Question

我是云端点的新手。我在Cloud EndPoints中使用Google Map API获取地理信息。我需要解码到JSON String才能获得国家/地区名称，administrator_area_level_1和administrator_area_level_2

这是我的代码。

EndPoints.java

@ApiMethod(name = "getLocation", path = "getLocation")
public StringResponse getlocation(@Named("location") String location) {
    GeoLocation geoLocation = new GeoLocation();
         geoLocation.getCounty();
         geoLocation.getAreaLevel1();
         geoLocation.getAreaLevel2();
   // do some other staff with these values
   return new StringResponse(// some args);
}

GeoLocation.java

public class GeoLocation {

    String out = "";

    public GeoLocation() {

        try {
            URL url = new URL(
                    "http://maps.googleapis.com/maps/api/geocode/json?latlng=40.714224,-73.961452&sensor=true");
            // making connection
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");
            conn.setRequestProperty("Accept", "application/json");
            if (conn.getResponseCode() != 200) {
                throw new RuntimeException("Failed : HTTP error code : " + conn.getResponseCode());
            }

            // Reading data's from url
            BufferedReader br = new BufferedReader(new InputStreamReader((conn.getInputStream())));

            String output;
            System.out.println("Output from Server .... \n");
            while ((output = br.readLine()) != null) {
                // System.out.println(output);
                out += output;
            }

            // How can I decode JSON String(out) 

            conn.disconnect();
        } catch (MalformedURLException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

    public String getOut() {
        return out;
    }

}

我已经使用Gson库在 Android 中工作了，我可以使用这个吗？还是有任何直接的方法来解码它？还是其他更好的方法？我需要在 pom.xml 中添加dependency我正在使用maven。

Answer 1

您可以看到this link了解gson依赖关系或使用最新版本：

> process.binding('util').getPromiseDetails(Promise.resolve({data: [1,2,3]}));
[ 1, { data: [ 1, 2, 3 ] } ]

> process.binding('util').getPromiseDetails(Promise.reject(new Error('no')));
[ 2, Error: no ]

> process.binding('util').getPromiseDetails(new Promise((resolve) => {}));
[ 0, <1 empty item> ]

并使用相同的this post：

<!-- https://mvnrepository.com/artifact/com.google.code.gson/gson -->
<dependency>
    <groupId>com.google.code.gson</groupId>
    <artifactId>gson</artifactId>
    <version>2.8.2</version>
</dependency>

在Java Cloud Endpoints中解码JSON字符串

1 个答案: