.NET NewtonSoft JSON反序列化到一个不同的属性名称映射

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.NET NewtonSoft JSON反序列化到一个不同的属性名称映射

我收到了一个外部方发来的JSON字符串，如下所示：

{
   "team":[
      {
         "v1":"",
         "attributes":{
            "eighty_min_score":"",
            "home_or_away":"home",
            "score":"22",
            "team_id":"500"
         }
      },
      {
         "v1":"",
         "attributes":{
            "eighty_min_score":"",
            "home_or_away":"away",
            "score":"30",
            "team_id":"600"
         }
      }
   ]
}

我的映射类：

public class Attributes
{
    public string eighty_min_score { get; set; }
    public string home_or_away { get; set; }
    public string score { get; set; }
    public string team_id { get; set; }
}
public class Team
{
    public string v1 { get; set; }
    public Attributes attributes { get; set; }
}
public class RootObject
{
    public List team { get; set; }
}

问题在于我不喜欢Attributes类名和Team类中的attributes字段名。相反，我想将其命名为TeamScore，并且去掉字段名中的_并给它们适当的名称。

JsonConvert.DeserializeObject(jsonText);

我可以将Attributes重命名为TeamScore，但如果我改变字段名（在Team类中的attributes），它不会正确反序列化，会给我返回null。我该如何克服这个问题呢？

admin 更改状态以发布 2023年5月23日
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2 答案

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如果您想使用动态映射，并且不想在模型中混杂着属性，这个方法适用于我。

使用方法：

var settings = new JsonSerializerSettings();
settings.DateFormatString = "YYYY-MM-DD";
settings.ContractResolver = new CustomContractResolver();
this.DataContext = JsonConvert.DeserializeObject(jsonString, settings);

逻辑：

public class CustomContractResolver : DefaultContractResolver
{
    private Dictionary PropertyMappings { get; set; }
    public CustomContractResolver()
    {
        this.PropertyMappings = new Dictionary 
        {
            {"Meta", "meta"},
            {"LastUpdated", "last_updated"},
            {"Disclaimer", "disclaimer"},
            {"License", "license"},
            {"CountResults", "results"},
            {"Term", "term"},
            {"Count", "count"},
        };
    }
    protected override string ResolvePropertyName(string propertyName)
    {
        string resolvedName = null;
        var resolved = this.PropertyMappings.TryGetValue(propertyName, out resolvedName);
        return (resolved) ? resolvedName : base.ResolvePropertyName(propertyName);
    }
}

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0 Comments

Json.NET - Newtonsoft有一个JsonPropertyAttribute，可以让你指定一个JSON属性的名称，所以你的代码应该是：

public class TeamScore
{
    [JsonProperty("eighty_min_score")]
    public string EightyMinScore { get; set; }
    [JsonProperty("home_or_away")]
    public string HomeOrAway { get; set; }
    [JsonProperty("score ")]
    public string Score { get; set; }
    [JsonProperty("team_id")]
    public string TeamId { get; set; }
}
public class Team
{
    public string v1 { get; set; }
    [JsonProperty("attributes")]
    public TeamScore TeamScores { get; set; }
}
public class RootObject
{
    public List Team { get; set; }
}

文档：序列化属性

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