BreezeControllerAttribute异常：无法加载文件或程序集“System.Net.Http [英] BreezeControllerAttribute exception: Could not load file or assembly 'System.Net.Http

问题描述

当我打电话给API则显示错误：

When I make a call to an API an error is displayed:

无法加载文件或程序集System.Net.Http，版本= 2.0.0.0，文化=中性公钥= b03f5f7f11d50a3a'或其依赖项之一。该系统找不到指定的文件。

"Could not load file or assembly 'System.Net.Http, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.",

我有一个基本的控制器为我的API

Code

I have a base controller for my APIs

[BreezeNHController]
public class baseApiController<T> : ApiController
    where T : class, IEntity
{
    public IRepository<T> Repositorio { get; private set; }

    [HttpGet, BreezeNHQueryable(AllowedQueryOptions = AllowedQueryOptions.All, PageSize = 20)]
    public IQueryable<T> Get()
    {
        return Repositorio.All();
    }

    // ..
}

和实施

[BreezeController, Authorize]
public class usuariosController : baseApiController<User>
{
    public usuariosController(IUserRepository repositorio)
        : base(repositorio)
    { }
}

！网址：GET / API / USUARIOS 抛出一个exeption

Url: GET /api/usuarios throw a exeption!

但我的DDL是在参考：

But my DDL is in reference:

{
    "Message": "An error has occurred.",
    "ExceptionMessage": "The type initializer for 'Breeze.WebApi.BreezeControllerAttribute' threw an exception.",
    "ExceptionType": "System.TypeInitializationException",
    "StackTrace": "   at Breeze.WebApi.BreezeControllerAttribute.Initialize(HttpControllerSettings settings, HttpControllerDescriptor descriptor)\r\n   at System.Web.Http.Controllers.HttpControllerDescriptor.InvokeAttributesOnControllerType(HttpControllerDescriptor controllerDescriptor, Type type)\r\n   at System.Web.Http.Controllers.HttpControllerDescriptor.InvokeAttributesOnControllerType(HttpControllerDescriptor controllerDescriptor, Type type)\r\n   at System.Web.Http.Controllers.HttpControllerDescriptor..ctor(HttpConfiguration configuration, String controllerName, Type controllerType)\r\n   at System.Web.Http.Dispatcher.DefaultHttpControllerSelector.InitializeControllerInfoCache()\r\n   at System.Lazy`1.CreateValue()\r\n   at System.Lazy`1.LazyInitValue()\r\n   at System.Lazy`1.get_Value()\r\n   at System.Web.Http.Dispatcher.DefaultHttpControllerSelector.SelectController(HttpRequestMessage request)\r\n   at System.Web.Http.Dispatcher.HttpControllerDispatcher.SendAsyncCore(HttpRequestMessage request, CancellationToken cancellationToken)\r\n   at System.Web.Http.Dispatcher.HttpControllerDispatcher.<SendAsync>d__0.MoveNext()",
    "InnerException": {
        "Message": "An error has occurred.",
        "ExceptionMessage": "Could not load file or assembly 'System.Net.Http, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.",
        "ExceptionType": "System.IO.FileNotFoundException",
        "StackTrace": "   at Breeze.WebApi.JsonFormatter.Create()\r\n   at Breeze.WebApi.BreezeControllerAttribute..cctor()"
    }
}

尝试

在包管理器控制台，运行命令添加-BindingRedirect 。

<dependentAssembly>
    <assemblyIdentity name="System.Net.Http" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
</dependentAssembly>

发现了奇怪的是没有指向4.0。它可以是问题吗？如果是的话，为什么添加-BindingRedirect 没有工作？

推荐答案

这是最肯定的绑定重定向问题。我建议你​​复制整个＆LT; assemblyBinding的xmlns =瓮：架构 - 微软COM：asm.v1＆GT; 从一个新的ASP.NET MVC 4项目内容你的web.config文件。这发生在我身上偶尔刷新搞砸绑定修复该问题。

This is most definitely a binding redirect issue. I advice you copy the entire <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1"> content from a fresh ASP.NET MVC 4 project to your web.config file. This happens to me occasionally and refreshing the messed up bindings fixes the issue.

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