', u'political'], 
        u'short_name': u'TX'}, 
        {u'long_name': u'United States', 
        u'types': [u'country', u'political'], 
        u'short_name': u'US'}
        ], 
    u'place_id': u'ChIJS5dFe_cZTIYRj2dH9qSb7Lk', 
    u'formatted_address': u'Dallas, TX, USA', 
    u'types': [u'locality', u'political']
    }
    ]
}

Answer 1

您的请求有误。状态码为400 Bad Request，您回复的内容为：

您的客户发出了格式错误或非法的请求。这就是我们所知道的。

这一行似乎有错误：

url = ('https://maps.googleapis.com/maps/api/geocode/json?address=%s & key=%s' % (locationString, google_api_key))

& 符号周围不应有空格：

url = ('https://maps.googleapis.com/maps/api/geocode/json?address=%s&key=%s' % (locationString, google_api_key))