解析值 ASP.NET Core 和 Newtonsoft 时遇到意外字符

Unexpected character encountered while parsing value ASP.NET Core and Newtonsoft

我试图在我的 ASP.NET 核心应用程序中使用 Newtonsoft 将 JSON 文件解析为对象,但我不断收到此错误:

Newtonsoft.Json.JsonReaderException: 'Unexpected character encountered while parsing value: {. Path 'palette.swatch', line 7, position 15.'

我试过使用 StreamReader class,现在 MemoryStream class。我已经确认在线验证 JSON 并检查它也是 UTF-8。两种方式我都收到相同的错误。我还手动检查了 JSON 但我看不到任何会使其不可读的内容。

这是抛出异常的方法:

public async Task<int> PostDefinition(IFormFile file)
{
    MemoryStream ms = new MemoryStream();
    file.CopyTo(ms);
    byte[] bytes = ms.ToArray();
    string s = Encoding.UTF8.GetString(bytes);

    Definition definition = Newtonsoft.Json.JsonConvert.DeserializeObject<Definition>(s);
    Definition x = ObjectMapper.Map<Definition>(Definition);

    return await _definitions.InsertAndGetIdAsync(x);
}

这是抛出错误的 JSON 片段:

{
  "name": "Definition",
  "id": 2,
  "palette": {
    "name": "Test Palette",
    "default": false,
    "swatch": {
      "colors": {
        "Color 1": "transparent",
        "Color 2": "transparent",
        "Color 3": "transparent",
        "Color 4": "transparent",
        "Color 5": "transparent",
        "Color 6": "transparent",
        "Color 7": "transparent",
        "Color 8": "transparent"
      }
    }
  }
}

什么可能导致异常,我可以尝试如何补救?我试过搜索,但似乎没有任何效果。

这对我有用

 Definition definition = Newtonsoft.Json.JsonConvert.DeserializeObject<Definition>(s);

public partial class Definition
    {
        [JsonProperty("name")]
        public string Name { get; set; }

        [JsonProperty("id")]
        public long Id { get; set; }

        [JsonProperty("palette")]
        public Palette Palette { get; set; }
    }

    public partial class Palette
    {
        [JsonProperty("name")]
        public string Name { get; set; }

        [JsonProperty("default")]
        public bool Default { get; set; }

        [JsonProperty("swatch")]
        public Swatch Swatch { get; set; }
    }

    public partial class Swatch
    {
        [JsonProperty("colors")]
        public Dictionary<string,string> Colors { get; set; }
    }