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分析API响应时遇到意外字符

json.net asp.net-web-api asp.net-mvc

Praveen Rao Chavan.G · 技术社区 · 6 年前

我有个例外:

HResult=0x80131500

从API反序列化响应数据时。 (帖子结尾处有完整的例外)

代码

return JsonConvert.DeserializeObject(webResponseEntity.ResponseData, typeof(CarLookupResponse)) as CarLookupResponse;

模型

   public class CarLookupResponse : ICarLookupResponse
    {
        public ICarLookupResult Result { get; set; }

        public ICarLookupOutputObject OutputObject { get; set; }

        public CarLookupResponse()
        {
            Result = new CarLookupResult();
            OutputObject = new CarLookupOutputObject();
        }
    }

输出对象接口

public interface ICarLookupOutputObject 
    {
        int  CarId { get; set; }

        string CartestId { get; set; }

        int[] ModelYears { get; set; }

        string FirstName { get; set; }

        string LastName { get; set; }

        string Email { get; set; }

        string SSN { get; set; }

        string Address { get; set; }
    }

JSON格式

   {
     "result": {
        "id": 1,
        "value": "lookup successful.",
        "error": null
      },
      "outputObject": {
        "CarId": 2025,
        "CartestId": "testing-02",
        "ModelYears": [
          2017,
          2018
        ],
        "firstName": "Troy",
        "lastName": "Aaster",
        "email": "testuser@gmail.com",
        "address": {
          "apartment": "",
          "state": "CA",
          "city": "BRISBANE",
          "zipCode": "94005",
          "streetAddress": "785, SPITZ BLVD"
        },
        "ssn": "511-04-6666"
      }
    }

JSON格式 是有效的,我已经检查过了。

Newtonsoft.Json.JsonReaderException HResult=0x80131500 源=Newtonsoft.Json 堆栈跟踪: 在Newtonsoft.Json.JsonTextReader.ReadStringValue(ReadType ReadType) 在Newtonsoft.Json.JsonTextReader.ReadAsString() 在Newtonsoft.Json.JsonReader.ReadForType(Json contract契约,布尔hascoverter) 在Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject,JsonReader reader,JsonObjectContract contract,JsonProperty member,String id) 在Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader读取器,类型objectType,JsonContract协定,JsonProperty成员,JsonContainerContract containerContract,JsonProperty containerMember,对象existingValue) 在Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue上(JsonProperty属性、JsonConverter属性Converter、JsonContainerContract containerContract、JsonProperty containerProperty、JsonReader读取器、对象目标) 在Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject,JsonReader reader,JsonObjectContract contract,JsonProperty member,String id) 在Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader读取器,类型objectType,JsonContract协定,JsonProperty成员,JsonContainerContract containerContract,JsonProperty containerMember,对象existingValue) 在Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(Json reader reader,Type objectType,Boolean checkAdditionalContent) 在Newtonsoft.Json.JsonSerializer.DeserializeInternal(Json reader reader,键入objectType) 在Newtonsoft.Json.JsonConvert.DeserializeObject(字符串值、类型类型、JsonSerializerSettings设置)

1 回复 | 直到 6 年前

Marcus Höglund 5 年前

你的问题是你已经宣布 CarLookupOutputObject.Address 成为 string

"address": {
  "apartment": "",
  ...
},

如its中所述 Serialization Guide ,只有基元.Net类型和可转换为 一串 "address" 不是基元的,则引发异常。

http://json2csharp.com/ :

public class CarLookupOutputObject 
{
    public Address address { get; set; }

    // Remainder unchanged
}

public class Address
{
    public string apartment { get; set; }
    public string state { get; set; }
    public string city { get; set; }
    public string zipCode { get; set; }
    public string streetAddress { get; set; }
}