WCF web服务找不到端点元素

Question

使用本教程创建一个WCF Restful Service并将其与SQL server DB连接以获取数据并创建服务并运行，但问题是无法找到端点元素这是我的代码 EventDataContract

    using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.Web;
namespace WCFEventsSchedule
{
    [DataContract]
    public class EventDataContract
    {
        [DataMember]
        public int EventID { get; set; }
        [DataMember]
        public string Text { get; set; }
        [DataMember]
        public DateTime Start_Date { get; set; }
        [DataMember]
        public DateTime End_Date { get; set; }
        [DataMember]
        public int Room_Id { get; set; }
        [DataMember]
        public int User_Id { get; set; }
    }
}

IEventService

    using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.ServiceModel.Web;
using System.Text;
namespace WCFEventsSchedule
{
    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the interface name "IEventService" in both code and config file together.
    [ServiceContract]
    public interface IEventService
    {
        [OperationContract]
        [WebInvoke(Method = "GET", RequestFormat = WebMessageFormat.Json,
            ResponseFormat = WebMessageFormat.Json, UriTemplate = "/GetAllEvents/")]
        List<EventDataContract> GetAllEvent();
        [OperationContract]
        [WebGet(RequestFormat = WebMessageFormat.Json,
           ResponseFormat = WebMessageFormat.Json,
           UriTemplate = "/EventDetails/{EventID}")]
        EventDataContract EventDetails(string EventID);
    }
}

EventService.svc

    using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;
using WCFEventsSchedule.Model;
namespace WCFEventsSchedule
{
    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the class name "EventService" in code, svc and config file together.
    // NOTE: In order to launch WCF Test Client for testing this service, please select EventService.svc or EventService.svc.cs at the Solution Explorer and start debugging.
    public class EventService : IEventService
    {
        SchedulerEntities se;
        public EventService()  
        {
            se = new SchedulerEntities();  
        }   
        public List<EventDataContract> GetAllEvent()
        {
            var query = (from a in se.Events
                         select a).Distinct();
            List<EventDataContract> EventList = new List<EventDataContract>();
            query.ToList().ForEach(x =>
            {
                EventList.Add(new EventDataContract
                {
                    EventID = x.id,
                    Text = x.text,
                    Start_Date = x.start_date,
                    End_Date = x.end_date,
                    Room_Id = (int) x.room_id,
                    User_Id = (int) x.user_id,
                });
            });
            return EventList;   
        }
        public EventDataContract EventDetails(string EventID)
        {
            EventDataContract even = new EventDataContract();
            try
            {
                var query = (from a in se.Events
                             where a.id.Equals(EventID)
                             select a).Distinct().FirstOrDefault();
                even.EventID = query.id;
                even.Text = query.text;
                even.Start_Date = query.start_date;
                even.End_Date = query.end_date;
                even.Room_Id = (int) query.room_id;
                even.User_Id = (int) query.user_id;  
            }
            catch (Exception ex)
            {
                throw new FaultException<string>(ex.Message);
            }
            return even;   
        }
    }
}

web . config

    <?xml version="1.0" encoding="utf-8"?>
<configuration>
  <configSections>
    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
  </configSections>
  <appSettings>
    <add key="aspnet:UseTaskFriendlySynchronizationContext" value="true" />
  </appSettings>
  <system.web>
    <compilation debug="true" targetFramework="4.5" />
    <httpRuntime targetFramework="4.5" />
  </system.web>
  <system.serviceModel>
    <services>
      <service name="WCFEventsSchedule.EventService" behaviorConfiguration="serviceBehavior" >
        <endpoint address=""
                  binding="webHttpBinding"
                  contract="WCFEventsSchedule.IEventService"
                  behaviorConfiguration="web">
        </endpoint>
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="serviceBehavior">
          <!-- To avoid disclosing metadata information, set the values below to false before deployment -->
          <serviceMetadata httpGetEnabled="true" httpsGetEnabled="true" />
          <!-- To receive exception details in faults for debugging purposes, set the value below to true.  Set to false before deployment to avoid disclosing exception information -->
          <serviceDebug includeExceptionDetailInFaults="false" />
        </behavior>
      </serviceBehaviors>
      <endpointBehaviors>
        <behavior name="web">
          <webHttp/>
        </behavior>
      </endpointBehaviors>
    </behaviors>
    <protocolMapping>
      <add binding="webHttpBinding" scheme="https" />
    </protocolMapping>
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
  </system.serviceModel>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true" />
    <!--
        To browse web app root directory during debugging, set the value below to true.
        Set to false before deployment to avoid disclosing web app folder information.
      -->
    <directoryBrowse enabled="true" />
  </system.webServer>
  <connectionStrings>
    <add name="SchedulerEntities" connectionString="metadata=res://*/Model.EventsModel.csdl|res://*/Model.EventsModel.ssdl|res://*/Model.EventsModel.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=(LocalDB)v11.0;attachdbfilename=|DataDirectory|Scheduler.mdf;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework&quot;" providerName="System.Data.EntityClient" />
  </connectionStrings>
  <entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
      <parameters>
        <parameter value="mssqllocaldb" />
      </parameters>
    </defaultConnectionFactory>
    <providers>
      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
    </providers>
  </entityFramework>
</configuration>

My table Events

    CREATE TABLE [dbo].[Events] (
    [id]         INT      IDENTITY (1, 1) NOT NULL,
    [text]       TEXT     COLLATE Cyrillic_General_CI_AS NULL,
    [start_date] DATETIME NOT NULL,
    [end_date]   DATETIME NOT NULL,
    [room_id]    INT      NULL,
    [user_id]    INT      NULL,
    CONSTRAINT [PK_Events] PRIMARY KEY CLUSTERED ([id] ASC)
);

，稍后我将使用WCF显示Windows窗体应用程序上的数据。

更新错误后添加[ServiceBehavior(IncludeExceptionDetailInFaults = true)]

    Le serveur a rencontré une erreur lors du traitement de la demande. Le message d'exception est 'Un objet qui autorise la valeur Null doit posséder une valeur.'. Pour plus d'informations, consultez les journaux du serveur. La trace de la pile d'exception est :
à System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource) à System.Nullable`1.get_Value() à WCFEventsSchedule.EventService.<>c__DisplayClass2.<GetAllEvent>b__1(Events x) dans c:Usersjuste 3al fazaDesktopScheduler.MVC5WCFEventsScheduleEventService.svc.cs:ligne 31 à System.Collections.Generic.List`1.ForEach(Action`1 action) à WCFEventsSchedule.EventService.GetAllEvent() dans c:Usersjuste 3al fazaDesktopScheduler.MVC5WCFEventsScheduleEventService.svc.cs:ligne 29 à SyncInvokeGetAllEvent(Object , Object[] , Object[] ) à System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs) à System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc) à System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc) à System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage41(MessageRpc& rpc) à System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc& rpc) à System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc& rpc) à System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3(MessageRpc& rpc) à System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2(MessageRpc& rpc) à System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage11(MessageRpc& rpc) à System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage1(MessageRpc& rpc) à System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)

Answer 1

每当WCF服务出现问题时，这个问题就会出现。因此，要查看有关该问题的更多详细信息，您需要在servicedebug标签中将includeexceptiondetailInfaults属性设置为true。

编辑

对于那些不懂法语的人来说，这里是错误翻译成

的内容

服务器在处理请求时遇到错误。的异常消息是'一个对象nullable应该有一个值'。． 有关更多信息，请查看服务器日志。的痕迹异常堆栈为:

System.ThrowHelper。抛出winvalidoperationexception(例外资源)资源)到System.Nullable1。get_Value () toWCFEventsSchedule。EventService。<> c_displayclass2;& lt;GetAllEvent>b__1 (Events x)

这意味着在你的GetAllEvent()你试图分配空值。如果在这一点上放置调试器，您可能会发现哪一行抛出异常

(提示:主要是那些不应该是NULL的值)

Answer 2

我不确定问题是什么，但我怀疑你的web.config文件有问题。

请阅读本教程，以获得更清晰的演练。

它清楚地显示了您需要更改的web.config的两个部分，以使其正常工作