在Java Android中从嵌套的JSON对象中获取数据

String jsonString = "{\"name\":\"John\",\"age\":30,\"address\":{\"city\":\"New York\",\"country\":\"USA\"}}";
JSONObject jsonObject = new JSONObject(jsonString);

JSONObject addressObject = jsonObject.getJSONObject("address");

String city = addressObject.getString("city");
int age = jsonObject.getInt("age");

String jsonString = "{\"name\":\"John\",\"age\":30,\"address\":{\"city\":\"New York\",\"country\":\"USA\"}}";
try {
    JSONObject jsonObject = new JSONObject(jsonString);
    JSONObject addressObject = jsonObject.getJSONObject("address");
    String city = addressObject.getString("city");
    int age = jsonObject.getInt("age");
    System.out.println("City: " + city);
    System.out.println("Age: " + age);
} catch (JSONException e) {
    e.printStackTrace();
}