我在IIS上有两个用于开发的应用程序。第一个包含所有逻辑和与数据库通信的WCF应用程序(我们称之为服务器)。另一个引用WCF应用程序的ASP.NET MVC 3应用程序(我们称之为客户端)。
我遇到了将WCF web.config配置与Unity IoC自定义服务主机和自定义行为混合的问题。
当所有配置由Unity完成时,它会创建简单的BasicHttpBinding,但我的要求是使用证书授权使其安全,所以我需要wsHTTPBinding。
-------------为BasicHttpBinding配置------------
首先看一下WCF的常见Unity实现:
internal class UnityInstanceProvider : IInstanceProvider
{
private readonly IUnityContainer container;
private readonly Type contractType;
public UnityInstanceProvider(
[NotNull] IUnityContainer container,
[NotNull] Type contractType)
{
this.container = container;
this.contractType = contractType;
}
#region IInstanceProvider Members
public object GetInstance(InstanceContext instanceContext)
{
return GetInstance(instanceContext, null);
}
public object GetInstance(InstanceContext instanceContext, Message message)
{
return container.Resolve(contractType);
}
public void ReleaseInstance(InstanceContext instanceContext, object instance)
{
container.Teardown(instance);
}
}
internal class UnityServiceBehavior : IServiceBehavior
{
private readonly IUnityContainer container;
public UnityServiceBehavior(
[NotNull] IUnityContainer container)
{
this.container = container;
}
#region IServiceBehavior Members
public void Validate(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase)
{
}
public void AddBindingParameters(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase, Collection<ServiceEndpoint> endpoints, BindingParameterCollection bindingParameters)
{
}
public void ApplyDispatchBehavior(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase)
{
foreach (ChannelDispatcher channelDispatcher in serviceHostBase.ChannelDispatchers)
{
foreach (EndpointDispatcher endpointDispatcher in channelDispatcher.Endpoints)
{
if (endpointDispatcher.ContractName != "IMetadataExchange")
{
endpointDispatcher.DispatchRuntime.InstanceProvider = new UnityInstanceProvider(container, serviceDescription.ServiceType);
}
}
}
}
#endregion
}
public class UnityServiceHost : ServiceHost
{
private readonly IUnityContainer container;
public UnityServiceHost(
[NotNull] IUnityContainer container,
[NotNull] Type serviceType,
Uri[] baseAddresses)
: base(serviceType, baseAddresses)
{
this.container = container;
}
protected override void OnOpening()
{
base.OnOpening();
if (Description.Behaviors.Find<UnityServiceBehavior>() == null)
{
Description.Behaviors.Add(new UnityServiceBehavior(container));
}
}
}
public class UnityServiceHostFactory : ServiceHostFactory
{
protected override ServiceHost CreateServiceHost(Type serviceType, Uri[] baseAddresses)
{
IUnityContainer container = new UnityContainer();
UnityContainerConfigurator.Configure(container);
return new UnityServiceHost(container, serviceType, baseAddresses);
}
}
WCF应用程序web.config仅包含基本信息: 无端点,无服务定义。
现在假设我们的SecurityService具有定义:
<%@ ServiceHost Language="C#" Debug="true"
Service="myNamespace.SecurityService"
Factory="myNamespace.UnityServiceHostFactory" %>
现在我可以将SecurityService的服务引用添加到我的客户端。 它在客户端web.config中生成的这一步:
<basicHttpBinding>
<binding name="BasicHttpBinding_ISecurityService" closeTimeout="00:01:00"
openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
useDefaultWebProxy="true">
<readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
maxBytesPerRead="4096" maxNameTableCharCount="16384" />
<security mode="None">
<transport clientCredentialType="None" proxyCredentialType="None"
realm="" />
<message clientCredentialType="UserName" algorithmSuite="Default" />
</security>
</binding>
<endpoint address="http://localhost/wcf-app/SecurityService.svc"
binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_ISecurityService"
contract="SecurityServiceReference.ISecurityService" name="BasicHttpBinding_ISecurityService" />
此时我为Unity配置了这个:
container.RegisterType<SecurityServiceClient>(new InjectionConstructor());
在客户端应用程序中,我可以简单地使用它(我在这里没有提到构造函数注入):
var securityService = DependencyResolver.Current.GetService<SecurityServiceClient>();
这一切都有效!但如果我想使用wsHTTPBinding那就不行......
-------------为wsHTTPBinding配置------------
要启用wsHTTPBinding,我在WCF Application的web.config中配置了它。作为BasicHttpBinding的其余部分,它不包含任何有关绑定,endpoin等的信息。
但是现在对于wsHTTPBinding我添加了:
<bindings>
<wsHttpBinding>
<binding name="wsHttpEndpointBinding">
<security>
<message clientCredentialType="Certificate" />
</security>
</binding>
</wsHttpBinding>
</bindings>
<services>
<service behaviorConfiguration="ServiceBehavior" name="myNamespace.SecurityService">
<endpoint address="" binding="wsHttpBinding"
bindingConfiguration="wsHttpEndpointBinding"
name="wsHttpEndpoint" contract="myNamespace.ISecurityService">
</endpoint>
<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="ServiceBehavior">
<serviceMetadata httpGetEnabled="true" />
<serviceDebug includeExceptionDetailInFaults="false" />
<serviceCredentials>
<serviceCertificate findValue="CN=myClientCert" />
</serviceCredentials>
</behavior>
</serviceBehaviors>
</behaviors>
在向客户端应用程序添加服务引用后,它会生成:
<wsHttpBinding>
<binding name="wsHttpEndpoint" closeTimeout="00:01:00" openTimeout="00:01:00"
receiveTimeout="00:10:00" sendTimeout="00:01:00" bypassProxyOnLocal="false"
transactionFlow="false" hostNameComparisonMode="StrongWildcard"
maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text"
textEncoding="utf-8" useDefaultWebProxy="true" allowCookies="false">
<readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
maxBytesPerRead="4096" maxNameTableCharCount="16384" />
<reliableSession ordered="true" inactivityTimeout="00:10:00"
enabled="false" />
<security mode="Message">
<transport clientCredentialType="Windows" proxyCredentialType="None"
realm="" />
<message clientCredentialType="Certificate" negotiateServiceCredential="true"
algorithmSuite="Default" />
</security>
</binding>
我手动添加了behaviorConfiguration =“CertBehavior”,即:
<behaviors>
<endpointBehaviors>
<behavior name="CertBehavior">
<clientCredentials>
<clientCertificate findValue="CN=myClientCert"/>
</clientCredentials>
</behavior>
</endpointBehaviors>
现在,当我想使用Unity解决它时:
var securityService = DependencyResolver.Current.GetService<SecurityServiceClient>();
我总是空的......
当我通过以下方式创建简单的实例时,有什么好笑的?
var client = new SecurityServiceReference.SecurityServiceClient();
它运行正常...所以肯定问题与错误的wsHttpBinding配置无关,而是将web +config中的Unity + wsHttpBinding结合起来......
任何人都可以帮我解决这个问题吗?
丹尼尔
答案 0 :(得分:1)
好的,我明白了。
拉迪斯拉夫你是对的,它应该显示例外。 UnityDependencyResolver只是抓住了它。
internal class UnityDependencyResolver : IDependencyResolver
{
private readonly IUnityContainer container;
public UnityDependencyResolver([NotNull] IUnityContainer container)
{
this.container = container;
}
#region IDependencyResolver Members
public object GetService(Type serviceType)
{
try
{
return container.Resolve(serviceType);
}
catch
{
return null;
}
}
public IEnumerable<object> GetServices(Type serviceType)
{
try
{
return container.ResolveAll(serviceType);
}
catch
{
return new List<object>();
}
}
我还必须明确设置证书的证书位置:
<serviceCertificate findValue="CN=myClientCert"
storeName="My"
x509FindType="FindBySubjectDistinguishedName"
storeLocation="LocalMachine"
/>
<clientCertificate findValue="CN=myClientCert" storeName="My"
x509FindType="FindBySubjectDistinguishedName"
storeLocation="LocalMachine"
/>
现在工作正常。