Json分层遍历解析聚合数据外汇牌价——对象套数组再套数组再套对象

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Json分层遍历解析聚合数据外汇牌价——对象套数组再套数组再套对象

          本文属于非常菜的菜鸟级别文章，对Json各个格式都很熟悉的大神可忽略此文~高手勿喷，欢迎指点~

Json的各种嵌套格式多种多样，如果是本公司自己后台所写的数据，格式比较怪异的那还比较好解决。但是如果是第三方接口数据就比较难办了，无论如何都得想方设法解析出来。今天我的项目就用到了第三方接口的数据，类似这种格式：

                                                                                             

{"error_code":0,"resultcode":"200","reason":"SUCCESSED!","result":[{"data1":{"bankConversionPri":"666.1500","date":"2016-08-08","fBuyPri":"664.6500","fSellPri":"667.3100","mBuyPri":"659.3200","mSellPri":"667.3100","name":"美元","time":"11:25:01"},"data2":{"bankConversionPri":"738.1600","date":"2016-08-08","fBuyPri":"736.6300","fSellPri":"741.8100","mBuyPri":"713.9000","mSellPri":"741.8100","name":"欧元","time":"11:25:01"},"data3":{"bankConversionPri":"85.9000","date":"2016-08-08","fBuyPri":"85.6900","fSellPri":"86.0100","mBuyPri":"85.0000","mSellPri":"86.0100","name":"港币","time":"11:25:01"},"data4":{"bankConversionPri":"6.5217","date":"2016-08-08","fBuyPri":"6.5043","fSellPri":"6.5499","mBuyPri":"6.3035","mSellPri":"6.5499","name":"日元","time":"11:25:01"},"data5":{"bankConversionPri":"871.1600","date":"2016-08-08","fBuyPri":"868.4300","fSellPri":"874.5300","mBuyPri":"841.6300","mSellPri":"874.5300","name":"英镑","time":"11:25:01"},"data6":{"bankConversionPri":"506.8700","date":"2016-08-08","fBuyPri":"504.9600","fSellPri":"508.5000","mBuyPri":"489.3700","mSellPri":"508.5000","name":"澳大利亚元","time":"11:25:01"},"data7":{"bankConversionPri":"505.2100","date":"2016-08-08","fBuyPri":"503.6400","fSellPri":"507.6800","mBuyPri":"488.0900","mSellPri":"507.6800","name":"加拿大元","time":"11:25:01"},"data8":{"bankConversionPri":"18.9900","date":"2016-08-08","fBuyPri":"18.9300","fSellPri":"19.0900","mBuyPri":"18.3500","mSellPri":"19.6700","name":"泰国铢","time":"11:25:01"},"data9":{"bankConversionPri":"494.0700","date":"2016-08-08","fBuyPri":"492.3400","fSellPri":"495.8000","mBuyPri":"477.1500","mSellPri":"495.8000","name":"新加坡元","time":"11:25:01"},"data10":{"bankConversionPri":"77.6100","date":"2016-08-08","fBuyPri":"77.5000","fSellPri":"78.1200","mBuyPri":"75.1100","mSellPri":"78.1200","name":"瑞典克朗","time":"11:25:01"},"data11":{"bankConversionPri":"679.3700","date":"2016-08-08","fBuyPri":"677.4500","fSellPri":"682.2100","mBuyPri":"656.5500","mSellPri":"682.2100","name":"瑞士法郎","time":"11:25:01"},"data12":{"bankConversionPri":"99.2000","date":"2016-08-08","fBuyPri":"99.0100","fSellPri":"99.8100","mBuyPri":"95.9600","mSellPri":"99.8100","name":"丹麦克朗","time":"11:25:01"},"data13":{"bankConversionPri":"78.1600","date":"2016-08-08","fBuyPri":"77.9900","fSellPri":"78.6100","mBuyPri":"75.5800","mSellPri":"78.6100","name":"挪威克朗","time":"11:25:01"},"data14":{"bankConversionPri":"48.5500","date":"2016-08-08","fBuyPri":"48.4000","fSellPri":"48.7400","mBuyPri":"44.6900","mSellPri":"52.4500","name":"南非兰特","time":"11:25:01"},"data15":{"bankConversionPri":"10.1700","date":"2016-08-08","fBuyPri":"10.0900","fSellPri":"10.1700","mBuyPri":"9.4700","mSellPri":"10.1700","name":"卢布","time":"11:25:01"},"data16":{"bankConversionPri":"83.2600","date":"2016-08-08","fBuyPri":"83.2500","fSellPri":"83.5700","mBuyPri":"80.4500","mSellPri":"86.2500","name":"澳门元","time":"11:25:01"},"data17":{"bankConversionPri":"14.1600","date":"2016-08-08","fBuyPri":"14.1300","fSellPri":"14.2500","mBuyPri":"13.7000","mSellPri":"14.6800","name":"菲律宾比索","time":"11:25:01"},"data18":{"bankConversionPri":"474.0900","date":"2016-08-08","fBuyPri":"471.9700","fSellPri":"475.2900","mBuyPri":"457.4100","mSellPri":"478.1300","name":"新西兰元","time":"11:25:01"},"data19":{"bankConversionPri":"165.4600","date":"2016-08-08","fBuyPri":"165.4900","fSellPri":"166.6500","mBuyPri":null,"mSellPri":null,"name":"林吉特","time":"11:25:01"},"data20":{"bankConversionPri":"0.5976","date":"2016-08-08","fBuyPri":"0.5959","fSellPri":"0.6007","mBuyPri":"0.5750","mSellPri":"0.6225","name":"韩国元","time":"11:25:01"},"data21":{"bankConversionPri":"21.0900","date":"2016-08-08","fBuyPri":null,"fSellPri":null,"mBuyPri":"20.3800","mSellPri":"21.8400","name":"新台币","time":"11:25:01"}}]}

平常所使用到的都是

"result":[{}，{}，……]的格式，可以直接用Gson工具生成类，直接用Http也好Gson解析出来，但是这个数据被我成为奇葩数据，以前没遇到过这么写的，请教了大神朋友们都说这是老后台所写吧！(只是猜猜，调侃调侃~)

         既然用不了工具来解析，那么就得用回老办法了，我试了两种方式，一种是异步任务解析Json，一种是http解析Json，废话不多说，直接上代码;

         首先不管是哪种方法都需要先自定义一个字段内容的类，我这个类根据上面需要解析的字段内容设置：

public class CurrencyRataData1
{String name ;//名字String buyInput ;//现汇买入String moneyInput ;//现钞买入String centerPri ;//中间价String buyOnput ;//现汇卖出String moneyOnput ;//现钞卖出String data ;//日期String time ;//时间public CurrencyRataData1(String name, String buyInput, String moneyInput, String centerPri, String buyOnput,String moneyOnput, String data, String time){super();this.name = name;this.buyInput = buyInput;this.moneyInput = moneyInput;this.centerPri = centerPri;this.buyOnput = buyOnput;this.moneyOnput = moneyOnput;this.data = data;this.time = time;}public String getName(){return name;}public void setName(String name){this.name = name;}public String getBuyInput(){return buyInput;}public void setBuyInput(String buyInput){this.buyInput = buyInput;}public String getMoneyInput(){return moneyInput;}public void setMoneyInput(String moneyInput){this.moneyInput = moneyInput;}public String getCenterPri(){return centerPri;}public void setCenterPri(String centerPri){this.centerPri = centerPri;}public String getBuyOnput(){return buyOnput;}public void setBuyOnput(String buyOnput){this.buyOnput = buyOnput;}public String getMoneyOutput(){return moneyOnput;}public void setMoneyOnput(String moneyOnput){this.moneyOnput = moneyOnput;}public String getData(){return data;}public void setData(String data){this.data = data;}public String getTime(){return time;}public void setTime(String time){this.time = time;}@Overridepublic String toString(){return "name=" + name + ", buyInput=" + buyInput + ", moneyInput=" + moneyInput+ ", centerPri=" + centerPri + ", buyOnput=" + buyOnput + ", moneyOnput=" + moneyOnput + ", data="+ data + ", time=" + time ;}}

1.异步任务解析Json

ArrayList<CurrencyRataData1> arrayList = new ArrayList<>();

class JsonAsync extends AsyncTask<String, Void, String>{@Overrideprotected String doInBackground(String... params){ByteArrayOutputStream baos = new ByteArrayOutputStream();String result = "";InputStream is = null;try{URL url = new URL(params[0]);is = url.openStream();int len = 0;byte[] buffer = new byte[1024];while (-1 != (len = is.read(buffer))){baos.write(buffer, 0, len);}result = new String(baos.toByteArray());baos.flush();} catch (MalformedURLException e){e.printStackTrace();} catch (IOException e){e.printStackTrace();} finally{if (is != null){try{is.close();} catch (IOException e){e.printStackTrace();}}}return result;}@Overrideprotected void onPostExecute(String result){super.onPostExecute(result);paraJson(result);}}

public void paraJson(String result){// 解析JSONObject数据 得到JSONObject对象try{JSONObject object = new JSONObject(result);JSONArray jsonArray1 = object.getJSONArray("result");JSONObject jsonObject = jsonArray1.getJSONObject(0);arrayList.clear();for (int i = 0; i < jsonObject.length(); i++){JSONObject jsonObject1 = jsonObject.getJSONObject("data"+(i+1));// 通过key获得值String name = jsonObject1.getString("name");//名字String buyInput = jsonObject1.getString("fBuyPri");//现汇买入String moneyInput = jsonObject1.getString("mBuyPri");//现钞买入String centerPri = jsonObject1.getString("bankConversionPri");//中间价String buyOnput = jsonObject1.getString("fSellPri");//现汇卖出String moneyOnput = jsonObject1.getString("mSellPri");//现钞卖出String data = jsonObject1.getString("date");//日期String time = jsonObject1.getString("time");//时间arrayList.add(new CurrencyRataData1(name, buyInput, moneyInput, centerPri, buyOnput, moneyOnput, data, time));Log.e("arrayList长度：", arrayList.size()+"");}rightAdater.notifyDataSetChanged();} catch (JSONException e){e.printStackTrace();} finally{}}

应用：new JsonAsync().execute(url);//异步任务下载，这里需要给个存放json数据的地址。

2.http解析Json
自定义一个http解析工具类HTTPUtils，传入参数即可

HTTPUtils.get(this, url, new ResponseListener(){@Overridepublic void onResponse(String json){JSONObject jsonObject;try {jsonObject = new JSONObject(json);JSONArray resultlist = jsonObject.getJSONArray("result");JSONObject result = resultlist.getJSONObject(0);arrayList.clear();for (int i = 0; i < result.length(); i++) {JSONObject data = result.getJSONObject("data"+(i+1));CurrencyRataData1 currencyRataData1 = new CurrencyRataData1(data.getString("name"),data.getString("fBuyPri"), data.getString("mBuyPri"), data.getString("bankConversionPri"), data.getString("fSellPri"), data.getString("mSellPri"),data.getString("date"),data.getString("time"));arrayList.add(currencyRataData1);Log.e("arrayList长度：", arrayList.size()+"");}rightAdater.notifyDataSetChanged();} catch (JSONException e) {e.printStackTrace();}Log.e("mResult", "成功");}@Overridepublic void onErrorResponse(VolleyError arg0){Log.e("VolleyError", "失败");}});