在Android中解析嵌套的JSONObject [重复]答案

【问题标题】：Parsing nested JSONObject in Android [duplicate]在Android中解析嵌套的JSONObject [重复]
【发布时间】：2015-07-05 12:24:38
【问题描述】：

在我的项目中，我从 HTTP 响应中获取了以下 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 中获取“BGN”。如何获得。

【问题讨论】：

试试这个：stackoverflow.com/questions/9605913/…

标签： android json

【解决方案1】：

这涉及多个步骤

首先：创建一个jsonObject

JSONObject jObject = new JSONObject(yourJSON_String);

第二：获取你想要的对象或数组，在你的情况下

obj =  getJSONObject("rates")

第三：获取所需的字符串

obj.getString("BGN");

这里是JSON CLASS REFERENCE

【讨论】：

【解决方案2】：

假设您使用的是 JSONObject，并且您的根文档称为“doc”，

JSONObject rates = doc.getJSONObject("rates") 将为您提供费率部分：

{"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}

从此对象中，您可以使用

简单地获取 BGN 值

String bgn = rates.getString("BGN")

【讨论】：

【解决方案3】：

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

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

【讨论】：