Question

当我从控制台应用程序引用WCF服务时，我收到元数据错误。 “从地址下载元数据时出错”。这是我的服务代码。我感谢任何帮助。

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Config：

<?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>

Answer 1

这很可能是因为您将System.IO.Stream作为参数进行测试。根据我的经验（有人可能会来这里纠正我）你有两个选择：

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

服务接口：

[ServiceContract]
public interface IService1
{

        [OperationContract]
        void test(Request request);
}

DataContract：

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

对于Stream的子集使用[KnownType]可能还需要一些额外的工作，但我对此非常不确定。上面的内容应该至少让您远离添加服务引用时看到的MetaData错误。

wcf与元数据的错误

1 个答案: