Json deserialisation of server results?

Question

Hi there,

I have been trying for a couple hours to deserialize info from my server for our high score system. Everytime i try to i will get n error "ArgumentException: JSON must represent an object type."

This is my Json info which is generated by my server when i echo it out. What am i doing wrong?

  [
     {
         "ScoreID": "8",
         "GoogleID": "asasda",
         "Score": "258"
     },
     {
         "ScoreID": "11",
         "GoogleID": "kjjahushcjkasjkcajskndas",
         "Score": "258"
     },
     {
         "ScoreID": "10",
         "GoogleID": "aakhskjbjkabsjjkasd",
         "Score": "258"
     },
     {
         "ScoreID": "9",
         "GoogleID": "mnbabksgkajsd",
         "Score": "258"
     },
     {
         "ScoreID": "13",
         "GoogleID": "kajiuskabkjshdkhausd",
         "Score": "258"
     },
     {
         "ScoreID": "7",
         "GoogleID": "asasdas,mgkhgjhbhjaf",
         "Score": "258"
     },
     {
         "ScoreID": "6",
         "GoogleID": "ss",
         "Score": "258"
     },
     {
         "ScoreID": "5",
         "GoogleID": "kljkuasjkba",
         "Score": "258"
     },
     {
         "ScoreID": "4",
         "GoogleID": "asdadasdasdasdw",
         "Score": "258"
     },
     {
         "ScoreID": "3",
         "GoogleID": "asdadsasd",
         "Score": "258"
     },
     {
         "ScoreID": "2",
         "GoogleID": "kbaskjkjsbnkjas",
         "Score": "258"
     },
     {
         "ScoreID": "12",
         "GoogleID": "lahaushyuiahkjsjksd",
         "Score": "258"
     },
     {
         "ScoreID": "1",
         "GoogleID": "254asdasd54a5s1das2d1as54d",
         "Score": "259"
     },
     {
         "ScoreID": "14",
         "GoogleID": "kjaskjhjkahsjkdnjkasd",
         "Score": "6859"
     }
 ]

and this is the classes im trying to serialise into

 [System.Serializable]
 public class LeaderBoardEntries
 {
     public int ScoreID;
     public string GoogleID;
     public int Score;
 }
 [System.Serializable]
 public class Scores
 {
     public List<LeaderBoardEntries> scores;
 }

Answer 1

Answer by elenzil · Apr 05, 2017 at 05:08 PM

"ArgumentException: JSON must represent an object type."

an object type in json is a {}. your json is a [], which is an array.

if you're able to change the server code, modify it to emit something like

 {
   "scores": [
     {
       "ScoreID": "1",
       "GoogleID": "254asdasd54a5s1das2d1as54d",
       "Score": "259"
     },
     {
       "ScoreID": "12",
       "GoogleID": "lahaushyuiahkjsjksd",
       "Score": "258"
     }
   ]
 }

if you're not able to modify the server code, have your client modify the json string before parsing. eg

 string newJSONString = "{ \"scores\": " + oldJSONString + " }";

.. i would strongly advise trying to to it on the server, tho.

also, unrelatedly, if it were me i would rename your "LeaderBoardEntries" class to "LeaderBoardEntry".

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elenzil · Apr 05, 2017 at 11:50 PM 0

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actually, the docs are pretty vague. arrays are not mentioned.

Json deserialisation of server results?

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