C#•2y ago

Text.Json Error

Mates I am going fucking insane. I've been working on this for a while and it's just killing me.

"[{\"Id\":732870,\"UserId\":\"76561198432850031@steam\",\"LastSeen\":\"2022-12-27T00:31:32.738454\",\"FirstSeen\":\"2022-12-26T22:31:43.768427\",\"Activity\":{\"2022-12-26T00:00:00Z\":3209.0,\"2022-12-27T00:00:00Z\":1894.0},\"DoNotTrack\":false,\"Staff\":true,\"Kills\":0,\"Deaths\":0,\"ExperiencePoints\":0,\"ColaDrink\":1,\"Medkits\":0,\"AdrenalineShots\":0,\"Survival\":0,\"PocketEscapes\":0,\"RoundsPlayed\":6,\"Teamkills\":0,\"EscapeTimes\":[],\"Level\":0,\"Name\":null,\"IgnoreStats\":0}]"

"[{\"Id\":732870,\"UserId\":\"76561198432850031@steam\",\"LastSeen\":\"2022-12-27T00:31:32.738454\",\"FirstSeen\":\"2022-12-26T22:31:43.768427\",\"Activity\":{\"2022-12-26T00:00:00Z\":3209.0,\"2022-12-27T00:00:00Z\":1894.0},\"DoNotTrack\":false,\"Staff\":true,\"Kills\":0,\"Deaths\":0,\"ExperiencePoints\":0,\"ColaDrink\":1,\"Medkits\":0,\"AdrenalineShots\":0,\"Survival\":0,\"PocketEscapes\":0,\"RoundsPlayed\":6,\"Teamkills\":0,\"EscapeTimes\":[],\"Level\":0,\"Name\":null,\"IgnoreStats\":0}]"

I've got this json here. It's giving me this exception:

"System.Text.Json.JsonException: The JSON value could not be converted to StatsBot.JsonHelper+Player[]. Path: $ | LineNumber: 0 | BytePositionInLine: 495.

For some reason, when I use a different json (attached in image) it works. The code I'm using is

System.Text.Json.JsonSerializer.Deserialize<Player[]>(response.Content, Options);

System.Text.Json.JsonSerializer.Deserialize<Player[]>(response.Content, Options);

My options are just "PropertyNameCaseInsensitive" which is set to true.

32 Replies

Not Mark•2y ago

This might just be a copy-paste thing, but is there an end quote on the original json? Where are you reading the original json from? I copied the original and replaced the \" with just a " and it seems like valid json ignoring the starting "

warden161 🍉OP•2y ago

There is an ending quote i just mistyped that my bad Yeah I dont know why thats occuring

Not Mark•2y ago

How is it read in? Is it just hard coded in the same way your exampleData in the screenshot is shown?

warden161 🍉OP•2y ago

From a REST endpoint the json thing i sent is just response's content

Not Mark•2y ago

Can you do me a favor and copy and paste your Player model? I'm just trying to test it on my end to replicate your issue

warden161 🍉OP•2y ago

When I tried it in #bot-spam it returned that Yeah one sec I just have to remove the attribtues public class Player { public string UserId { get; set; } public int Kills { get; set; } public int Deaths { get; set; } public int ExperiencePoints { get; set; } public string LastSeen { get; set; } public string FirstSeen { get; set; } public int ColaDrinks { get; set; } public int Medkits { get; set; } public int AdrenalineShots { get; set; } public int PocketEscapes { get; set; } public int RoundsPlayed { get; set; } public bool DoNotTrack { get; set; } }

warden161 🍉OP•2y ago

Not Mark•2y ago

well that specific case you can't because the json represents a list of players But I think that's not the original issue you had?

warden161 🍉OP•2y ago

i mean, idk, when im deserializing im making it a Player[] object unless if that doesnt work

hime•2y ago

What's the 495th character in the string

warden161 🍉OP•2y ago

there doesnt seem to be 495 chars

Not Mark•2y ago

I think it's the end of the string when I tested it

MODiX•2y ago

hime#9583

REPL Result: Failure

"[{\"Id\":732870,\"UserId\":\"76561198432850031@steam\",\"LastSeen\":\"2022-12-27T00:31:32.738454\",\"FirstSeen\":\"2022-12-26T22:31:43.768427\",\"Activity\":{\"2022-12-26T00:00:00Z\":3209.0,\"2022-12-27T00:00:00Z\":1894.0},\"DoNotTrack\":false,\"Staff\":true,\"Kills\":0,\"Deaths\":0,\"ExperiencePoints\":0,\"ColaDrink\":1,\"Medkits\":0,\"AdrenalineShots\":0,\"Survival\":0,\"PocketEscapes\":0,\"RoundsPlayed\":6,\"Teamkills\":0,\"EscapeTimes\":[],\"Level\":0,\"Name\":null,\"IgnoreStats\":0}]"[495..]

"[{\"Id\":732870,\"UserId\":\"76561198432850031@steam\",\"LastSeen\":\"2022-12-27T00:31:32.738454\",\"FirstSeen\":\"2022-12-26T22:31:43.768427\",\"Activity\":{\"2022-12-26T00:00:00Z\":3209.0,\"2022-12-27T00:00:00Z\":1894.0},\"DoNotTrack\":false,\"Staff\":true,\"Kills\":0,\"Deaths\":0,\"ExperiencePoints\":0,\"ColaDrink\":1,\"Medkits\":0,\"AdrenalineShots\":0,\"Survival\":0,\"PocketEscapes\":0,\"RoundsPlayed\":6,\"Teamkills\":0,\"EscapeTimes\":[],\"Level\":0,\"Name\":null,\"IgnoreStats\":0}]"[495..]

Exception: ArgumentOutOfRangeException

- startIndex cannot be larger than length of string. (Parameter 'startIndex')

- startIndex cannot be larger than length of string. (Parameter 'startIndex')

Compile: 368.529ms | Execution: 48.480ms | React with ❌ to remove this embed.

hime•2y ago

warden161 🍉OP•2y ago

i dont understand what the fuck is going on

hime•2y ago

The error message It says it's in line 0 position 495 That's where the problem starts So I asked for the character at that position

warden161 🍉OP•2y ago

yeah but that doesnt seem to exist unless if im stupid

Not Mark•2y ago

What I'm guessing is what is happening is it's trying to deserialize "[{your_object}]" as a list of players instead of just [{your_object}] as a list of players. So it's taking a string representing a string literal which represents your json instead of just taking the string of your json

warden161 🍉OP•2y ago

That's a pretty good theory. I'm pretty sure you're right.

Not Mark•2y ago

I guess there are several ways to handle this. One way is to read the string response.Content and manually remove the " quotes at the beginning and end, and then deserialize. You could also deserialize response.Content into a string first and then deserialize that string into your Player[]. I just tested this way and it seems to work. I don't know if that's the best way of handling that though... lol

warden161 🍉OP•2y ago

RestSharp has a method to remove trailing quotes I believe

Not Mark•2y ago

You could try that. I find it odd though that the API you're interacting with is giving quotes wrapping the whole json in the response though

warden161 🍉OP•2y ago

It shouldn't do that, not sure why it does.

Angius•2y ago

Call the API with some REST client and see what the response is Hell, open the URL in the browser if it doesn't need any special auth

warden161 🍉OP•2y ago

it does but it does not return that, it returns it fine [{"Id":732870,"UserId":"76561198432850031@steam","LastSeen":"2022-12-27T00:31:32.738454","FirstSeen":"2022-12-26T22:31:43.768427","Activity":{"2022-12-26T00:00:00Z":3209.0,"2022-12-27T00:00:00Z":1894.0},"DoNotTrack":false,"Staff":true,"Kills":0,"Deaths":0,"ExperiencePoints":0,"ColaDrink":1,"Medkits":0,"AdrenalineShots":0,"Survival":0,"PocketEscapes":0,"RoundsPlayed":6,"Teamkills":0,"EscapeTimes":[],"Level":0,"Name":null,"IgnoreStats":0}]

MODiX•2y ago

Angius#1586

REPL Result: Success

using System.Text.Json;
var json = """
[{"Id":732870,"UserId":"76561198432850031@steam","LastSeen":"2022-12-27T00:31:32.738454","FirstSeen":"2022-12-26T22:31:43.768427","Activity":{"2022-12-26T00:00:00Z":3209.0,"2022-12-27T00:00:00Z":1894.0},"DoNotTrack":false,"Staff":true,"Kills":0,"Deaths":0,"ExperiencePoints":0,"ColaDrink":1,"Medkits":0,"AdrenalineShots":0,"Survival":0,"PocketEscapes":0,"RoundsPlayed":6,"Teamkills":0,"EscapeTimes":[],"Level":0,"Name":null,"IgnoreStats":0}]
""";
class Player
{
        public string UserId { get; set; }
        public int Kills { get; set; }
        public int Deaths { get; set; }
        public int ExperiencePoints { get; set; }
        public string LastSeen { get; set; }
        public string FirstSeen { get; set; }
        public int ColaDrinks { get; set; }
        public int Medkits { get; set; }
        public int AdrenalineShots { get; set; }
        public int PocketEscapes { get; set; }
        public int RoundsPlayed { get; set; }
        public bool DoNotTrack { get; set; }
}
JsonSerializer.Deserialize<List<Player>>(json)

using System.Text.Json;
var json = """
[{"Id":732870,"UserId":"76561198432850031@steam","LastSeen":"2022-12-27T00:31:32.738454","FirstSeen":"2022-12-26T22:31:43.768427","Activity":{"2022-12-26T00:00:00Z":3209.0,"2022-12-27T00:00:00Z":1894.0},"DoNotTrack":false,"Staff":true,"Kills":0,"Deaths":0,"ExperiencePoints":0,"ColaDrink":1,"Medkits":0,"AdrenalineShots":0,"Survival":0,"PocketEscapes":0,"RoundsPlayed":6,"Teamkills":0,"EscapeTimes":[],"Level":0,"Name":null,"IgnoreStats":0}]
""";
class Player
{
        public string UserId { get; set; }
        public int Kills { get; set; }
        public int Deaths { get; set; }
        public int ExperiencePoints { get; set; }
        public string LastSeen { get; set; }
        public string FirstSeen { get; set; }
        public int ColaDrinks { get; set; }
        public int Medkits { get; set; }
        public int AdrenalineShots { get; set; }
        public int PocketEscapes { get; set; }
        public int RoundsPlayed { get; set; }
        public bool DoNotTrack { get; set; }
}
JsonSerializer.Deserialize<List<Player>>(json)

Result: List<Player>

[
  {
    "userId": "76561198432850031@steam",
    "kills": 0,
    "deaths": 0,
    "experiencePoints": 0,
    "lastSeen": "2022-12-27T00:31:32.738454",
    "firstSeen": "2022-12-26T22:31:43.768427",
    "colaDrinks": 0,
    "medkits": 0,
    "adrenalineShots": 0,
    "pocketEscapes": 0,
    "roundsPlayed": 6,
    "doNotTrack": false
  }
]

[
  {
    "userId": "76561198432850031@steam",
    "kills": 0,
    "deaths": 0,
    "experiencePoints": 0,
    "lastSeen": "2022-12-27T00:31:32.738454",
    "firstSeen": "2022-12-26T22:31:43.768427",
    "colaDrinks": 0,
    "medkits": 0,
    "adrenalineShots": 0,
    "pocketEscapes": 0,
    "roundsPlayed": 6,
    "doNotTrack": false
  }
]

Compile: 583.543ms | Execution: 61.425ms | React with ❌ to remove this embed.

Angius•2y ago

¯\_(ツ)_/¯ Works fine

warden161 🍉OP•2y ago

yeah restsharp seems to be fucking it up with however its getting the string

Angius•2y ago

Don't use RestSharp Just use HttpClient

var data = await _client.GetFromJsonAsync<Player[]>(yourUrl);

var data = await _client.GetFromJsonAsync<Player[]>(yourUrl);

boom done

warden161 🍉OP•2y ago

how does one add a header to this

Angius•2y ago

_client.DefaultRequestHeaders.Add("Foo", "Bar");

_client.DefaultRequestHeaders.Add("Foo", "Bar");

for example

warden161 🍉OP•2y ago

thanks!

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Text.Json Error