Question

在我的项目中，我从HTTP响应中获取以下JSON。

{"base":"USD","date":"2015-04-24","rates":{"AUD":1.2827,"BGN":1.8069,"BRL":2.9733,"CAD":1.2119,"CHF":0.9551,"CNY":6.1948,"CZK":25.364,"DKK":6.8927,"GBP":0.6614,"HKD":7.75,"HRK":7.0284,"HUF":278.53,"IDR":12954.0,"ILS":3.9244,"INR":63.563,"JPY":119.51,"KRW":1078.25,"MXN":15.358,"MYR":3.5741,"NOK":7.8298,"NZD":1.3216,"PHP":44.281,"PLN":3.7076,"RON":4.08,"RUB":51.215,"SEK":8.6674,"SGD":1.3375,"THB":32.55,"TRY":2.7314,"ZAR":12.182,"EUR":0.9239}}

我想从上面的json获得“BGN”。怎么弄它。

Answer 1

此

涉及多个步骤

首先：创建一个jsonObject

JSONObject jObject = new JSONObject(yourJSON_String);

第二步：根据您的情况获取所需的对象或数组

obj =  getJSONObject("rates")

第三：获取必需的字符串

obj.getString("BGN");

以下是JSON CLASS REFERENCE

Answer 2

JSONObject responseJson = new JSONObject("<your-string">);
JSONObject ratesJson = responseJson.getJSONObject("rates");
double rate = ratesJson.getDouble("BGN");

要清楚地查看JSON对象，请使用PrettyJson。复制粘贴JSON字符串，它将显示嵌套对象（如果有），以便清楚地理解响应。

Answer 3

假设您正在使用JSONObject，并且您的根文档被调用＆＃34; doc＆＃34;，

JSONObject rates = doc.getJSONObject("rates")可以获得费率部分：

{"AUD":1.2827,"BGN":1.8069,"BRL":2.9733,"CAD":1.2119,"CHF":0.9551,"CNY":6.1948,"CZK":25.364,"DKK":6.8927,"GBP":0.6614,"HKD":7.75,"HRK":7.0284,"HUF":278.53,"IDR":12954.0,"ILS":3.9244,"INR":63.563,"JPY":119.51,"KRW":1078.25,"MXN":15.358,"MYR":3.5741,"NOK":7.8298,"NZD":1.3216,"PHP":44.281,"PLN":3.7076,"RON":4.08,"RUB":51.215,"SEK":8.6674,"SGD":1.3375,"THB":32.55,"TRY":2.7314,"ZAR":12.182,"EUR":0.9239}

然后，您可以使用

简单地从此对象获取BGN值

String bgn = rates.getString("BGN")

在Android中解析嵌套的JSONObject

3 个答案: