Question

我遇到了一种奇怪的行为。我的web.api在GET请求中仅从我的ObjectCollection返回隐藏字段。这是我的控制者：

// GET: api/UserDocuments
[Route("api/UserDocuments/User/{userName}")]
public List<DocIndex> Get(string userName)
{
    User usuari = Humanisme.User.LoadByUserName(userName);
    List<DocIndex> resposta = DocumentCollection.LoadIndexPerUsuari(usuari);
    return resposta;
}

这是从BOM中生成的对象：

    namespace Humanisme
    {
    using CodeFluent.Runtime;
    using CodeFluent.Runtime.Utilities;


    // CodeFluent Entities generated (http://www.softfluent.com). Date: Tuesday, 01 March 2016 11:52.
    // Build:1.0.61214.0820
    [System.CodeDom.Compiler.GeneratedCodeAttribute("CodeFluent Entities", "1.0.61214.0820")]
    [System.SerializableAttribute()]
    [System.ComponentModel.DataObjectAttribute()]
    public partial class DocIndex : CodeFluent.Runtime.ICodeFluentLightEntity
    {

        private int _id = -1;

        [System.NonSerializedAttribute()]
        private Humanisme.User _user = ((Humanisme.User)(null));

        private string _lat = default(string);

        private string _lon = default(string);

        private string _etapaVital = default(string);

        private string _solvencia = default(string);

        private int _valoracio = CodeFluentPersistence.DefaultInt32Value;

        private System.DateTime _data = CodeFluentPersistence.DefaultDateTimeValue;

        private string _nom = default(string);

        public DocIndex()
        {
        }

        [System.ComponentModel.DefaultValueAttribute(((int)(-1)))]
        [System.Xml.Serialization.XmlElementAttribute(IsNullable=false, Type=typeof(int))]
        [System.ComponentModel.DataObjectFieldAttribute(true)]
        public int Id
        {
            get
            {
                return this._id;
            }
            set
            {
                this._id = value;
            }
        }

        [System.Xml.Serialization.XmlIgnoreAttribute()]
        public Humanisme.User User
        {
            get
            {
                return this._user;
            }
            set
            {
                this._user = value;
            }
        }

        [System.ComponentModel.DefaultValueAttribute(default(string))]
        [System.Xml.Serialization.XmlElementAttribute(IsNullable=true, Type=typeof(string))]
        public string Lat
        {
            get
            {
                return this._lat;
            }
            set
            {
                this._lat = value;
            }
        }

        [System.ComponentModel.DefaultValueAttribute(default(string))]
        [System.Xml.Serialization.XmlElementAttribute(IsNullable=true, Type=typeof(string))]
        public string Lon
        {
            get
            {
                return this._lon;
            }
            set
            {
                this._lon = value;
            }
        }

        [System.ComponentModel.DefaultValueAttribute(default(string))]
        [System.Xml.Serialization.XmlElementAttribute(IsNullable=true, Type=typeof(string))]
        public string EtapaVital
        {
            get
            {
                return this._etapaVital;
            }
            set
            {
                this._etapaVital = value;
            }
        }

        [System.ComponentModel.DefaultValueAttribute(default(string))]
        [System.Xml.Serialization.XmlElementAttribute(IsNullable=true, Type=typeof(string))]
        public string Solvencia
        {
            get
            {
                return this._solvencia;
            }
            set
            {
                this._solvencia = value;
            }
        }

        [System.ComponentModel.DefaultValueAttribute(CodeFluentPersistence.DefaultInt32Value)]
        [System.Xml.Serialization.XmlElementAttribute(IsNullable=false, Type=typeof(int))]
        public int Valoracio
        {
            get
            {
                return this._valoracio;
            }
            set
            {
                this._valoracio = value;
            }
        }

        [System.Xml.Serialization.XmlElementAttribute(IsNullable=false, Type=typeof(System.DateTime))]
        public System.DateTime Data
        {
            get
            {
                return this._data;
            }
            set
            {
                this._data = value;
            }
        }

        [System.ComponentModel.DefaultValueAttribute(default(string))]
        [System.Xml.Serialization.XmlElementAttribute(IsNullable=true, Type=typeof(string))]
        public string Nom
        {
            get
            {
                return this._nom;
            }
            set
            {
                this._nom = value;
            }
        }

        protected virtual void ReadRecord(System.Data.IDataReader reader, CodeFluent.Runtime.CodeFluentReloadOptions options)
        {
            if ((reader == null))
            {
                throw new System.ArgumentNullException("reader");
            }
            if ((((options & CodeFluent.Runtime.CodeFluentReloadOptions.Properties) 
                        == 0) 
                        == false))
            {
                this._id = CodeFluentPersistence.GetReaderValue(reader, "Id", ((int)(-1)));
                this._user = new Humanisme.User();
                CodeFluent.Runtime.CodeFluentLightWeightPersistence.ReadRecord(reader, this._user, null, new CodeFluent.Runtime.Utilities.Pair<string, string>("Id", "User_Id"));
                this._lat = CodeFluentPersistence.GetReaderValue(reader, "Lat", ((string)(default(string))));
                this._lon = CodeFluentPersistence.GetReaderValue(reader, "Lon", ((string)(default(string))));
                this._etapaVital = CodeFluentPersistence.GetReaderValue(reader, "EtapaVital", ((string)(default(string))));
                this._solvencia = CodeFluentPersistence.GetReaderValue(reader, "Solvencia", ((string)(default(string))));
                this._valoracio = CodeFluentPersistence.GetReaderValue(reader, "Valoracio", ((int)(CodeFluentPersistence.DefaultInt32Value)));
                this._data = CodeFluentPersistence.GetReaderValue(reader, "Data", ((System.DateTime)(CodeFluentPersistence.DefaultDateTimeValue)));
                this._nom = CodeFluentPersistence.GetReaderValue(reader, "Nom", ((string)(default(string))));
            }
        }

        void CodeFluent.Runtime.ICodeFluentLightEntity.ReadRecord(System.Data.IDataReader reader)
        {
            this.ReadRecord(reader, CodeFluent.Runtime.CodeFluentReloadOptions.Default);
        }
    }
}

调用web.api get方法返回此JSON：

[
  {
    "_id": 1,
    "_lat": null,
    "_lon": null,
    "_etapaVital": null,
    "_solvencia": null,
    "_valoracio": 0,
    "_data": "0001-01-01T00:00:00",
    "_nom": null
  }
]

Serializer（来自WebApiConfig.cs）

JsonMediaTypeFormatter jsonFormatter = (JsonMediaTypeFormatter)config.Formatters.FirstOrDefault(f => f is JsonMediaTypeFormatter);
        if (jsonFormatter != null)
        {
           // jsonFormatter.SerializerSettings.NullValueHandling = NullValueHandling.Include;
            jsonFormatter.UseDataContractJsonSerializer = true;
        }

Answer 1

CodeFluent实体生成的类由SerializableAttribute修饰。此属性更改Json.NET序列化或反序列化对象的方式。您可以配置Json.NET以忽略此属性：

JsonMediaTypeFormatter jsonFormatter = (JsonMediaTypeFormatter)config.Formatters.FirstOrDefault(f => f is JsonMediaTypeFormatter);
if (jsonFormatter != null)
{
    jsonFormatter.SerializerSettings.ContractResolver = new DefaultContractResolver()
    {
        IgnoreSerializableAttribute = true
    };
}

http://james.newtonking.com/archive/2012/04/11/json-net-4-5-release-2-serializable-support-and-bug-fixes

Json.NET现在检测具有SerializableAttribute的类型并序列化该类型的所有字段，包括公共和私有，并忽略属性

因此，您可以使用将添加DataMemberAttribute的服务生产者，或者您可以使用Json.NET Aspect自动添加特定的Json.NET属性：Newtonsoft.Json.JsonObjectAttribute和Newtonsoft.Json.JsonPropertyAttribute。

Answer 2

终于找到了！

在处理web.api时，永远不要忘记添加＆＃34; Service Producer＆＃34;子模型附加到模型项目中的标准BOM生产者。

您永远不会注意到任何问题，但在序列化时不会处理任何属性，只有隐藏属性（对象字段）将在输出处序列化。

对不起书呆子的错误，对所吸取的教训感到高兴。

再次感谢Meziantou。你永远不会想到问题的起源，主要是因为我没有把所有的项目细节都带到这个问题上。

web.api仅序列化隐藏字段

2 个答案: