解析Json数据
简单Json用：JSONObject
嵌套的复杂Json用：GSON
JSONObject ：
private void parseJSON(String jsonData) { try { JSONArray jsonArray = new JSONArray(jsonData); for (int i = 0; i < jsonArray.length(); i++) { JSONObject jsonObject=jsonArray.getJSONObject(i); String id =jsonObject.getString("ID"); Log.d("AA",id); } } catch (Exception e) { e.printStackTrace(); } }
就是这么简单：
Gson 解析嵌套Json数据
Gson2.8.2 链接：https://pan.baidu.com/s/1eRFt9Nc 密码：41sl
Json天气数据
{
"HeWeather6": [
{
"basic": {
"cid": "CN101271506",
"location": "青神",
"parent_city": "眉山",
"admin_area": "四川",
"cnty": "中国",
"lat": "29.83146858",
"lon": "103.84613037",
"tz": "+8.0"
},
"update": {
"loc": "2018-01-09 08:53",
"utc": "2018-01-09 00:53"
},
"status": "ok",
"now": {
"cloud": "5",
"cond_code": "101",
"cond_txt": "多云",
"fl": "-6",
"hum": "89",
"pcpn": "0.0",
"pres": "1031",
"tmp": "0",
"vis": "7",
"wind_deg": "138",
"wind_dir": "东南风",
"wind_sc": "微风",
"wind_spd": "6"
},
"daily_forecast": [
{
"cond_code_d": "101",
"cond_code_n": "101",
"cond_txt_d": "多云",
"cond_txt_n": "多云",
"date": "2018-01-09",
"hum": "51",
"mr": "01:02",
"ms": "13:09",
"pcpn": "0.0",
"pop": "0",
"pres": "1031",
"sr": "08:01",
"ss": "18:24",
"tmp_max": "11",
"tmp_min": "0",
"uv_index": "4",
"vis": "20",
"wind_deg": "0",
"wind_dir": "无持续风向",
"wind_sc": "微风",
"wind_spd": "3"
},
{
"cond_code_d": "100",
"cond_code_n": "101",
"cond_txt_d": "晴",
"cond_txt_n": "多云",
"date": "2018-01-10",
"hum": "46",
"mr": "01:58",
"ms": "13:45",
"pcpn": "0.0",
"pop": "0",
"pres": "1033",
"sr": "08:01",
"ss": "18:25",
"tmp_max": "12",
"tmp_min": "0",
"uv_index": "4",
"vis": "20",
"wind_deg": "0",
"wind_dir": "无持续风向",
"wind_sc": "微风",
"wind_spd": "3"
},
{
"cond_code_d": "100",
"cond_code_n": "101",
"cond_txt_d": "晴",
"cond_txt_n": "多云",
"date": "2018-01-11",
"hum": "45",
"mr": "02:52",
"ms": "14:20",
"pcpn": "0.0",
"pop": "0",
"pres": "1032",
"sr": "08:01",
"ss": "18:25",
"tmp_max": "11",
"tmp_min": "0",
"uv_index": "4",
"vis": "20",
"wind_deg": "0",
"wind_dir": "无持续风向",
"wind_sc": "微风",
"wind_spd": "3"
}
],
"hourly": [
{
"cloud": "7",
"cond_code": "103",
"cond_txt": "晴间多云",
"dew": "-5",
"hum": "46",
"pop": "0",
"pres": "1033",
"time": "2018-01-09 10:00",
"tmp": "1",
"wind_deg": "48",
"wind_dir": "东北风",
"wind_sc": "微风",
"wind_spd": "3"
},
{
"cloud": "5",
"cond_code": "103",
"cond_txt": "晴间多云",
"dew": "-7",
"hum": "32",
"pop": "0",
"pres": "1030",
"time": "2018-01-09 13:00",
"tmp": "4",
"wind_deg": "81",
"wind_dir": "东风",
"wind_sc": "微风",
"wind_spd": "5"
},
{
"cloud": "4",
"cond_code": "103",
"cond_txt": "晴间多云",
"dew": "-7",
"hum": "28",
"pop": "0",
"pres": "1028",
"time": "2018-01-09 16:00",
"tmp": "10",
"wind_deg": "100",
"wind_dir": "东风",
"wind_sc": "微风",
"wind_spd": "4"
},
{
"cloud": "6",
"cond_code": "103",
"cond_txt": "晴间多云",
"dew": "-5",
"hum": "37",
"pop": "0",
"pres": "1032",
"time": "2018-01-09 19:00",
"tmp": "8",
"wind_deg": "223",
"wind_dir": "西南风",
"wind_sc": "微风",
"wind_spd": "4"
},
{
"cloud": "7",
"cond_code": "103",
"cond_txt": "晴间多云",
"dew": "-5",
"hum": "45",
"pop": "0",
"pres": "1036",
"time": "2018-01-09 22:00",
"tmp": "3",
"wind_deg": "335",
"wind_dir": "西北风",
"wind_sc": "微风",
"wind_spd": "7"
},
{
"cloud": "4",
"cond_code": "103",
"cond_txt": "晴间多云",
"dew": "-4",
"hum": "53",
"pop": "0",
"pres": "1035",
"time": "2018-01-10 01:00",
"tmp": "2",
"wind_deg": "355",
"wind_dir": "北风",
"wind_sc": "微风",
"wind_spd": "4"
},
{
"cloud": "5",
"cond_code": "103",
"cond_txt": "晴间多云",
"dew": "-4",
"hum": "57",
"pop": "0",
"pres": "1033",
"time": "2018-01-10 04:00",
"tmp": "0",
"wind_deg": "142",
"wind_dir": "东南风",
"wind_sc": "微风",
"wind_spd": "2"
},
{
"cloud": "5",
"cond_code": "103",
"cond_txt": "晴间多云",
"dew": "-5",
"hum": "58",
"pop": "0",
"pres": "1034",
"time": "2018-01-10 07:00",
"tmp": "0",
"wind_deg": "41",
"wind_dir": "东北风",
"wind_sc": "微风",
"wind_spd": "3"
}
],
"lifestyle": [
{
"brf": "较舒适",
"txt": "白天虽然天气晴好，但早晚会感觉偏凉，午后舒适、宜人。",
"type": "comf"
},
{
"brf": "较冷",
"txt": "建议着厚外套加毛衣等服装。年老体弱者宜着大衣、呢外套加羊毛衫。",
"type": "drsg"
},
{
"brf": "易发",
"txt": "昼夜温差很大，易发生感冒，请注意适当增减衣服，加强自我防护避免感冒。",
"type": "flu"
},
{
"brf": "较适宜",
"txt": "天气较好，无雨水困扰，较适宜进行各种运动，但因气温较低，在户外运动请注意增减衣物。",
"type": "sport"
},
{
"brf": "适宜",
"txt": "天气较好，但丝毫不会影响您出行的心情。温度适宜又有微风相伴，适宜旅游。",
"type": "trav"
},
{
"brf": "最弱",
"txt": "属弱紫外线辐射天气，无需特别防护。若长期在户外，建议涂擦SPF在8-12之间的防晒护肤品。",
"type": "uv"
},
{
"brf": "较适宜",
"txt": "较适宜洗车，未来一天无雨，风力较小，擦洗一新的汽车至少能保持一天。",
"type": "cw"
},
{
"brf": "较差",
"txt": "气象条件较不利于空气污染物稀释、扩散和清除，请适当减少室外活动时间。",
"type": "air"
}
],
"air_now_city": {
"aqi": "73",
"qlty": "良",
"main": "PM2.5",
"pm25": "53",
"pm10": "83",
"no2": "33",
"so2": "6",
"co": "0.8",
"o3": "22",
"pub_time": "2018-01-09 07:30"
}
}
]
}
创建对应的实体类（SerializedName是Json数据的名，下面是对应的自定义名）
/** * 基本信息 */ public class BasicJson { @SerializedName("cid") public String CityWeatherID; ///城市和风天气ID @SerializedName("location") public String CityName; //城市名称 @SerializedName("parent_city") public String Parent_City; //城市的上级城市 @SerializedName("admin_area") public String Admin_Area; //城市所属行政区域 @SerializedName("cnty") public String Cnty; //城市所属国家名称 @SerializedName("lat") public String Lat; //城市经度 @SerializedName("lon") public String Lon; //城市纬度 @SerializedName("tz") public String Tz; //城市所在时区 }
public class LifeStyleJson { @SerializedName("brf") public String Brf; ///生活指数简介 @SerializedName("txt") public String Txt; ///生活指数详细描述 ///生活指数类型 comf：舒适度指数、cw：洗车指数、drsg：穿衣指数、 ///flu：感冒指数、sport：运动指数、trav：旅游指数、uv：紫外线指数、air：空气污染扩散条件指数 @SerializedName("type") public String Type; }
按照以上两个创建对应的实体就行
再加一个Json总的实体（如上面的LifeStyleJson ，是个集合则在下面总实体类中用List声明）
public class ListJson { @SerializedName("basic") public BasicJson Basic; ///城市信息 @SerializedName("update") public UpdateJson Update; ///更新时间 @SerializedName("status") public String Status; ///状态码 @SerializedName("now") public WeatherJson Now; ///实况天气 @SerializedName("daily_forecast") public List<DailyForecastJson> DailyForecast; ///3天天气预报 @SerializedName("hourly") public List<HourJson> HourLy; @SerializedName("lifestyle") public List<LifeStyleJson> LifeStyle; ///生活指数 @SerializedName("air_now_city") public AQIJson AirNowCity; ///空气质量实况
创建解析方法
public static ListJson HandleWeatherResponse(String ResponseStr) { try { JSONObject WeatherJsonList = new JSONObject(ResponseStr); JSONArray WeatherArray = WeatherJsonList.getJSONArray("HeWeather6"); String WeatherContent = WeatherArray.getJSONObject(0).toString(); return new Gson().fromJson(WeatherContent, ListJson.class); //转换成Json对象 } catch (JSONException e) { e.printStackTrace(); } return null; }
提取数据
//展示数据 public void ShowWeatherInfo(ListJson Weatherobject) { if (Weatherobject != null && "ok".equals(Weatherobject.Status)) { String Name = Weatherobject.Basic.CityName; String UpdateTime = Weatherobject.Update.Utc; String Degree = Weatherobject.Now.Tmp + "℃"; String Cond = Weatherobject.Now.CondTxt;
//集合数据 for (DailyForecastJson Forecast : Weatherobject.DailyForecast) {
DateTxt.setText(Forecast.Date);
WeatherInfo.setText(Forecast.CondTxtD);
MaxTxt.setText(Forecast.TmpMax);
MinTxt.setText(Forecast.TmpMin);
}
if (Weatherobject.AirNowCity.Aqi != null) {
AqiTxt.setText(Weatherobject.AirNowCity.Aqi);
Pm25Txt.setText(Weatherobject.AirNowCity.Pm25);
}
for (LifeStyleJson Life : Weatherobject.LifeStyle) {
if (Life.Type.equals("comf")) {
String Comfort = "舒适度：" + Life.Txt;
ComfTxt.setText(Comfort);
}
}
}
