ASP.NET Core6 Filter中获取Body中的参数

   [AttributeUsage(AttributeTargets.Class, Inherited = false, AllowMultiple = false)]
    public class MyFilterAttribute : Attribute, IAsyncAuthorizationFilter
    {
        private readonly IConfiguration configuration;

        public MyFilterAttribute(IConfiguration configuration)
        {
            this.configuration = configuration;
        }
        public async Task OnAuthorizationAsync(AuthorizationFilterContext context)
        {
            var request = context.HttpContext.Request;
          
　　　　　　　//开启多次读取body流
            request.EnableBuffering(); 

 　　　　　　//leaveOpen:true标识StreamReader释放时不会自动关闭流        　　
            using var sr = new StreamReader(request.Body, leaveOpen: true, encoding: Encoding.UTF8);

            var paramJson = await sr.ReadToEndAsync();

　　　　　　　//Action中可再次读取流
            request.Body.Seek(0, SeekOrigin.Begin);

      
        }
    }