Question

我正在使用我从google places api

检索的跟随json对象

{

    "debug_info":[
    ],
    "html_attributions":[
    ],
    "result":{
        "address_components":[
            {
                "long_name":"109",
                "short_name":"109",
                "types":[
                    "street_number"
                ]
            },
            {
                "long_name":"Torstraße",
                "short_name":"Torstraße",
                "types":[
                    "route"
                ]
            },
            {
                "long_name":"Mitte",
                "short_name":"Mitte",
                "types":[
                    "sublocality",
                    "political"
                ]
            },
            {
                "long_name":"Mitte",
                "short_name":"Mitte",
                "types":[
                    "sublocality",
                    "political"
                ]
            },
            {
                "long_name":"Berlin",
                "short_name":"Berlin",
                "types":[
                    "locality",
                    "political"
                ]
            },
            {
                "long_name":"Berlin",
                "short_name":"Berlin",
                "types":[
                    "administrative_area_level_1",
                    "political"
                ]
            },
            {
                "long_name":"Germany",
                "short_name":"DE",
                "types":[
                    "country",
                    "political"
                ]
            },
            {
                "long_name":"10119",
                "short_name":"10119",
                "types":[
                    "postal_code"
                ]
            }
        ],
        "adr_address":"\u003cspanclass=\"street-address\"\u003eTorstraße109\u003c/span\u003e,\u003cspanclass=\"postal-code\"\u003e10119\u003c/span\u003e\u003cspanclass=\"locality\"\u003eBerlin\u003c/span\u003e,\u003cspanclass=\"country-name\"\u003eGermany\u003c/span\u003e",
        "formatted_address":"Torstraße109,10119Berlin,Germany",
        "geometry":{
            "location":{
                "lat":52.5300431,
                "lng":13.40297
            }
        },
        "icon":"http://maps.gstatic.com/mapfiles/place_api/icons/geocode-71.png",
        "id":"18c00ced59b4a7fb929dde10a01169517666eec5",
        "name":"Torstraße109",
        "reference":"CpQBiQAAAGrYOH9GhUIR5_9XJm8YPZYoudNVoYeIWwD1-zFzjdUp2eKujIt85bUM78FWiY9OgGm2pPoxnCjE5EMhXNz9hiPcLLybacpdSQ10x0mO8UQNs1Mj-EyjGMfBaowMSAxeye_2aDvCyJEk5JAkzTkqXenGi60Dx24o5zKTH1nt1yDBJ3BlKb7Uaas6dBTz2GoqKBIQNFg_NmrCnRGgLxw5VEvtghoU6fl4owiC-5mNZ5RCjS976-S1fyQ",
        "types":[
            "street_address"
        ],
        "url":"https://maps.google.com/maps/place?q=Torstra%C3%9Fe+109,+10119+Berlin,+Germany&ftid=0x47a851e486a78201:0xec18bf6093c5c499",
        "vicinity":"Mitte"
    },
    "status":"OK"

}

我想要拉出来的唯一属性是lat，lng和formated_address。

使用杰克逊最有效率的方法是什么？

我知道我可以写一个自定义反序列化器，但是我必须多次调用jsonParser.nextToken。

有什么更好的方法可以解决这个问题？

修改

我能想出的最好的时刻就是这个

public class LocationDeserializer extends JsonDeserializer<Location> {
    @Override
    public Location deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException, JsonProcessingException {
        Location location = new Location();

        int len = 100;
        for (int i = 0; i < len; ++i) {
            String currentName = jsonParser.getCurrentName();
            if (currentName != null) {
                if (jsonParser.getCurrentName().equals("formatted_address")) {
                    location.setDescription(jsonParser.getText());
                } else if (jsonParser.getCurrentName().equals("lat")) {
                    location.setLatitude(jsonParser.getDoubleValue());
                } else if (jsonParser.getCurrentName().equals("lng")) {
                    location.setLongitude(jsonParser.getDoubleValue());
                    break;
                }
            }
            jsonParser.nextValue();
        }
        return location;
    }
}

Answer 1

为什么你没有按照它的价值拿起钥匙？

JSONObject json = new JSONObject(response);

响应是您从Google收到的回复。

然后获取你的价值观：

JSONObject address = json.getJSONObject("result");
String formattedAddress = address.getString("formatted_address");


JSONObject locationData = address.getJSONObject("geometry").getJSONObject("location");
Location location = new Location();
location.setLatitude(locationData.getDouble("lat"));
location.setLongitude(locationData.getDouble("lng"));

您需要导入

import org.json.JSONObject;

从Big Json对象获取2个值

1 个答案: