Question

我有以下JSON结果：
这是天气结果我的目标是首先获得城市名称然后根据列表中的一个城市，请求一个属性

{
  "response": {
  "version":"0.1",
  "termsofService":"http://www.wunderground.com/weather/api/d/terms.html",
  "features": {
  "hourly": 1
  ,
  "lang": 1
  }
        , "results": [
        {
        "name": "Al-Arz",
        "city": "Al-Arz",
        "state": "",
        "country": "LB",
        "country_iso3166":"LB",
        "country_name":"Lebanon",
        "zmw": "00000.1.40105",
        "l": "/q/zmw:00000.1.40105"
        }
        ,
        {
        "name": "Beirut",
        "city": "Beirut",
        "state": "",
        "country": "LB",
        "country_iso3166":"LB",
        "country_name":"Lebanon",
        "zmw": "00000.1.40100",
        "l": "/q/zmw:00000.1.40100"
        }
        ,
        {
        "name": "Dahr Baidar",
        "city": "Dahr Baidar",
        "state": "",
        "country": "LB",
        "country_iso3166":"LB",
        "country_name":"Lebanon",
        "zmw": "00000.1.40110",
        "l": "/q/zmw:00000.1.40110"
        }
        ,
        {
        "name": "Houche-Al-Oumara",
        "city": "Houche-Al-Oumara",
        "state": "",
        "country": "LB",
        "country_iso3166":"LB",
        "country_name":"Lebanon",
        "zmw": "00000.1.40101",
        "l": "/q/zmw:00000.1.40101"
        }
        ,
        {
        "name": "Merdjayoun",
        "city": "Merdjayoun",
        "state": "",
        "country": "LB",
        "country_iso3166":"LB",
        "country_name":"Lebanon",
        "zmw": "00000.1.40104",
        "l": "/q/zmw:00000.1.40104"
        }
        ,
        {
        "name": "Rayack",
        "city": "Rayack",
        "state": "",
        "country": "LB",
        "country_iso3166":"LB",
        "country_name":"Lebanon",
        "zmw": "00000.1.40102",
        "l": "/q/zmw:00000.1.40102"
        }
        ,
        {
        "name": "Tripoli",
        "city": "Tripoli",
        "state": "",
        "country": "LB",
        "country_iso3166":"LB",
        "country_name":"Lebanon",
        "zmw": "00000.1.40103",
        "l": "/q/zmw:00000.1.40103"
        }
        ]
    }
}

我怎样才能得到所有城市的名字？
提前谢谢。

Answer 1

您可以将其视为json对象。请按照以下步骤操作

将其转换为json对象。
然后使用getString（）方法将“results”的值转换为一个数组。
然后将此结果转换为json数组。
然后使用getString方法逐个遍历json数组广告，您可以获取所有城市的值。

Answer 2

JSONObject rootObject = (JSONObject)new JSONTokener(yourJsonString).nextValue();
JSONObject responseObject = rootObject.getJSONObject("response");
JSONArray cityArray = responseObject.getJSONArray("results");
List<String> listWithCityNames = new ArrayList<String>();

for(int i = 0; i< cityArray.lenght();i++){
  listWithCityNames.add(cityArray.getJSONObject(i).getString("name"));

 }

for(String city:listWithCityNames){
   System.out.println(city);
 }

此代码段解析var yourJsonString中的json字符串，并在json的name对象内的results数组中收集属性response。如果需要，添加Try/Catch块。

从嵌套的JSON结果中获取JSON对象

2 个答案: