我正在尝试使用以下代码从 appengine 访问 google places api:
String PLACES_DETAILS_URL = "https://maps.googleapis.com/maps/api/place/details/json";
// setup up the HTTP transport
HttpTransport transport = new UrlFetchTransport();
// add default headers
GoogleHeaders defaultHeaders = new GoogleHeaders();
transport.defaultHeaders = defaultHeaders;
transport.defaultHeaders.put("Content-Type", "application/json");
JsonHttpParser parser = new JsonHttpParser();
parser.jsonFactory = new JacksonFactory();
transport.addParser(parser);
// build the HTTP GET request and URL
HttpRequest request = transport.buildGetRequest();
request.setUrl(PLACES_DETAILS_URL);
GenericData data = new GenericData();
data.put("reference", restaurantGoogleId);
data.put("sensor", "false");
data.put("key", ApplicationConstants.GoogleApiKey);
JsonHttpContent content = new JsonHttpContent();
content.jsonFactory=new JacksonFactory();
content.data = data;
request.content = content;
try {
HttpResponse response = request.execute();
String r = response.parseAsString();
r=r;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
我不知道这是否是推荐的方式。如果是这样,为什么这不起作用?如果我直接在浏览器中发出请求,它会起作用,但是使用此代码它总是返回“请求被拒绝”。
提前致谢。