C＃ - 處理財產，可以是單一和陣列時，XML反序列化

Question

我有一個XML看起來像這樣的，我需要反序列化：

<?xml version="1.0" encoding="utf-8" ?> 
<Root xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> 
    <Countries> 
     <Country> 
     <CountryCode>CN</CountryCode> 
     <CurrentStatus>Active</CurrentStatus> 
     </Country> 
    </Countries> 

    <Countries> 
     <Country> 
     <CountryCode>AU</CountryCode> 
     <CurrentStatus>Cancelled</CurrentStatus> 
     </Country> 
     <Country> 
     <CountryCode>CN</CountryCode> 
     <CurrentStatus>Cancelled</CurrentStatus> 
     </Country> 
     <Country> 
     <CountryCode>US</CountryCode> 
     <CurrentStatus>Active</CurrentStatus> 
     </Country> 
    </Countries> 

    <Countries xsi:nil="true" /> 
</Root> 

我在這裏的問題是，各國可以有國家作爲單一和數組，如你所見。爲了得到它的工作，我現在把它作爲object類型，但它很難處理。解決這個問題的最佳解決方案是什麼？我將它轉換爲json，因爲我們所有的其他系統都使用它，這是我們唯一具有XML的文件。

public class Country 
{ 

    [JsonProperty("CountryCode")] 
    public string CountryCode { get; set; } 

    [JsonProperty("CurrentStatus")] 
    public string CurrentStatus { get; set; } 
} 

public class CountryInfo 
{ 
    [JsonProperty("Country")] 
    public object Country { get; set; } 

    //Does not work 
    //[JsonProperty("Country")] 
    //public IList<Country> Country { get; set; } 
} 

public class Root 
{ 
    [JsonProperty("Countries")] 
    public IList<CountryInfo> Countries { get; set; } 
} 

public class ExampleCountry 
{ 
    [JsonProperty("Root")] 
    public Root Root { get; set; } 
} 

XmlDocument xmlDoc = new XmlDocument(); 
xmlDoc.LoadXml(xml); 
string json = JsonConvert.SerializeXmlNode(xmlDoc); 
var exampleCountries = JsonConvert.DeserializeObject<ExampleCountry>(json); 

更新：

如果我能public IList<Country> Country { get; set; }我收到以下錯誤：

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

Answer 1

使用這個答案解決它：

https://stackoverflow.com/a/18997172/3850405

public class CountryInfo 
{ 
    [JsonProperty("Country")] 
    [JsonConverter(typeof(SingleOrArrayConverter<Country>))] 
    public IList<Country> Country { get; set; } 
} 

public class SingleOrArrayConverter<T> : JsonConverter 
{ 
    public override bool CanConvert(Type objectType) 
    { 
     return (objectType == typeof(List<T>)); 
    } 

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer) 
    { 
     JToken token = JToken.Load(reader); 
     if (token.Type == JTokenType.Array) 
     { 
      return token.ToObject<List<T>>(); 
     } 
     return new List<T> { token.ToObject<T>() }; 
    } 

    public override bool CanWrite 
    { 
     get { return false; } 
    } 

    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) 
    { 
     throw new NotImplementedException(); 
    } 
}