Question

尝试通过XML配置设置Unity我遇到了这个异常

The type name or alias ServiceHost could not be resolved. Please check your configuration file and verify this type name.

试着评论一下，我得到了下一个然后的下一个相同的异常，所以问题必须出现在我的设置中。

<unity>
    <typeAliases>

      <!-- Lifetime manager types -->
      <typeAlias alias="singleton"
           type="Microsoft.Practices.Unity.ContainerControlledLifetimeManager,
             Microsoft.Practices.Unity" />
      <typeAlias alias="external"
           type="Microsoft.Practices.Unity.ExternallyControlledLifetimeManager,
             Microsoft.Practices.Unity" />
      <typeAlias alias="perThread"
           type="Microsoft.Practices.Unity.PerThreadLifetimeManager,
             Microsoft.Practices.Unity" />

      <!-- User-defined type aliases -->
      <typeAlias alias="ServiceHost"
                 type="System.ServiceModel.ServiceHost, System.ServiceModel" />
      <typeAlias alias="UnityServiceHost"
                 type="MyProjectServiceLibrary.Hosting.UnityServiceHost" />

      <typeAlias alias="IServiceBehavior"
                 type="System.ServiceModel.Descriptions.IServiceBehavior, System.ServiceModel" />
      <typeAlias alias="UnityServiceBehavior"
                 type="MyProjectServiceLibrary.Hosting.UnityServiceBehavior, MyProjectServiceLibrary" />

      <typeAlias alias="IInstanceProvider"
                 type="System.ServiceModel.Dispatcher.IInstanceProvider, System.ServiceModel" />
      <typeAlias alias="UnityInstanceProvider"
                 type="MyProjectServiceLibrary.Hosting.UnityInstanceProvider, MyProjectServiceLibrary" />

      <typeAlias alias="MyProjectService"
                 type="MyProjectServiceLibrary.Service.MyProjectService, MyProjectServiceLibrary" />

      <typeAlias alias="IRepositoryFactory"
                 type="MyProjectDataModelLibrary.Repository.IRepositoryFactory, MyProjectDataModelLibrary" />
      <typeAlias alias="RepositoryFactory"
                 type="MyProjectDataModelLibrary.Repository.RepositoryFactory, MyProjectDataModelLibrary" />

      <typeAlias alias="IDbContext"
                 type="MyProjectDataModelLibrary.DataContext.IDbContext, MyProjectDataModelLibrary" />
      <typeAlias alias="MyProjectDatabase"
                 type="MyProjectDataModelLibrary.DataContext.MyProjectDatabase, MyProjectDataModelLibrary" />

      <typeAlias alias="IRepositoryOfT"
                 type="MyProjectDataModelLibrary.Repository.IRepository`1, MyProjectDataModelLibrary" />
      <typeAlias alias="EntityRepositoryOfT"
                 type="MyProjectDataModelLibrary.Repository.EntityRepository`1, MyProjectDataModelLibrary" />

    </typeAliases>

    <containers>

      <container>
        <types>

          <type type="MyProjectService" />

          <type type="ServiceHost"
                mapTo="UnityServiceHost" />

          <type type="IServiceBehavior"
                mapTo="UnityServiceBehavior" />

          <type type="IInstanceProvider"
                mapTo="UnityInstanceProvider" />

          <type type="IRepositoryFactory"
                mapTo="RepositoryFactory" />

          <type type="IDbContext"
                mapTo="MyProjectDatabase" />

          <type type="IRepositoryOfT"
                mapTo="EntityRepositoryOfT" />

        </types>
      </container>

    </containers>
  </unity>

我试过四处看看我做错了什么。我怀疑这是完全合格的名字，虽然我不能确定，因为我之前没有真正使用过。

IUnityContainer container = new UnityContainer();
container.RegisterInstance<IUnityContainer>(container);
UnityConfigurationSection section = (UnityConfigurationSection)ConfigurationManager.GetSection("unity");
section.Configure(container);

此处的最后一行引发了异常。

Answer 1

由于您正在引用系统类型，因此最有可能尝试从GAC中提取这些类型。在这种情况下，您需要使用完全限定的程序集名称，包括版本号，区域性和公钥标记。像这样：

<typeAlias alias="ServiceHost"
  type="System.ServiceModel.ServiceHost, System.ServiceModel,
  Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089, 
  processorArchitecture=MSIL" />

当然，您需要查找适用于您正在使用的.NET版本的＃和公钥标记。

无法从unity配置文件中解析类型

1 个答案: