休息 – 无法序列化内容类型的响应正文
我正在构建一个使用控制器和ApiControllers的MVC4应用程序.我修改了默认的Web API路由以包含动作名称.当我尝试获得基准列表时,我收到此错误消息:
InnerException是这样的(我在这种情况下返回JSON,与XML相同): "InnerException": { "Message": "An error has occurred.","ExceptionMessage": "Error getting value from 'IdentityEqualityComparer' on 'NHibernate.Proxy.DefaultLazyInitializer'.","ExceptionType": "Newtonsoft.Json.JsonSerializationException","StackTrace": " at Newtonsoft.Json.Serialization.DynamicValueProvider.GetValue(Object target) at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer,Object value,JsonObjectContract contract,JsonProperty member,JsonContainerContract collectionContract,JsonProperty containerProperty) at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer,JsonContract valueContract,JsonContainerContract containerContract,JsonProperty containerProperty) at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeISerializable(JsonWriter writer,ISerializable value,JsonISerializableContract contract,JsonProperty containerProperty) at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer,JsonProperty containerProperty) at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeList(JsonWriter writer,IWrappedCollection values,JsonArrayContract contract,JsonProperty containerProperty) at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.Serialize(JsonWriter jsonWriter,Object value) at Newtonsoft.Json.JsonSerializer.SerializeInternal(JsonWriter jsonWriter,Object value) at System.Net.Http.Formatting.JsonMediaTypeFormatter.<>c__DisplayClassd.<WriteToStreamAsync>b__c() at System.Threading.Tasks.TaskHelpers.RunSynchronously(Action action,CancellationToken token)","InnerException": { "Message": "An error has occurred.","ExceptionMessage": "Common Language Runtime detected an invalid program.","ExceptionType": "System.InvalidProgramException","StackTrace": " at GetIdentityEqualityComparer(Object ) at Newtonsoft.Json.Serialization.DynamicValueProvider.GetValue(Object target)" } 这是我运行的代码: // GET api/benchmark/getincomplete [HttpGet] public IList<Benchmark> GetIncomplete() { var s = HibernateModule.CurrentSession; var benchList = s.QueryOver<Benchmark>() .Where(b => !b.Completed) .Where(b => !b.Deleted) .OrderBy(b => b.Id).Asc .List<Benchmark>(); return benchList; } 这是基准模型: public class Benchmark { public virtual int Id { get; set; } [Required] [DataType(DataType.Date)] public virtual DateTime Date { get; set; } [Required,ScriptIgnore] public virtual IList<TestResult> Results { get; set; } [Required] public virtual IList<TestCase> TestCases { get; set; } [AllowHtml] public virtual string Description { get; set; } public virtual Device Device { get; set; } public virtual bool Published { get; set; } [Display(Name = "Deleted"),ScriptIgnore] public virtual bool Deleted { get; set; } public virtual bool Completed { get; set; } public Benchmark() { Results = new List<TestResult>(); TestCases = new List<TestCase>(); Published = false; Deleted = false; Completed = false; } } 我不太清楚问题所在.可能是NHibernate Proxy(我使用Fluent NHibernate)吗?奇怪的是,如果我不使用ApiController,并手动返回JSON,这很好用! 更新: 根据下面的答案,这是我在Application_Start()中添加的代码: HttpConfiguration config = GlobalConfiguration.Configuration; ((DefaultContractResolver)config.Formatters.JsonFormatter.SerializerSettings.ContractResolver).IgnoreSerializableAttribute = true; 解决方法
NHibernate框架中的
IdentityEqualityCompairer 似乎有[SerializableAttribute]注释.
从对这个答案的评论来看,Why won’t Web API deserialize this but JSON.Net will?看起来,JSON.NET在WebApi使用和独立使用之间配置有所不同.
因此,由于您无法使用[SerializableAttribute](因为它不在代码中),您可以尝试更改默认的WebApi JSON.NET设置,以忽略它使用此答案here: ((DefaultContractResolver)config.Formatters.JsonFormatter.SerializerSettings.ContractResolver).IgnoreSerializableAttribute = true; 也可以考虑使用DTO将您的结果发送到响应中 – 这将使您完全控制通过电线发送的对象. (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |