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从控制台应用程序引用 WCF 服务时出现元数据错误。“从地址下载元数据时出错”。这是我的服务代码。我很感激任何帮助。

namespace WcfService1
{
    public class Service1 : IService1
    {
        public void test(string parm1, long parm2, Stream parm3)
        {

            string folder1 = @"C:\TEST";
            string fileName = Path.Combine(folder1, parm1);

            using (FileStream target = new FileStream(fileName, FileMode.Create, FileAccess.Write, FileShare.None))
            {

                    const int bufferLen = 65536;
                    byte[] buffer = new byte[bufferLen];
                    int count = 0;
                    while ((count = parm3.Read(buffer, 0, bufferLen)) > 0)
                    {
                        target.Write(buffer, 0, count);
                    }
            }

        }
    }
}

    namespace WcfService1
    {

        [ServiceContract]
        public interface IService1
        {
            [OperationContract]
            void test(string parm1, long parm2, Stream parm3);
        }
    }

这是配置:

<?xml version="1.0"?>
<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>
4

1 回答 1

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这很可能是由于您将 aSystem.IO.Stream作为参数进行了测试。根据我的经验(有人可能会过来纠正我),您有两种选择:

  1. 将请求包装在请求对象中(见下文)。
  2. 删除 param1 和 param2 并仅使用 Stream-param。

服务接口:

[ServiceContract]
public interface IService1
{

        [OperationContract]
        void test(Request request);
}

数据合约:

namespace WcfService1
{
    [DataContract]
    public class Request
    {
        [DataMember]
        public string Param1 { get; set; }
        [DataMember]
        public long Param2 { get; set; }
        [DataMember]
        public Stream Param3 { get; set; }
    }
}

您可能需要对 Stream 的子集使用 [KnownType] 进行一些额外的工作,但我对此不太确定。以上内容至少应该让您远离在添加服务引用时看到的元数据错误。

于 2012-05-01T11:32:13.590 回答