简单的注入器依赖项解析错误 - 无法加载文件或程序集System.Web.Http

时间:2015-06-10 16:12:19

标签: c# .net asp.net-web-api dependency-injection simple-injector

我正在关注洋葱架构并在DependencyResolution项目中使用simple injector。这是我的架构:

1-Core
     - Domain Classes
     - Repository Interfaces
     - Service Interfaces
2-Infrastructure
     - Data
     - Dependency Resolution
     - Repository Interfaces Implementation
     - Service Interfaces Implementation
3-WebApi
     - Web Api Project
4-WebClient
     - My AngularJs App
5-Test
     - Test Project

StartUp.cs

public partial class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            // Here I am getting error at runtime.
            SimpleInjectorInitializer.Initialize(app);
            ConfigureAuth(app);
        }
    }

SimpleInjectorInitializer.Initialize

public static Container Initialize(IAppBuilder app)
        {
            var container = GetInitializeContainer(app);

            // This is an extension method from the integration package.
            container.RegisterWebApiControllers(GlobalConfiguration.Configuration);

            container.Verify();

            GlobalConfiguration.Configuration.DependencyResolver =
                new SimpleInjectorWebApiDependencyResolver(container);

            return container;
        }

这里我添加了对从WebApi项目中获取的System.Web, System.Web.Http, System.Web.Http.Host的引用。

我将DependencyResolution项目输出的路径放到WebApi bin中,并在web.config中设置owinstart的值。

以下是我遇到的错误:

  

类型' System.IO.FileLoadException'的例外情况发生在   Infrastructure.DependencyResolution.dll但未在用户中处理   代码

     

其他信息:无法加载文件或程序集   ' System.Web.Http,Version = 4.0.0.0,Culture = neutral,   公钥= 31bf3856ad364e35'或其中一个依赖项。该   定位程序集的清单定义与程序集不匹配   参考。 (HRESULT异常:0x80131040)

修改

这是App.Config:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <configSections>
    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
  </configSections>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin.Security" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin.Security.Cookies" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Net.Http.Formatting" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.0.0.0" newVersion="5.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Http" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.2.3.0" newVersion="5.2.3.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
</configuration>

2 个答案:

答案 0 :(得分:3)

您可能在应用程序的配置文件中缺少绑定重定向。在大多数情况下,NuGet包管理器会为您正确设置绑定重定向,因为有时它无法执行此操作。

配置文件中需要的绑定重定向如下所示:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Http" publicKeyToken="31bf3856ad364e35" 
            culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-{version}" newVersion="{version}"/>
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
</configuration>

请注意,您需要替换您引用的实际版本的{version}占位符。

答案 1 :(得分:0)

您确定在使用依赖注入的整个项目中使用相同版本的SimpleInjector吗?我遇到了类似的错误,我注意到在一个项目中使用了SimpleInjectors旧版本。在我通过nuget将SimpleInjector更新为新版本后,它开始工作。