Question

我有以下网络服务代码

[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1, Name = "Service1")]
[ToolboxItem(false)]

public partial class Service1 : System.Web.Services.WebService
{

    public SessionCredentials sessionHeader = new SessionCredentials();
    public class SessionCredentials{
        public Guid SessionID = Guid.Empty;
    }

    private bool IsLoggedIn
    {
        get
        {
            return (sessionHeader != null && sessionHeader.SessionID != Guid.Empty);
        }
    }

    [SoapDocumentMethod(Binding = "Service1")]
    [WebMethod]
    [SoapHeader("sessionHeader")]
    public System.Data.DataTable GetVisitList(Guid facilityID)
     {
        if (IsLoggedIn)
        {
            try
            {
                return test;
            }
            catch (Exception ex)
            {                    
                return null;
            }
        }
        return null;
    }
}

在调用此服务时，这没有问题。现在我使用以下代码将webservice迁移到WCF

[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1, Name = "Service1")]
[ToolboxItem(false)]
[ServiceContract(Namespace = "http://tempuri.org")]
 [ServiceBehavior(InstanceContextMode = InstanceContextMode.PerSession)]
public partial class Service1 : System.Web.Services.WebService
{

    public SessionCredentials sessionHeader = new SessionCredentials();
    public class SessionCredentials{
        public Guid SessionID = Guid.Empty;
    }

    private bool IsLoggedIn
    {
        get
        {
            return (sessionHeader != null && sessionHeader.SessionID != Guid.Empty);
        }
    }

    [OperationContract]
    public void SetCredentials(SessionCredentials session)
    {
        sessionHeader = session;
    }

    [SoapDocumentMethod(Binding = "Service1")]
    [WebMethod]
    [SoapHeader("sessionHeader")]
    [OperationContract]
    public System.Data.DataTable GetVisitList(Guid facilityID)
     {
        if (IsLoggedIn)
        {
            try
            {
                return test;
            }
            catch (Exception ex)
            {                    
                return null;
            }
        }
        return null;
    }
}

我也用这个

更新web.config文件

     <system.serviceModel>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
    <services>
      <!--<service name="webservice" behaviorConfiguration="returnFaults">
        <endpoint binding="basicHttpBinding" contract="webservice"></endpoint>
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"></endpoint>
      </service>-->
      <service name="webservice" behaviorConfiguration="returnFaults">
        <endpoint binding="basicHttpBinding"
          contract="Service"></endpoint>
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="returnFaults">
          <serviceDebug includeExceptionDetailInFaults="true" />
          <serviceMetadata httpGetEnabled="true" />
        </behavior>
        <behavior name="">
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="false" />
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>

不知何故，当我在客户端调用GetVisitList时，我总是得到IsLoggedIn返回false，即使我在调用此方法之前设置了sessionid。请在这里帮忙。

Answer 1

要保留sessionHeader实例，您必须将服务实例设置为Single，否则每个调用都将获得自己的实例

在服务类中使用 InstanceContextMode = InstanceContextMode.Single ：

[ServiceBehavior(InstanceContextMode=InstanceContextMode.Single]
public partial class Service1 : System.Web.Services.WebService

希望它有所帮助。

Answer 2

实际上我只创建了一个静态变量并存储了sessionid，每当我调用另一个方法时，该值仍然存在于上下文中。

将webservice迁移到wcf

2 个答案: