Question

我无法弄清楚为什么我的json Parsing无效。这是我正在使用的Api。也是完整json输出http://api.openweathermap.org/data/2.5/forecast/daily?zip=85008&amode=json&units=metric&cnt=7&APPID=3c6fee6e3e8b5764212701d9535a36d5

的链接

{  
"city": {  
        "id": 5308655,  
        "name": "Phoenix",  
        "coord": {  
            "lon": -112.074043,  
            "lat": 33.44838  
        },  
        "country": "US",  
        "population": 0  
    },  
    "cod": "200",  
    "message": 0.014,  
    "cnt": 7,  
    "list": [  
        {  
            "dt": 1454871600,  
            "temp": {  
                "day": 10.46,  
                "min": 10.46,  
                "max": 10.46,  
                "night": 10.46,  
                "eve": 10.46,  
                "morn": 10.46  
            },  
            "pressure": 977.01,  
            "humidity": 32,  
            "weather": [  
                {  
                    "id": 800,  
                    "main": "Clear",  
                    "description": "sky is clear",  
                    "icon": "01n"  
                }  
            ],  
            "speed": 4.1,  
            "deg": 45,  
            "clouds": 0  
        },  
        {  
            "dt": 1454958000,    
            "temp": {  
                "day": 16.88,  
                "min": 3.31,  
                "max": 24.29,  
                "night": 11.29,  
                "eve": 23.78,  
                "morn": 4.31  
            },  
            "pressure": 979.15,  
            "humidity": 30,  
            "weather": [  
                {  
                    "id": 800,  
                    "main": "Clear",  
                    "description": "sky is clear",  
                    "icon": "01d"  
                }  
            ],  
            "speed": 2.41,  
            "deg": 52,  
            "clouds": 0  
        },

我想从每一天获得最低和最高温度。这是我的代码。抛出的异常是预期的BEGIN_OBJECT，但在第1行第190列是NUMBER。感谢您的任何帮助，谢谢！

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    ListView listView =(ListView) findViewById(R.id.main_activity_list);

    arrayAdapter = new ArrayAdapter<>(
            this,
            android.R.layout.simple_list_item_1,
            android.R.id.text1,
            new ArrayList<List1>());

    listView.setAdapter(arrayAdapter);
}

@Override
protected void onResume() {
    super.onResume();

    HttpLoggingInterceptor interceptor = new HttpLoggingInterceptor();
    interceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
    OkHttpClient client = new OkHttpClient.Builder().addInterceptor(interceptor).build();

    Retrofit retrofit = new Retrofit.Builder()
            .baseUrl("http://api.openweathermap.org")
            .client(client)
            .addConverterFactory(GsonConverterFactory.create())
            .build();

    WeatherAPI weatherAPI = retrofit.create(WeatherAPI.class);

    Call<Weather> call = weatherAPI.loadWeather("85008", "json", "metric", "7", "3c6fee6e3e8b5764212701d9535a36d5");
    call.enqueue(this);
}

@Override
public void onResponse(Call<Weather> call, Response<Weather> response) {
    arrayAdapter.clear();
    arrayAdapter.addAll(response.body().list);
}

@Override
public void onFailure(Call<Weather> call, Throwable t) {
    Log.v(MainActivity.class.getSimpleName(), t.getLocalizedMessage());
}


public interface WeatherAPI {
    @GET("/data/2.5/forecast/daily")
    Call<Weather> loadWeather(
            @Query("zip")String zip,
            @Query("amode")String amode,
            @Query("units")String units,
            @Query("cnt")String cnt,
            @Query("APPID")String APIKey);
}



public class Weather{
    public List<List1> list;
}


public class List1{
    double dt;
    public HashMap<String, Temps> temp;

    @Override
    public String toString() {
        String output = "Min and High ";

        for(Map.Entry<String,Temps> temps:temp.entrySet()){
            output += temps.getKey() + " = " + temps.getValue().min;
        }
        return output;


    }
}


public class Temps{
    double min;
    double max;

}

Answer 1

感谢Yazan，答案是

public class Weather{
    public List<List1> list;
}


public class List1{
    double dt;
    public Temps temp;


    @Override
    public String toString() {
        return "List1{" +
                "temp min = " + temp.min + " temp max " + temp.max + " dt = "+ dt+
                '}';
    }
}


public class Temps{
    double min;
    double max;
}

}

其中Temps不是由散列图显示，而是由单个对象显示。我希望这可以帮助我认识的人帮助我。

Answer 2

temp不是一个数组，它的类对象。

你应该知道改造的一件事是不支持直接哈希映射检索（Pojo方法）。

public HashMap<String, Temps> temp; - 这种做法是错误的。

public Temps temp; - 这是正确的。

如果您想将回复存储在HashMap中，还有其他一些解决方法，您应该看一下。

无法正确解析Json使用改造

2 个答案: