找不到类型或命名空间名称“DefaultHttpRequest" [英] The type or namespace name 'DefaultHttpRequest' could not be found

问题描述

我刚刚从 2.1 升级到 .net core 3.1.

I have just upgraded to .net core 3.1 from 2.1.

我更新了所有软件包，但出现以下我无法解决的错误:

I updated all the packages but i am getting the below errors which I am not able to resolve:

The type or namespace name 'DefaultHttpRequest' could not be found 
The type or namespace name 'Internal' does not exist in the namespace 'Microsoft.AspNetCore.Http'

我一直在上面使用:

using Microsoft.AspNetCore.Http.**Internal**;

 private static async Task<UserInfo>
            Uplpoad(byte[] buffer, FormFileCollection formFileCollection,
                **DefaultHttpRequest defaultHttpRequest,**
                Dictionary<string, StringValues> dictionary)
  {
   //some code
    defaultHttpRequest.Form = new FormCollection(dictionary, formFileCollection);
   //some code

   }

  public async void  Test1Up()
  { 
    //some code
    var defaultHttpContext = new DefaultHttpContext(featureCollection);
    var defaultHttpRequest = new **DefaultHttpRequest**(defaultHttpContext);
    //some code
  }

查看**中突出显示的行中的错误

See the error in the highlighted lines in **

我可以在 3.1 的重大更改中看到对 DefaultHttpContext 的更改，但我没有找到与 DefaultHttpRequest 相关的任何内容，这给我带来了上述错误.

I can see in the breaking changes for 3.1 there are changes to DefaultHttpContext but I didn't find anything related to DefaultHttpRequest which is giving me errors as above.

推荐答案

DefaultHttpRequest 已从 public 更改为 internal 作为 ASP 的一部分.NET Core 3.0 版本，这意味着它不再可用.在您显示的代码中，似乎没有任何理由创建或依赖 DefaultHttpRequest.

DefaultHttpRequest was changed from public to internal as part of the ASP.NET Core 3.0 release, which means it's no longer available. In the code you've shown, there doesn't appear to be any reason to create or depend on DefaultHttpRequest.

我建议将代码更改为如下所示:

I recommend changing the code to something like this:

private static async Task<UserInfo> Upload(byte[] buffer, FormFileCollection formFileCollection,
    HttpRequest httpRequest, Dictionary<string, StringValues> dictionary)
{
    // ...

    httpRequest.Form = new FormCollection(dictionary, formFileCollection);

    // Update all other references to defaultHttpRequest

    // ...
}

public async void Test1Up() // async void is generally bad, but that's a separate issue
{ 
    // ...

    var httpContext = new DefaultHttpContext(featureCollection);
    var httpRequest = httpContext.Request;

    // Update all other references to defaultHttpContext and defaultHttpRequest

    // ...
}

不要传递DefaultHttpRequest，而是使用抽象的HttpRequest.在 Upload 中设置的 Form 属性是 HttpRequest 的一部分，因此应该按原样工作.也无需创建DefaultHttpRequest 的实例:DefaultHttpContext 构造函数为您完成此操作并通过其Request 属性.

Rather than passing around DefaultHttpRequest, use the abstract HttpRequest. The Form property being set in Upload is part of HttpRequest, so that should work as-is. There's also no need to create an instance of DefaultHttpRequest: the DefaultHttpContext constructor does this for you and provides it via its Request property.

这是官方公告和相关的链接问题.

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