Java 教授'；s的研究生给出了JSON数据，该数据的结构不正确，无法作为用户的JSON数组
下面是我试图解析的JSONObject的外观：Java 教授'；s的研究生给出了JSON数据，该数据的结构不正确，无法作为用户的JSON数组,java,android,json,getjson,Java,Android,Json,Getjson,下面是我试图解析的JSONObject的外观： Exception in thread "main" java.util.NoSuchElementException at java.util.HashMap$HashIterator.nextNode(HashMap.java:1431) at java.util.HashMap$KeyIterator.next(HashMap.java:1453) at DataParse.parseFeed(DataParse.java:61) at in
Exception in thread "main" java.util.NoSuchElementException
at java.util.HashMap$HashIterator.nextNode(HashMap.java:1431)
at java.util.HashMap$KeyIterator.next(HashMap.java:1453)
at DataParse.parseFeed(DataParse.java:61)
at intellidealsbackend.main(intellibackend.java:25)
{
users: {
276c7438-2b6a-4d92-a5f8-4a9e9007efa8: {
email: "power.nit@gmail.com",
username: "power nit"
},
de977b2f-2243-425c-9dfe-9f1443e41303: {
email: "denvervronkos@gmail.com",
username: "Denver vronkos"
},
e73cd6c9-9577-4cdc-b8fe-4227ac227c6b: {
email: "ls@gmail.com",
username: "laveena sharma"
}
},
visited: {
2fe51b4a-60b9-42cf-a889-bb607a5ea9bd: {
-KGWYAYM_iW6vi_SGBq3: {
condition: "clear sky",
date: "29 Apr 2016",
degree: "59.90360000000002",
latitude: "33.7932608",
longitude: "-118.1359034",
placeType: "Shopping Mall",
placeVisited: "Los Altos Mall",
time: "03:24",
uid: "3b0b90ce-8d13-4c7b-ab5b-b453aa9fabc5",
username: "kunal bolia"
},
-KGWYK9wH7UPcXMNCisY: {
condition: "clear sky",
date: "29 Apr 2016",
degree: "59.90360000000002",
latitude: "33.79330768",
longitude: "-118.13585834",
placeType: "Shopping Mall",
placeVisited: "Los Altos Mall",
time: "03:25",
uid: "3b0b90ce-8d13-4c7b-ab5b-b453aa9fabc5",
username: "kunal bolia"
}
},
68ebe7a6-7344-4d50-b647-16bb830ad413: {
-KGWB4NOqJGg6DNSPN1n: {
condition: "clear sky",
date: "29 Apr 2016",
degree: "59.90360000000002",
latitude: "33.7932834",
longitude: "-118.135812",
placeType: "Shopping Mall",
placeVisited: "Los Altos Mall",
time: "01:43",
uid: "68ebe7a6-7344-4d50-b647-16bb830ad413",
username: "bat man"
},
-KGWBIvlt9pUQOrJgK0p: {
condition: "clear sky",
date: "29 Apr 2016",
degree: "59.90360000000002",
latitude: "33.79357387",
longitude: "-118.13580848",
placeType: "Shopping Mall",
placeVisited: "Los Altos Mall",
time: "01:44",
uid: "68ebe7a6-7344-4d50-b647-16bb830ad413",
username: "bat man"
},
-KGWQi36kjznhtMerapt: {
condition: "clear sky",
date: "29 Apr 2016",
degree: "59.90360000000002",
latitude: "33.7932608",
longitude: "-118.1359034",
placeType: "Shopping Mall",
placeVisited: "Los Altos Mall",
time: "02:52",
uid: "68ebe7a6-7344-4d50-b647-16bb830ad413",
username: "bat man"
}
}
import java.util.ArrayList；
导入java.util.Iterator；
导入java.util.List；
导入java.util.Map；
导入java.util.Set；
导入org.json.JSONArray；
导入org.json.JSONException；
导入org.json.JSONObject；
公共类数据解析{
私有静态列表UID；
公共静态列表源（字符串内容）{
试一试{
List dataList=new ArrayList（）；
uids=新的ArrayList（）；
//获取根节点
JSONObject数据=新的JSONObject（内容）；
if（data.has（“用户”）&&data.has（“已访问”）&&&！data.isNull（“用户”）&&&！data.isNull（“已访问”））{
//我们得到父节点
JSONObject userObj=data.getJSONObject（“用户”）；
JSONObject visitedObj=data.getJSONObject（“已访问”）；
//从JSON对象获取其键的映射
JSONToMap jtm=新的JSONToMap（）；
Map userId=jtm.jsonToMap（userObj）；
//这些是来自所有用户的密钥
Set userKeys=userId.keySet（）；
uids.addAll（用户密钥）；
for（迭代器i=userKeys.Iterator（）；i.hasNext（）；）{
//布尔测试=visitedObj.isNull（i.next（）.toString（））；
如果（visitedObj.isNull（i.next（）.toString（））| |！visitedObj.has（i.next（）.toString（）））{
继续；
}
否则{
JSONObject visitedDatauid=visitedObj.getJSONObject（i.next（）.toString（））；
//从JSON对象获取其键的映射
JSONToMap jtmPushKeys=新的JSONToMap（）；
Map pushKeys=jtmPushKeys.jsonToMap（visitedDatauid）；
Set pKeys=pushKeys.keySet（）；
//在推入式android中迭代uid->唯一键
for（迭代器j=pKeys.Iterator（）；j.hasNext（）；）
{
//访问特定uid“i”的按键“j”数据
如果（！（visitedDatauid.isNull（j.next（）.toString（））&（visitedDatauid.has（j.next（）.toString（）））{
JSONObject visitdata=visitedDatauid.getJSONObject（j.next（）.toString（））；
//字符串uidIter=i.next（）.toString（）；
//JSONObject user=userObj.getJSONObject（i.next（）.toString（））；
//从JSONObject获取数据并以字符串形式存储
字符串uid=“”，username=“”，email=“”，placevisted=“”，lat=“”，lon=“”，condition=“”；
//字符串uid=“”，username=“”，email=“”，placevisted=“”，lat=“”，lon=“”，condition=“”；
uid=visitdata.getString（“uid”）；
username=visitdata.getString（“用户名”）；
//email=user.getString（“电子邮件”）；
placevisited=visitdata.getString（“placevisited”）；
lat=visitdata.getString（“纬度”）；
lon=visitdata.getString（“经度”）；
condition=visitdata.getString（“condition”）；
//DataModal dm=新的DataModal（电子邮件、uid、用户名、lat、lon、访问地点、条件）；
DataModal dm=新的DataModal（uid、用户名、lat、lon、访问地点、条件）；
dataList.add（dm）；
}
否则{
System.err.println（“已访问键：+j.next（）.toString（）+”在已访问中不存在”）；
字符串uid=“”，username=“”，email=“”，placevisted=“”，lat=“”，lon=“”，condition=“”；
//字符串uid=“”，username=“”，email=“”，placevisted=“”，lat=“”，lon=“”，condition=“”；
uid=i.next（）.toString（）；
username=“NA”；
电子邮件=“NA”；
“NA”；
lat=“NA”；
lon=“NA”；
条件=“NA”；
DataModal dm=新的DataModal（uid、用户名、lat、lon、访问地点、条件）；
dataList.add（dm）；
继续；
}
}
}
}
}
返回数据列表；
}捕获（JSONException e）{
e、 printStackTrace（）；
返回null；
}
}
谢谢，我真的很感谢你的帮助。每次你想得到下一个你呼叫的对象时
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
public class DataParse {
private static List<String> uids;
public static List<DataModal> parseFeed(String content) {
try {
List<DataModal> dataList = new ArrayList<>();
uids = new ArrayList<>();
//get root node
JSONObject data = new JSONObject(content);
if(data.has("users")&& data.has("visited")&& !data.isNull("users")&& !data.isNull("visited")){
// We get parent nodes
JSONObject userObj = data.getJSONObject("users");
JSONObject visitedObj = data.getJSONObject("visited");
//get map from JSON object for its keys
JSONToMap jtm = new JSONToMap();
Map<String,Object> userId = jtm.jsonToMap(userObj);
//these are the keys from all the users
Set<String> userKeys = userId.keySet();
uids.addAll(userKeys);
for(Iterator i = userKeys.iterator();i.hasNext();){
//boolean test = visitedObj.isNull(i.next().toString());
if(visitedObj.isNull(i.next().toString())||!visitedObj.has(i.next().toString())){
continue;
}
else{
JSONObject visitedDatauid = visitedObj.getJSONObject(i.next().toString());
//get map from JSON object for its keys
JSONToMap jtmPushKeys = new JSONToMap();
Map<String,Object> pushKeys = jtmPushKeys.jsonToMap(visitedDatauid);
Set<String> pKeys = pushKeys.keySet();
//iterate through uid -> unique keys from push in android
for(Iterator j = pKeys.iterator();j.hasNext();)
{
//access push key 'j' data for particular uid 'i'
if(!(visitedDatauid.isNull(j.next().toString()))&& (visitedDatauid.has(j.next().toString()))){
JSONObject visitdata = visitedDatauid.getJSONObject(j.next().toString());
//String uidIter = i.next().toString();
//JSONObject user = userObj.getJSONObject(i.next().toString());
//Get data from JSONObjects and store in Strings
String uid="",username="",email="",placevisited="",lat="",lon="", condition ="";
//String uid="",username="",email="",placevisited="",lat="",lon="", condition ="";
uid = visitdata.getString("uid");
username = visitdata.getString("username");
//email = user.getString("email");
placevisited = visitdata.getString("placeVisited");
lat = visitdata.getString("latitude");
lon = visitdata.getString("longitude");
condition = visitdata.getString("condition");
//DataModal dm = new DataModal(email,uid,username,lat,lon,placevisited,condition);
DataModal dm = new DataModal(uid,username,lat,lon,placevisited,condition);
dataList.add(dm);
}
else{
System.err.println("Visited key:"+j.next().toString()+" do not exist in Visited");
String uid="",username="",email="",placevisited="",lat="",lon="", condition ="";
//String uid="",username="",email="",placevisited="",lat="",lon="", condition ="";
uid = i.next().toString();
username = "NA";
email = "NA";
placevisited = "NA";
lat = "NA";
lon = "NA";
condition = "NA";
DataModal dm = new DataModal(uid,username,lat,lon,placevisited,condition);
dataList.add(dm);
continue;
}
}
}
}
}
return dataList;
} catch (JSONException e) {
e.printStackTrace();
return null;
}
}
i.next();
{
"users": [{
"276c7438-2b6a-4d92-a5f8-4a9e9007efa8": {
"email": "power.nit@gmail.com",
"username": "power nit"
},
"de977b2f-2243-425c-9dfe-9f1443e41303": {
"email": "denvervronkos@gmail.com",
"username": "Denver vronkos"
},
"e73cd6c9-9577-4cdc-b8fe-4227ac227c6b": {
"email": "ls@gmail.com",
"username": "laveena sharma"
}
}]
}