，找不到Net core 3.1 AddAuthorization方法 [英] ,net core 3.1 AddAuthorization method not found

问题描述

我正在从.Net Core 2.2迁移到3.1，但在运行时遇到此错误

System.Missing方法异常：‘未找到方法：’Microsoft.Extensions.DependencyInjection.IServiceCollection Microsoft.Extensions.DependencyInjection.AuthorizationServiceCollectionExtensions.AddAuthorization(Microsoft.Extensions.DependencyInjection.IServiceCollection，System.Action`1<；Microsoft.AspNetCore.Authorization.AuthorizationOptions>；)‘.’

我确保包含所有需要的Nuget库

<ItemGroup>
    <PackageReference Include="Microsoft.AspNetCore.Authorization" Version="3.1.12" />
    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="6.0.0-preview.2.21154.6" />
    <PackageReference Include="Signed.IdentityModel.AspNetCore.OAuth2Introspection" Version="3.5.0" /> 
    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
    <PackageReference Include="System.Text.Encoding.CodePages" Version="5.0.0" /> 
    <PackageReference Include="Microsoft.AspNetCore.SpaServices.Extensions" Version="2.0.0" />
</ItemGroup>

我甚至尝试添加(不确定是否需要)

和启动时

 services.AddMvc(options => {
                options.AddOAuth2AuthorizationPolicy(); 
            });
services.AddAuthorization();

不确定缺少什么

推荐答案

添加对Microsoft.AspNetCore.Authorization.Policy的引用或改用AddAuthorizationCore。更改在ASP.NET Core breaking changes for versions 3.0 and 3.1 list中描述，引号：

过去驻留在 Microsoft.AspNetCore.Authorization已重命名为 AddAuthorizationCore。旧的AddAuthorization方法仍然存在， 但它们位于Microsoft.AspNetCore.Authorization.Policy程序集中 而是。

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