得到错误，同时运行服务

问题描述：

我已创建WCF服务，但同时运行我得到以下错误的服务：错误：得到错误，同时运行服务

Failed to add a service. Service metadata may not be accessible. Make sure your service is running and exposing metadata.
Error Details:
Warning: No code was generated.If you were trying to generate a client, this could be because the metadata documents did not contain any valid contracts or servicesor because all contracts/services were discovered to exist in /reference assemblies. Verify that you passed all the metadata documents to the tool.Warning: If you would like to generate data contracts from schemas make sure to use the /dataContractOnly option.

代码：

namespace WCFTest 
{ 
    [ServiceContract] 
    public class EmployeeDetails 
    { 
     [OperationContract] 
     public List<Employee> GetDetails() 
     { 
      List<Employee> emp = new List<Employee>() 
      { 
       new Employee(){Fname="AA",Lname="BB",EmpId=1,Desg="A"}, 
       new Employee(){Fname="CC",Lname="DD",EmpId=1,Desg="B"}, 
       new Employee(){Fname="EE",Lname="FF",EmpId=1,Desg="C"}, 
       new Employee(){Fname="GG",Lname="HH",EmpId=1,Desg="D"}, 
       new Employee(){Fname="II",Lname="JJ",EmpId=1,Desg="A"}, 
       new Employee(){Fname="KK",Lname="LL",EmpId=1,Desg="B"} 
      }; 
      return emp; 
     } 
    } 

    // Use a data contract as illustrated in the sample below to add composite types to service operations. 
    [DataContract] 
    [KnownType(typeof(Employee))] 
    public class Person 
    { 
     [DataMember] 
     public string Fname { get; set; } 
     [DataMember] 
     public string Lname { get; set; } 
    } 

    [DataContract] 
    public class Employee : Person 
    { 
     [DataMember] 
     public int EmpId { get; set; } 
     [DataMember] 
     public string Desg { get; set; } 
    } 
} 

namespace WCFTest 
{ 
    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the class name "Service1" in code, svc and config file together. 
    public class Service1 
    { 
     public List<Employee> GetData(int value) 
     { 
      EmployeeDetails ed = new EmployeeDetails(); 
      return ed.GetDetails(); 
     } 
    } 
}

但是我能看到的元数据暴露在web.config中。

Web.config文件：

<configuration> 
    <system.web> 
    <compilation debug="true" targetFramework="4.0" /> 
    </system.web> 
    <system.serviceModel> 
    <behaviors> 
     <serviceBehaviors> 
     <behavior> 
      <!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment --> 
      <serviceMetadata httpGetEnabled="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> 
    </behaviors> 
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" /> 
    </system.serviceModel> 
<system.webServer> 
    <modules runAllManagedModulesForAllRequests="true"/> 
    </system.webServer> 
</configuration>

任何线索我要去的地方错了吗？

编辑：我认为错误背后的原因是我正在使用一个类作为服务合同，现在当我将其更改为一个接口，事情按预期工作，不知道为什么我得到错误，如果我指定该类作为服务合同。

我没有在您的web.config中看到任何节点.....另外：你是如何尝试从服务创建代理：在Visual Studio中添加服务引用或运行svcutil在命令行？ – 2010-10-02 16:47:05

不，我不想创建任何代理，我所做的是 - 创建new-> project> WCF应用程序，然后添加此代码，并尝试运行WCF sln。 – Wondering 2010-10-02 16:51:06

默认的WCF应用程序以这种方式工作（我的意思是没有在C＃或web.config中更改anu代码的缺省值） – Wondering 2010-10-02 16:52:01

答

我没有在您的配置中看到任何<services>节点 - 您根本没有配置服务 - 因此没有任何连接。

你需要扩展你的配置，包括这样的事情：

<configuration> 
    <system.serviceModel> 

    <services> 
     <service name="WCFTest.EmployeeDetails"> 
     <endpoint name="Default" 
        address="/default" 
        binding="basicHttpBinding" bindingConfiguration="" 
        contract="WCFTest.EmployeeDetails" /> 
     <endpoint kind="mexEndpoint" address="/mex" /> 
     </service> 
    </services> 

    </system.serviceModel> 
</configuration>

现在，你有一个服务和一个元数据端点的服务，现在你的WCF测试客户端应该能够找到的东西连接到....

得到错误，同时运行服务

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