JSON 请求 android 错误
JSON request android error
当从我的循环中接收到我的 json 时，它作为一个大对象出现
我该如何防止这种情况发生，有人可以指出正确的方向或文件吗？
日志....
W/System.err: org.json.JSONException: Value {"1":{"id":1,"name":"Bitcoin","symbol":"BTC","website_slug":"bitcoin","rank":1,"circulating_supply":17153487,"total_supply":17153487,"max_supply":21000000,"quotes":{"USD":{"price":6720.93,"volume_24h":4367200000,"market_cap":115287385383,"percent_change_1h":-0.09,"percent_change_24h":2.07,"percent_change_7d":3.26}},"last_updated":1531828586},"1027":{"id":1027,"name":"Ethereum","symbol":"ETH","website_slug":"ethereum","rank":2,"circulating_supply":100744923,"total_supply":100744923,"max_supply":null,"quotes":{"USD":{"price":472.777,"volume_24h":1774520000,"market_cap":47629882298,"percent_change_1h":-0.45,"percent_change_24h":0.3,"percent_change_7d":5.32}},"last_updated":1531828591},"52":{"id":52,"name":"XRP","symbol":"XRP","website_slug":"ripple","rank":3,"circulating_supply":39262444717,"total_supply":99991916481,"max_supply":100000000000,"quotes":{"USD":{"price":0.473278,"volume_24h":269811000,"market_cap":18582051311,"percent_change_1h":-0.18,"percent_change_24h":2.43,"percent_change_7d":4.17}},"last_updated":1531828571},"1831":{"id":1831,"name":"Bitcoin Cash","symbol":"BCH","website_slug":"bitcoin-cash","rank":4,"circulating_supply":17242013,"total_supply":17242013,"max_supply":21000000,"quotes":{"USD":{"price":793.963,"volume_24h":471637000,"market_cap":13689519971,"percent_change_1h":-0.47,"percent_change_24h":3.58,"percent_change_7d":12.07}},"last_updated":1531828592},"1765":{"id":1765,"name":"EOS","symbol":"EOS","website_slug":"eos","rank":5,"circulating_supply":896149492,"total_supply":900000000,"max_supply":1000000000,"quotes":{"USD":{"price":7.94815,"volume_24h":666448000,"market_cap":7122730586,"percent_change_1h":-0.29,"percent_change_24h":2.5,"percent_change_7d":6.31}},"last_updated":1531828590},"2":{"id":2,"name":"Litecoin","symbol":"LTC","website_slug":"litecoin","rank":6,"circulating_supply":57444758,"total_supply":57444758,"max_supply":84000000,"quotes":{"USD":{"price":83.7447,"volume_24h":283495000,"market_cap":4810693998,"percent_change_1h":-0.17,"percent_change_24h":1.63,"percent_change_7d":8.91}},"last_updated":1531828567},"512":{"id":512,"name":"Stellar","symbol":"XLM","website_slug":"stellar","rank":7,"circulating_supply":18766530971,"total_supply":104125061584,"max_supply":null,"quotes":{"USD":{"price":0.231804,"volume_24h":49352700,"market_cap":4350156945,"percent_change_1h":-0.94,"percent_change_24h":0.8,"percent_change_7d":17.92}},"last_updated":1531828584},"2010":{"id":2010,"name":"Cardano","symbol":"ADA","website_slug":"cardano","rank":8,"circulating_supply":25927070538,"total_supply":31112483745,"max_supply":45000000000,"quotes":{"USD":{"price":0.152682,"volume_24h":86195700,"market_cap":3958596984,"percent_change_1h":0.16,"percent_change_24h":1.2,"percent_change_7d":15.48}},"last_updated":1531828594},"1720":{"id":1720,"name":"IOTA","symbol":"MIOTA","website_slug":"iota","rank":9,"circulating_supply":2779530283,"total_supply":2779530283,"max_supply":2779530283,"quotes":{"USD":{"price":1.06608,"volume_24h":45845200,"market_cap":2963201644,"percent_change_1h":-0.49,"percent_change_24h":0.44,"percent_change_7d":8.21}},"last_updated":1531828590},"825":{"id":825,"name":"Tether","symbol":"USDT","website_slug":"tether","rank":10,"circulating_supply":2707140346,"total_supply":3080109502,"max_supply":null,"quotes":{"USD":{"price":1.00215,"volume_24h":2728850000,"market_cap":2712960697,"percent_change_1h":0.11,"percent_change_24h":0.45,"percent_change_7d":-0.16}},"last_updated":1531828588},"1958":{"id":1958,"name":"TRON","symbol":"TRX","website_slug":"tron","rank":11,"circulating_supply":65748111645,"total_supply":99000000000,"max_supply":null,"quotes":{"USD":{"price":0.0367706,"volume_24h":191259000,"market_cap":2417597514,"percent_change_1h":0.03,"percent_change_24h":1.55,"percent_change_7d":8.49}},"last_updated":1531828593},"1376":{"id":1376,"name":"NEO","symbol":"NEO","website_slug":"neo","rank":12,"circulating_supply":65000000,"total_supply":100000000,"max_supply":100000000,"quotes":{"USD":{"price":36.2949,"volume_24h":128189
这是我的请求代码
public ArrayList getCoin(){
firstlist.clear();
final JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.GET,
Constants.URL_JSON, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
try {
JSONArray coinArray = response.getJSONArray("data");
for (int i = 0; i < coinArray.length(); i++) {
JSONObject coinOBJ = coinArray.getJSONObject(i);
CoinMarketAPI coin = new CoinMarketAPI();
// coin.setId(coinOBJ.getString("id"));
//coin.setName(coinOBJ.getString("name"));
//coin.setSymbol(coinOBJ.getString("symbol"));
//coin.setWebsite_slug(coinOBJ.getString("website_slug"));
// coin.setRank(coinOBJ.getString("rank"));
// coin.setCirculating_supply(coinOBJ.getString("circulating_supply"));
// coin.setTotal_supply(coinOBJ.getString("total_supply"));
// coin.setQuotes(coinOBJ.getString("quotes"));
// coin.setUSD(coinOBJ.getString("USD"));
// coin.setPrice(coinOBJ.getString("price"));
Log.d(TAG, coin.getName());
firstlist.add(coin);
}
JSON
{
"data": {
"1": {
"id": 1,
"name": "Bitcoin",
"symbol": "BTC",
"website_slug": "bitcoin",
"rank": 1,
"circulating_supply": 17008162.0,
"total_supply": 17008162.0,
"max_supply": 21000000.0,
"quotes": {
"USD": {
"price": 9024.09,
"volume_24h": 8765400000.0,
"market_cap": 153483184623.0,
"percent_change_1h": -2.31,
"percent_change_24h": -4.18,
"percent_change_7d": -0.47
}
},
"last_updated": 1525137271
},
"1027": {
"id": 1027,
"name": "Ethereum",
"symbol": "ETH",
"website_slug": "ethereum",
"rank": 2,
"circulating_supply": 99151888.0,
"total_supply": 99151888.0,
"max_supply": null,
"quotes": {
"USD": {
"price": 642.399,
"volume_24h": 2871290000.0,
"market_cap": 63695073558.0,
"percent_change_1h": -3.75,
"percent_change_24h": -7.01,
"percent_change_7d": -2.32
}
},
注意 一些行被注释掉以防止进一步的错误。
我认为错误是执行 json 数组响应行但不确定如何修复它。任何帮助将不胜感激。
data 是对象，不是数组，所以你可以像这样通过迭代器循环
JSONObject coinArray = response.getJSONObject("data");
Iterator<String> iter = coinArray.keys();
while (iter.hasNext()) {
String key = iter.next();
try {
Object coinOBJ = coinArray.get(key);
CoinMarketAPI coin = new CoinMarketAPI();
coin.setId(coinOBJ.getString("id"));
coin.setName(coinOBJ.getString("name"));
coin.setSymbol(coinOBJ.getString("symbol"));
coin.setWebsite_slug(coinOBJ.getString("website_slug"));
coin.setRank(Integer.parseInt(coinOBJ.getString("rank")));
coin.setCirculating_supply(coinOBJ.getString("circulating_supply"));
coin.setTotal_supply(coinOBJ.getString("total_supply"));
coin.setQuotes(coinOBJ.getString("quotes"));
coin.setUSD(coinOBJ.getString("USD"));
coin.setPrice(coinOBJ.getString("price"));
Log.d(TAG, coin.getName());
firstlist.add(coin);
} catch (JSONException e) {
// Something went wrong!
}
}
我来给你解释一下。我所做的是 "data" 是一个 Json 对象并且在其内部有多个对象。所以我通过 jsonObject.names(); 将数据转换为 Json 数组；现在我将通过 for 循环获取数据中的每个对象。
JSONObject jsonObject = response.getJSONObject("data");
JSONArray jsonArray = jsonObject.names();
Log.e(tag,jsonArray.toString());
for(int i=0;i<jsonArray.length();i++){
JSONObject getObjectFromJsonArray=jsonObject.getJSONObject(jsonArray.getString(i));
CoinMarketAPI coin=new CoinMarketAPI();
coin.setId(getObjectFromJsonArray.getString("id"));
coin.setName(getObjectFromJsonArray.getString("name"));
coin.setSymbol(getObjectFromJsonArray.getString("symbol"));
coin.setWebsite_slug(getObjectFromJsonArray.getString("website_slug"));
coin.setRank(getObjectFromJsonArray.getString("rank"));
coin.setCirculating_supply(getObjectFromJsonArray.getString("circulating_supply"));
coin.setTotal_supply(getObjectFromJsonArray.getString("total_supply"));
JSONObject qoutes = getObjectFromJsonArray.getJSONObject("quotes");
JSONObject USD = qoutes.getJSONObject("USD");
coin.setPrice(USD.getString("price"));
firstlist.add(coin);
}
当从我的循环中接收到我的 json 时，它作为一个大对象出现 我该如何防止这种情况发生，有人可以指出正确的方向或文件吗？
日志....
W/System.err: org.json.JSONException: Value {"1":{"id":1,"name":"Bitcoin","symbol":"BTC","website_slug":"bitcoin","rank":1,"circulating_supply":17153487,"total_supply":17153487,"max_supply":21000000,"quotes":{"USD":{"price":6720.93,"volume_24h":4367200000,"market_cap":115287385383,"percent_change_1h":-0.09,"percent_change_24h":2.07,"percent_change_7d":3.26}},"last_updated":1531828586},"1027":{"id":1027,"name":"Ethereum","symbol":"ETH","website_slug":"ethereum","rank":2,"circulating_supply":100744923,"total_supply":100744923,"max_supply":null,"quotes":{"USD":{"price":472.777,"volume_24h":1774520000,"market_cap":47629882298,"percent_change_1h":-0.45,"percent_change_24h":0.3,"percent_change_7d":5.32}},"last_updated":1531828591},"52":{"id":52,"name":"XRP","symbol":"XRP","website_slug":"ripple","rank":3,"circulating_supply":39262444717,"total_supply":99991916481,"max_supply":100000000000,"quotes":{"USD":{"price":0.473278,"volume_24h":269811000,"market_cap":18582051311,"percent_change_1h":-0.18,"percent_change_24h":2.43,"percent_change_7d":4.17}},"last_updated":1531828571},"1831":{"id":1831,"name":"Bitcoin Cash","symbol":"BCH","website_slug":"bitcoin-cash","rank":4,"circulating_supply":17242013,"total_supply":17242013,"max_supply":21000000,"quotes":{"USD":{"price":793.963,"volume_24h":471637000,"market_cap":13689519971,"percent_change_1h":-0.47,"percent_change_24h":3.58,"percent_change_7d":12.07}},"last_updated":1531828592},"1765":{"id":1765,"name":"EOS","symbol":"EOS","website_slug":"eos","rank":5,"circulating_supply":896149492,"total_supply":900000000,"max_supply":1000000000,"quotes":{"USD":{"price":7.94815,"volume_24h":666448000,"market_cap":7122730586,"percent_change_1h":-0.29,"percent_change_24h":2.5,"percent_change_7d":6.31}},"last_updated":1531828590},"2":{"id":2,"name":"Litecoin","symbol":"LTC","website_slug":"litecoin","rank":6,"circulating_supply":57444758,"total_supply":57444758,"max_supply":84000000,"quotes":{"USD":{"price":83.7447,"volume_24h":283495000,"market_cap":4810693998,"percent_change_1h":-0.17,"percent_change_24h":1.63,"percent_change_7d":8.91}},"last_updated":1531828567},"512":{"id":512,"name":"Stellar","symbol":"XLM","website_slug":"stellar","rank":7,"circulating_supply":18766530971,"total_supply":104125061584,"max_supply":null,"quotes":{"USD":{"price":0.231804,"volume_24h":49352700,"market_cap":4350156945,"percent_change_1h":-0.94,"percent_change_24h":0.8,"percent_change_7d":17.92}},"last_updated":1531828584},"2010":{"id":2010,"name":"Cardano","symbol":"ADA","website_slug":"cardano","rank":8,"circulating_supply":25927070538,"total_supply":31112483745,"max_supply":45000000000,"quotes":{"USD":{"price":0.152682,"volume_24h":86195700,"market_cap":3958596984,"percent_change_1h":0.16,"percent_change_24h":1.2,"percent_change_7d":15.48}},"last_updated":1531828594},"1720":{"id":1720,"name":"IOTA","symbol":"MIOTA","website_slug":"iota","rank":9,"circulating_supply":2779530283,"total_supply":2779530283,"max_supply":2779530283,"quotes":{"USD":{"price":1.06608,"volume_24h":45845200,"market_cap":2963201644,"percent_change_1h":-0.49,"percent_change_24h":0.44,"percent_change_7d":8.21}},"last_updated":1531828590},"825":{"id":825,"name":"Tether","symbol":"USDT","website_slug":"tether","rank":10,"circulating_supply":2707140346,"total_supply":3080109502,"max_supply":null,"quotes":{"USD":{"price":1.00215,"volume_24h":2728850000,"market_cap":2712960697,"percent_change_1h":0.11,"percent_change_24h":0.45,"percent_change_7d":-0.16}},"last_updated":1531828588},"1958":{"id":1958,"name":"TRON","symbol":"TRX","website_slug":"tron","rank":11,"circulating_supply":65748111645,"total_supply":99000000000,"max_supply":null,"quotes":{"USD":{"price":0.0367706,"volume_24h":191259000,"market_cap":2417597514,"percent_change_1h":0.03,"percent_change_24h":1.55,"percent_change_7d":8.49}},"last_updated":1531828593},"1376":{"id":1376,"name":"NEO","symbol":"NEO","website_slug":"neo","rank":12,"circulating_supply":65000000,"total_supply":100000000,"max_supply":100000000,"quotes":{"USD":{"price":36.2949,"volume_24h":128189
这是我的请求代码
public ArrayList getCoin(){ firstlist.clear();
final JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.GET,
Constants.URL_JSON, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
try {
JSONArray coinArray = response.getJSONArray("data");
for (int i = 0; i < coinArray.length(); i++) {
JSONObject coinOBJ = coinArray.getJSONObject(i);
CoinMarketAPI coin = new CoinMarketAPI();
// coin.setId(coinOBJ.getString("id"));
//coin.setName(coinOBJ.getString("name"));
//coin.setSymbol(coinOBJ.getString("symbol"));
//coin.setWebsite_slug(coinOBJ.getString("website_slug"));
// coin.setRank(coinOBJ.getString("rank"));
// coin.setCirculating_supply(coinOBJ.getString("circulating_supply"));
// coin.setTotal_supply(coinOBJ.getString("total_supply"));
// coin.setQuotes(coinOBJ.getString("quotes"));
// coin.setUSD(coinOBJ.getString("USD"));
// coin.setPrice(coinOBJ.getString("price"));
Log.d(TAG, coin.getName());
firstlist.add(coin);
}
JSON
{
"data": {
"1": {
"id": 1,
"name": "Bitcoin",
"symbol": "BTC",
"website_slug": "bitcoin",
"rank": 1,
"circulating_supply": 17008162.0,
"total_supply": 17008162.0,
"max_supply": 21000000.0,
"quotes": {
"USD": {
"price": 9024.09,
"volume_24h": 8765400000.0,
"market_cap": 153483184623.0,
"percent_change_1h": -2.31,
"percent_change_24h": -4.18,
"percent_change_7d": -0.47
}
},
"last_updated": 1525137271
},
"1027": {
"id": 1027,
"name": "Ethereum",
"symbol": "ETH",
"website_slug": "ethereum",
"rank": 2,
"circulating_supply": 99151888.0,
"total_supply": 99151888.0,
"max_supply": null,
"quotes": {
"USD": {
"price": 642.399,
"volume_24h": 2871290000.0,
"market_cap": 63695073558.0,
"percent_change_1h": -3.75,
"percent_change_24h": -7.01,
"percent_change_7d": -2.32
}
},
注意 一些行被注释掉以防止进一步的错误。
我认为错误是执行 json 数组响应行但不确定如何修复它。任何帮助将不胜感激。
data 是对象，不是数组，所以你可以像这样通过迭代器循环
JSONObject coinArray = response.getJSONObject("data");
Iterator<String> iter = coinArray.keys();
while (iter.hasNext()) {
String key = iter.next();
try {
Object coinOBJ = coinArray.get(key);
CoinMarketAPI coin = new CoinMarketAPI();
coin.setId(coinOBJ.getString("id"));
coin.setName(coinOBJ.getString("name"));
coin.setSymbol(coinOBJ.getString("symbol"));
coin.setWebsite_slug(coinOBJ.getString("website_slug"));
coin.setRank(Integer.parseInt(coinOBJ.getString("rank")));
coin.setCirculating_supply(coinOBJ.getString("circulating_supply"));
coin.setTotal_supply(coinOBJ.getString("total_supply"));
coin.setQuotes(coinOBJ.getString("quotes"));
coin.setUSD(coinOBJ.getString("USD"));
coin.setPrice(coinOBJ.getString("price"));
Log.d(TAG, coin.getName());
firstlist.add(coin);
} catch (JSONException e) {
// Something went wrong!
}
}
我来给你解释一下。我所做的是 "data" 是一个 Json 对象并且在其内部有多个对象。所以我通过 jsonObject.names(); 将数据转换为 Json 数组；现在我将通过 for 循环获取数据中的每个对象。
JSONObject jsonObject = response.getJSONObject("data");
JSONArray jsonArray = jsonObject.names();
Log.e(tag,jsonArray.toString());
for(int i=0;i<jsonArray.length();i++){
JSONObject getObjectFromJsonArray=jsonObject.getJSONObject(jsonArray.getString(i));
CoinMarketAPI coin=new CoinMarketAPI();
coin.setId(getObjectFromJsonArray.getString("id"));
coin.setName(getObjectFromJsonArray.getString("name"));
coin.setSymbol(getObjectFromJsonArray.getString("symbol"));
coin.setWebsite_slug(getObjectFromJsonArray.getString("website_slug"));
coin.setRank(getObjectFromJsonArray.getString("rank"));
coin.setCirculating_supply(getObjectFromJsonArray.getString("circulating_supply"));
coin.setTotal_supply(getObjectFromJsonArray.getString("total_supply"));
JSONObject qoutes = getObjectFromJsonArray.getJSONObject("quotes");
JSONObject USD = qoutes.getJSONObject("USD");
coin.setPrice(USD.getString("price"));
firstlist.add(coin);
}