.net core 依赖注入IHttpContextAccessor

之前可以 

builder.Services.AddHttpContextAccessor(); 

报错了

Microsoft.AspNetCore.Authorization.Policy.PolicyEvaluator': Unable to resolve service for type 'Microsoft.AspNetCore.Http.HttpContextAccessor' while attempting to activate 

但是现在不行了

需要显示这么注入

builder.Services.AddTransient<IHttpContextAccessor,HttpContextAccessor>();