在ASP.NET Core中访问当前的HttpContext [英] Access the current HttpContext in ASP.NET Core

问题描述

我需要以静态方法或实用程序服务访问当前的HttpContext.

I need to access current HttpContext in a static method or a utility service.

使用经典的ASP.NET MVC和System.Web，我将只使用HttpContext.Current静态访问上下文.但是如何在ASP.NET Core中做到这一点?

With classic ASP.NET MVC and System.Web, I would just use HttpContext.Current to access the context statically. But how do I do this in ASP.NET Core?

推荐答案

HttpContext.Current在ASP.NET Core中不再存在，但是有一个新的

HttpContext.Current doesn't exist anymore in ASP.NET Core but there's a new IHttpContextAccessor that you can inject in your dependencies and use to retrieve the current HttpContext:

public class MyComponent : IMyComponent
{
    private readonly IHttpContextAccessor _contextAccessor;

    public MyComponent(IHttpContextAccessor contextAccessor)
    {
        _contextAccessor = contextAccessor;
    }

    public string GetDataFromSession()
    {
        return _contextAccessor.HttpContext.Session.GetString(*KEY*);
    }
}

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