WEB API JSON序列化循环引用

Question

我正在尝试从Web API接收的子实体访问属性字段(JSON).但是,通过查看浏览器控制台,它显示的是引用而不是字段.如何访问这些字段？

ANGULAR JS VIEW

 <table infinite-scroll='tF.loadMore()' infinite-scroll-disabled='tF.isBusy' infinite-scroll-distance='3' class="responsive">
            <thead>
                <tr>
                    <th>FIELD 1</th>
                    <th>FIELD 2</th>
                    <th>FIELD 3</th>
                    <th>FIELD 4</th>
                    <th>FIELD 5</th>
                </tr>
            </thead>
            <tbody>
                <tr ng-repeat="item in tF.items | filter:searchFilter">
                    <td>{{item.CompanyDomainModel.CompanyName}}</td>
                    <td>{{item.RatingDomainModel.RatingValue}}</td>
                    <td>{{item.Views}}</td>
                    <td>{{item.Clicks}}</td>
                    <td>{{item.EmailSent}}</td>
                </tr>
            </tbody>
            <tfoot ng-show='tF.isBusy'>
                <tr>
                    <td colspan="9"><spinner show="tF.isBusy" /><span class="bold">{{tF.status}}</span> </td>
                </tr>
            </tfoot>
        </table>

服务

public ICollection<CompanyStatDomainModel> GetRecordsByPageSize(int page) { 
  const int pgeSize = 20; 
  var result = _companyStatRepo
    .AllIncluding(c => c.CompanyDomainModel, c => c.RatingDomainModel) 
    .OrderBy(c => c.CompanyStatId)
    .Skip(page * pgeSize)
    .Take(pgeSize)
    .ToList(); 
  return result; 
} 

端点

IHttpActionResult GetRecordsByPageSize(int page) { 
  var companyStatService = new CompanyStatService(); 
  return Ok(companyStatService.GetRecordsByPageSize(page)); 
} 

评分域模型

 public class RatingDomainModel : IObjectWithState
{
    [Key, DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    [DataMember]
    public int RatingId { get; set; }

    [DataMember]
    public int CompanyId { get; set; }

    [DataMember]
    public int UserId { get; set; }

    [DataMember]
    public int RatingValue { get; set; }

    [DataMember]
    public DateTime CreatedDate { get; set; }

    //[ForeignKey("UserId")]
    [DataMember]
    public virtual UserDomainModel UserDomainModel { get; set; }

    //[ForeignKey("CompanyId")]
    [DataMember]
    public virtual CompanyDomainModel CompanyDomainModel { get; set; }

    [DataMember]
    public virtual ICollection<CompanyStatDomainModel> CompanyStatDomainModels { get; set; }

    [NotMapped]
    public Common.DataObject.State state { get; set; }

    [NotMapped]
    public bool InDb
    {
        get { return this.RatingId != default(int); }
    }

    public object PersistenceEntityId
    {
        get { return this.RatingId; }
    }
}

OUTPUT

Answer 1

将以下代码添加到WebApiConfig.cs中

config.Formatters.JsonFormatter.SerializerSettings.ReferenceLoopHandling =    Newtonsoft.Json.ReferenceLoopHandling.Ignore;
config.Formatters.JsonFormatter.SerializerSettings.PreserveReferencesHandling = Newtonsoft.Json.PreserveReferencesHandling.None;