2016-08-23 40 views
0

下面是我使用的应用程序的ModelState ERRORMESSAGE是Web API空

public class APIVesselFilter 
    { 
     [Required(ErrorMessage = "Vessel is required")] 
     public Guid VesselID { get; set; } 

     public Guid? AnchorageID { get; set; } 

    } 

继模型类的验证器将检查ModelState中是有效的,如果没有有效的我会发送错误信息。

public class ValidateModelAttribute : ActionFilterAttribute 
    { 
     public override void OnActionExecuting(HttpActionContext actionContext) 
     { 
      if (actionContext.ModelState.IsValid == false) 
      { 
       List<string> errorList = new List<string>(); 
       foreach (var err in actionContext.ModelState.Values) 
       { 

        foreach (var er in err.Errors) 
        { 
         errorList.Add(er.ErrorMessage); 
        } 
       } 
       actionContext.Response = actionContext.Request.CreateResponse(APIResponse.SendResponse(RequestStatus.GetValidationFailedMessage(), actionContext.ModelState)); 
      } 
     } 
    } 

这里,以下是我使用上述模型状态的响应。在这里,错误消息不是用户可以理解的方式,所以我在Vessel的Require属性中添加了ErrorMessage,并循环了ModelState中的错误。但是我的错误信息总是空的(我使用调试器检查过)。我在这里错过了什么,以便错误消息将直接绑定到ModelState?

{ 
    "Status": { 
    "StatusCode": 620, 
    "StatusMessage": "Validation Failed" 
    }, 
    "Data": { 
    "filter": { 
     "_errors": [ 
     { 
      "<Exception>k__BackingField": { 
      "ClassName": "Newtonsoft.Json.JsonSerializationException", 
      "Message": "Required property 'VesselID' not found in JSON. Path '', line 1, position 56.", 
      "Data": null, 
      "InnerException": null, 
      "HelpURL": null, 
      "StackTraceString": " at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.EndObject(Object newObject, JsonReader reader, JsonObjectContract contract, Int32 initialDepth, Dictionary`2 propertiesPresence)", 
      "RemoteStackTraceString": null, 
      "RemoteStackIndex": 0, 
      "ExceptionMethod": "8\nEndObject\nNewtonsoft.Json, Version=6.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed\nNewtonsoft.Json.Serialization.JsonSerializerInternalReader\nVoid EndObject(System.Object, Newtonsoft.Json.JsonReader, Newtonsoft.Json.Serialization.JsonObjectContract, Int32, System.Collections.Generic.Dictionary`2[Newtonsoft.Json.Serialization.JsonProperty,Newtonsoft.Json.Serialization.JsonSerializerInternalReader+PropertyPresence])", 
      "HResult": -2146233088, 
      "Source": "Newtonsoft.Json", 
      "WatsonBuckets": null 
      }, 
      "<ErrorMessage>k__BackingField": "" 
     } 
     ], 
     "<Value>k__BackingField": null 
    } 
    } 
} 

回答

0

尝试用DisplayAttribute装饰你的模型属性:

public class APIVesselFilter 
{ 
    [Required] 
    [Display(Name="Vessel is required")] 
    public Guid VesselID { get; set; } 

    public Guid? AnchorageID { get; set; } 

} 

我知道使用Html.ValidationSummary和快速测试时,这是自定义邮件的方式表明此检查的ModelState中,当出现一种行为。

0

使用CreateErrorResponse代替CreateResponse可能会解决您的问题。 我遇到了一个熟悉的问题,并被修复了。 在你的情况,这将是

actionContext.Response = actionContext.Request.CreateErrorResponse(APIResponse.SendResponse(RequestStatus.GetValidationFailedMessage(), actionContext.ModelState)); 
+0

尽管此代码可以回答这个问题,提供了关于如何和/或为什么它解决了这个问题将改善答案的长期价值附加的上下文。请阅读此[如何回答](http://stackoverflow.com/help/how-to-answer)以提供高质量的答案。 – thewaywewere