asp.net-core – 访问Raw Request Body

我正在尝试在ASP.net 5中访问请求的原始输入正文/流.过去,我能够将输入流的位置重置为0并将其读入内存流但是当我尝试这样做时从上下文输入流为null或抛出错误(System.NotSupportedException =>“不支持指定的方法.”).

在下面的第一个例子中,如果我将控制器方法的参数对象类型声明为动态,我可以在控制器中访问原始请求.由于各种原因,这不是一个解决方案,我需要在身份验证过滤器中访问原始请求正文.

此示例有效,但不是一个合理的解决方案：

[HttpPost("requestme")]
public string GetRequestBody([FromBody] dynamic body)
{   
    return body.ToString();
}

引发错误：

[HttpPost("requestme")]
public string GetRequestBody()
{
    var m = new MemoryStream();
    Request.Body.CopyTo(m);

    var contentLength = m.Length;

    var b = System.Text.Encoding.UTF8.GetString(m.ToArray());

    return b;
}

引发错误：

[HttpPost("requestme")]
public string GetRequestBody()
{
    Request.Body.Position = 0;
    var input = new StreamReader(Request.Body).ReadToEnd();

    return input;
}

引发错误：

[HttpPost("requestme")]
public string GetRequestBody()
{
    Request.Body.Position = 0;
    var input = new MemoryStream();
    Request.Body.CopyTo(input);

    var inputString = System.Text.Encoding.UTF8.GetString(input.ToArray());

    return inputString;
}

我需要访问我正在构建的API的每个请求的原始请求主体.

任何帮助或方向将不胜感激！

编辑：

这是我想要阅读请求正文的代码.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNet.Mvc;
using Microsoft.AspNet.Http;

namespace API.Filters
{
    public class CustomAuthorizationAttribute : Attribute,IAuthorizationFilter
    {
        public CustomAuthorizationAttribute()
        { }

        public void OnAuthorization(AuthorizationContext context)
        {
            if (context == null)
                throw new ArgumentNullException("OnAuthorization AuthorizationContext context can not be null.");
            else
            {
                if (this.AuthorizeCore(context.HttpContext) == false)
                {
                    // Do Other Stuff To Check Auth
                }
                else
                {
                    context.Result = new HttpUnauthorizedResult();
                }
            }
        }

        protected virtual bool AuthorizeCore(HttpContext httpContext)
        {
            var result = false;

            using (System.IO.MemoryStream m = new System.IO.MemoryStream())
            {
                try
                {
                    if (httpContext.Request.Body.CanSeek == true)
                        httpContext.Request.Body.Position = 0;

                    httpContext.Request.Body.CopyTo(m);

                    var bodyString = System.Text.Encoding.UTF8.GetString(m.ToArray());

                    return CheckBody(bodyString); // Initial Auth Check returns true/false <-- Not Shown In Code Here on Stack Overflow
                }
                catch (Exception ex)
                {
                    Logger.WriteLine(ex.Message);
                }
            }
                return false;
        }
    }
}

当调用标记有CustomAuthorization属性的控制器方法时,将访问此代码.

[Filters.CustomAuthorizationAuthorization]
[HttpPost]
public ActionResult Post([FromBody]UserModel Profile)
{
    // Process Profile
}

if (Request.Body.CanSeek)
{
    // Reset the position to zero to read from the beginning.
    Request.Body.Position = 0;
}

var input = new StreamReader(Request.Body).ReadToEnd();