[英]Get Array and it's objects from JSON using GSON
我有这个字符串:
{"cod":"200","message":0.0049,"cnt":40,"list":[{"dt":1549346400,"main":{"temp":-1.04,"temp_min":-1.04,"temp_max":-1.04,"pressure":1023.46,"sea_level":1025.98,"grnd_level":1023.46,"humidity":92,"temp_kf":0},"weather":[{"id":600,"main":"Snow","description":"небольшой снегопад","icon":"13n"}],"clouds":{"all":80},"wind":{"speed":3.26,"deg":226.502},"rain":{},"snow":{"3h":1.485},"sys":{"pod":"n"},"dt_txt":"2019-02-05 06:00:00"},{"dt":1549357200,"main":{"temp":-1.04,"temp_min":-1.04,"temp_max":-1.04,"pressure":1023.78,"sea_level":1026.44,"grnd_level":1023.78,"humidity":95,"temp_kf":0},"weather":[{"id":600,"main":"Snow","description":"небольшой снегопад","icon":"13d"}],"clouds":{"all":80},"wind":{"speed":5.32,"deg":243.5},"rain":{},"snow":{"3h":1.115},"sys":{"pod":"d"},"dt_txt":"2019-02-05 09:00:00"}],"city":{"id":536203,"name":"Sankt-Peterburg","coord":{"lat":59.9167,"lon":30.25},"country":"RU"}}
这是一个JSON,我做了这个类来获取数据
public class FiveDaysWeather {
private long dt;
private List<WeatherTomorrow> weather = null;
private Temp main;
private Wind wind;
public long getDt() {
return dt;
}
public void setDt(long dt) {
this.dt = dt;
}
public List<WeatherTomorrow> getWeatherTomorrow() {
return weather;
}
public void setWeatherTomorrow(List<WeatherTomorrow> weather) {
this.weather = weather;
}
public Temp getTemp() {
return main;
}
public void setTemp(Temp main) {
this.main = main;
}
public Wind getWind() {
return wind;
}
public void setWind(Wind wind) {
this.wind = wind;
}
}
public class WeatherTomorrow {
private String icon;
private String description;
private String main;
private long id;
public String getIcon() {
return icon;
}
public void setIcon(String icon) {
this.icon = icon;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getMain() {
return main;
}
public void setMain(String main) {
this.main = main;
}
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
}
因此,我还需要从该字符串中获取有关天气(温度,湿度,描述和风)的数据,该数据位于第一个dt“ 1549346400”中的数组“ list”中。 我做了一个JSON数组,并把“列表”作为JSONArray。 han,我从列表“ dt 1549346400”中获取了JSONObject,并使用getter获取数据。
现在,我需要使用Google GSON做同样的事情。 阅读github上的指南,但仍然不了解如何从JSON获取0索引数据。
String jsonStr = "{}";
Gson gson = new Gson();
JsonElement element = gson.fromJson (jsonStr, JsonElement.class);
JsonObject jsonObj = element.getAsJsonObject();
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