Cannot deserialize JSON object

Your typical error:

JsonSerializationException: Cannot deserialize the current JSON array (e.g. [1,2,3]) into type 'blablabla' because the type requires a JSON object (e.g. {"name":"value"}) to deserialize correctly.

I went to JSONLint which claims my JSON is valid.
Sometime back one of you wondered whether there was a "BOM" in my file, I don't know, so here are the hexes:


I have Debug.Logged the value directly one line before attempt of deserialization (the location where the error is thrown). Console shows indeed a string and that string is my JSON string.

Weirdly enough I have a general function that handles this (it skips loops, read files and then deserializes it), this is 3th line that throws an error. I used this function twice before and no errors, but it somehow is stuck on this line.

So, what should I do?

1. Yes, the path is correct, otherwise it wouldn't read the JSON into console log.
2. Nothing is changed between them, its a closed function that simply performs some internal processing.

 

Assuming that you're using JSONUtility -- JSONUtility doesn't support deserializing raw arrays (eg.

[1,2,3]

), even though that is technically a valid JSON object. In order to deserialize lists or arrays, you need to place them inside of another object and serialize that, eg.

Code (CSharp):

1. [Serializable]
2. class ListWrapper {
3.   public List<int> list;
4. }

Which will give you JSON along the lines of

{ "list": [1,2,3] }

.

This is what the error was referring to.

 

I'm so sorry, I forgot to include the line that causes this mess:

return JsonConvert.DeserializeObject<T>(data);

Does this change your answer?

 

JsonConvert can handle deserializing lists, but this also isn't a Unity-specific issue. Here is a StackOverflow question about this error.

 

Ah, I see. Instead of defining it as single item, I defined the T to be a List<T>. Now it works. Thanks.

I doubt more than 10% of Scripting forum's threads are actually about Unity-specific issues. I believe majority, including myself, use this forum as means to get help from good-willed people in any C# questions that are involved in creation of a videogame in Unity. Major of our troubles don't come from misuse of Unity, but lack of understanding of C#.