c# - 全局应用 IgnoreAntiforgeryTokenAttribute 不会禁用 ValidateAntiForgeryToken

Question

我有一个具有这些属性的端点:

[HttpPost]
[ValidateAntiForgeryToken]
[Route("[controller]/[action]")]

当我全局应用IgnoreAntiforgeryTokenAttribute时

.AddMvc(opts =>
{
    opts.Filters.Add(typeof(CustomExceptionFilter));
    opts.Filters.Add(new IgnoreAntiforgeryTokenAttribute());
    // or
    opts.Filters.Add(typeof(IgnoreAntiforgeryTokenAttribute));
})

它没有禁用该[ValidateAntiForgeryToken]，但是当我做了类似的事情时:

[HttpPost]
[ValidateAntiForgeryToken]
[IgnoreAntiforgeryToken]
[Route("[controller]/[action]")]

然后就被禁用了，为什么？

Answer 1

对于内置的 ValidateAntiForgeryToken，您无法通过 Startup.cs 中的 IgnoreAntiforgeryTokenAttribute 禁用它。您可以引用Default order of execution 。

要解决此问题，您可以实现自己的 ValidateAntiforgeryTokenAuthorizationFilter，例如

public class CustomValidateAntiforgeryTokenAuthorizationFilter : ValidateAntiforgeryTokenAuthorizationFilter
{
    public CustomValidateAntiforgeryTokenAuthorizationFilter(IAntiforgery antiforgery, ILoggerFactory loggerFactory)
        :base(antiforgery, loggerFactory)
    {
    }
    protected override bool ShouldValidate(AuthorizationFilterContext context)
    {
        var filters = context.Filters;
        if (filters.Where(f => f.GetType() == typeof(IgnoreAntiforgeryTokenAttribute)) != null)
        {
            return false;
        }
        else
        {
            return base.ShouldValidate(context);
        }
    }
}

并通过 ValidateAntiforgeryTokenAuthorizationFilter 进行注册，例如

services.AddMvc(options => {
    options.Filters.Insert(0, new IgnoreAntiforgeryTokenAttribute());

    options.Filters.Add(typeof(WebApiExceptionFilter)); // by type
});
services.AddScoped<ValidateAntiforgeryTokenAuthorizationFilter, CustomValidateAntiforgeryTokenAuthorizationFilter > ();