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UnityWebRequest result can't be deserialized to JSON

Neven Drašković · 2018-01-22T08:23:14

Hey guys, I have a really weird problem. I'm trying to get some data from a REST service. I'm using the following code: private void GetTheScores() { UnityWebRequest GetCommand = UnityWebRequest.Get(url); UnityWebRequestAsyncOperation operation = GetCommand.SendWebRequest(); if (!operation.webRequest.isNetworkError) { ResultsContainer rez = JsonUtility.FromJson<ResultsContainer>(operation.webRequest.downloadHandler.text); Debug.Log("Text: " + operation.webRequest.downloadHandler.text); } } The problem is that when I'm in Unity's editor, the request doesn't return anything (operation.webRequest.downloadHandler.text is empty, the Debug.Log command just prints "Text: "), but when I enter the debug mode and insert a breakpoint on that line, then it returns the text properly. Does anyone have an idea why is this happening? The real problem I'm trying to solve is that when I receive the text, I can't get the data from the JSON. The markup is really simple: [{"id":1,"name":"Player1"},{"id":2,"name":"Player2"}] and I have an object that should accept that data: [System.Serializable] public class ResultScript { public int id; public string name; } There is also a class that should accept the array of these objects (which the JSON is returning): [System.Serializable] public class ResultsContainer { public ResultScript[] results; } But when I run the code (in the debug mode, to get any result) I get an error: ArgumentException: JSON must represent an object type. I've googled it but none of the proposed solutions work for me. Also (regardless if I'm in the debug mode or not) when I try to do some string operations like removing or adding characters to the GET result, the functions return an empty string as a result Can you help me with any of these problems? Thank you

Networking and Multiplayer Programming Unity

Started by NDraskovic January 21, 2018 02:57 PM

11 comments, last by NDraskovic 6 years, 5 months ago

flodihn

292

January 21, 2018 09:09 PM

What you can do is using another deserializer than what Unity3D provides.

I hope you can get the result from the reserver as pure text, then you can feed it into a library like MiniJSON, instead of working with objects, you are given a dictionary with <string, object>. It has some advantages, like supporting more character in keys, for example:


{
   "this#would_not_work_in_unity_deserialiser": "But it works fine with MiniJSON"
}

However, the syntax ond access and update gets a bit uglier, also having all JSON as objects makes it more easy to see the format, just having a dictionary with anything with it is bit harder to debug. No big issue thou.

I have been using MiniJSON successfully myself. Here is a link to what I believe is its official github:

https://gist.github.com/darktable/1411710