如何在aspnet.core Web API中验证JWT令牌？ [英] How to validate JWT Token in aspnet.core web api?

问题描述

我创建了自定义中间件类，用于验证JWT令牌。我在configure方法中的 app.AddMvc（）之前调用此方法。 ***

I have created custom middleware class which validates the JWT token. I am calling this method before app.AddMvc() in configure method. ***

我想知道我应该添加到配置服务中以使用JWT验证Web API的哪些内容？我已经在我的Controller类中添加了[Authorize]

I would like to know what are the things that I should add to Configuration services to authenticate my web API using JWT? I have added [Authorize] in my Controller class

我是否需要调用我的中间件类，该中间件类首先在Configure方法中验证JWT令牌？或者我应该调用 App.UseAuthentication（）
我正在使用以下命令：

Do I need to call my middleware class which validates the JWT token first in Configure method? or I should call App.UseAuthentication() I am using the following order :

 app.UseAuthentication();
 app.MessageHandlerMiddleware();
 app.UseMvc();

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.net Web API实现是我的新手。

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I am new to .net web API implementation. Could you please help me out?

推荐答案

来自我的答案之一，您可以看到我们如何传递JWT令牌以及代码如何查找经典的.NET（非核心）ASP.NET WebAPI 2。

From one of my answers you can see how we pass JWT token and how the code looks for classic .NET (non-core) ASP.NET WebAPI 2.

差异不大，ASP.NET Core的代码看起来相似。

There are not many differences, the code for ASP.NET Core looks similar.

关键方面是-在启动时添加JWT配置时应用会自动处理验证。

services
    .AddAuthentication(options =>
    {
        options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
        options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
    })
    .AddJwtBearer(x =>
    {
        x.RequireHttpsMetadata = false;
        x.SaveToken = true;
        x.TokenValidationParameters = new TokenValidationParameters()
        {
            ValidateIssuerSigningKey = true,
            ValidateLifetime = true,
            IssuerSigningKey = _configuration.GetSymmetricSecurityKey(),
            ValidAudience = _configuration.GetValidAudience(),
            ValidIssuer = _configuration.GetValidIssuer()
        };
    });

（使用上面的链接查看 GetSymmetricSecurityKey ， GetValidAudience ， GetValidIssuer 扩展方法）

(use the above link to see the implementation of GetSymmetricSecurityKey, GetValidAudience, GetValidIssuer ext. methods)

也是非常重要的部分：

services.AddAuthorization(auth =>
{
    auth
    .AddPolicy(
        _configuration.GetDefaultPolicy(),
        new AuthorizationPolicyBuilder()
            .AddAuthenticationSchemes(JwtBearerDefaults.AuthenticationScheme‌​)
            .RequireAuthenticatedUser().Build()
    );
});

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