asp.net-core – 添加XML支持时无法编译ASP.NET 5 Web API

我试图弄清楚ASP.NET 5 Web API如何支持内容协商.为了支持 XML(除了默认的 JSON支持), according to another answer here on Stack Overflow,我需要从可选的NuGet包中添加该支持.

自那个答案以来,情况发生了一些变化,但我下载了Microsoft.AspNet.Mvc.Xml软件包并编辑了我的Startup.cs文件：

public void ConfigureServices(IServiceCollection services)
{
    // Add framework services.
    services.AddMvc().AddMvcOptions(options =>
    {
        options.InputFormatters.Add(new XmlSerializerInputFormatter());
    });
}

但是,这不会编译：

The type ‘InputFormatter’ is defined in an assembly that is not referenced. You must add a reference to assembly ‘Microsoft.AspNet.Mvc.Core, Version=6.0.0.0, Culture=neutral, PublicKeyToken=null’.

以下是完整的编译错误消息：

1>C:\Users\mark\Desktop\WebApplication1\src\WebApplication1\Startup.cs(33,17,33,44): DNX 4.5.1 error CS0012: The type 'InputFormatter' is defined in an assembly that is not referenced. You must add a reference to assembly 'Microsoft.AspNet.Mvc.Core, Version=6.0.0.0, Culture=neutral, PublicKeyToken=null'.
1>C:\Users\mark\Desktop\WebApplication1\src\WebApplication1\Startup.cs(33,45,33,78): DNX 4.5.1 error CS1503: Argument 1: cannot convert from 'Microsoft.AspNet.Mvc.Xml.XmlSerializerInputFormatter' to 'Microsoft.AspNet.Mvc.Formatters.IInputFormatter'
1>C:\Users\mark\Desktop\WebApplication1\src\WebApplication1\Startup.cs(33,17,33,44): DNX Core 5.0 error CS0012: The type 'InputFormatter' is defined in an assembly that is not referenced. You must add a reference to assembly 'Microsoft.AspNet.Mvc.Core, Version=6.0.0.0, Culture=neutral, PublicKeyToken=null'.
1>C:\Users\mark\Desktop\WebApplication1\src\WebApplication1\Startup.cs(33,45,33,78): DNX Core 5.0 error CS1503: Argument 1: cannot convert from 'Microsoft.AspNet.Mvc.Xml.XmlSerializerInputFormatter' to 'Microsoft.AspNet.Mvc.Formatters.IInputFormatter'

错误消息似乎相当清楚,但该项目已包含Microsoft.AspNet.Mvc.Core,虽然不是所需的版本：

Id                                  Versions         
--                                  --------         
Microsoft.AspNet.IISPlatformHandler {1.0.0-rc1-final}
Microsoft.AspNet.Mvc                {6.0.0-rc1-final}
Microsoft.AspNet.Mvc.Core           {6.0.0-rc1-final}
Microsoft.AspNet.Mvc.Xml            {6.0.0-beta5}    
Microsoft.AspNet.Server.Kestrel     {1.0.0-rc1-final}
Microsoft.AspNet.StaticFiles        {1.0.0-rc1-final}
Microsoft.Extensions.Configurati... {1.0.0-rc1-final}
Microsoft.Extensions.Configurati... {1.0.0-rc1-final}
Microsoft.Extensions.Logging        {1.0.0-rc1-final}
Microsoft.Extensions.Logging.Con... {1.0.0-rc1-final}
Microsoft.Extensions.Logging.Debug  {1.0.0-rc1-final}

在我写这篇文章时,ASP.NET 5仅在Release Candidate版本中提供,因此上述软件包是最新的软件包.

显然,Microsoft.AspNet.Mvc.Core 6.0.0.0不可用.在一个普通的.NET项目中,我试图用绑定重定向来解决这个问题,但由于这是ASP.NET 5,这显然不再是做事的方式.

如何编译我的代码？

我相信你必须使用 Microsoft.AspNet.Mvc.Formatters.Xml包.另见github上的 this issue.

另外一个热门提示：使用http://packagesearch.azurewebsites.net/搜索哪个NuGet包包含您要查找的类.