在点网核心MVC中使用Jwt进行简单身份验证 [英] Simple Authentication using Jwt in dot net core MVC

问题描述

我正在尝试在我的点网核心应用程序中添加JWT验证.我已经按照此链接理解了JWT，并能够通过给出一些值来生成令牌.

I'm trying to add JWT validation in my dot net core application. I've followed this link to understand JWT and able to generate a token by givings some values like this.

var token = new JwtSecurityToken(
  issuer: issuer,
  audience: aud,
  claims: claims,
  expires: expTime,
  signingCredentials: creds
);

并遵循此答案，我还添加了JwtBearerAuthentication middleware in my app by adding app.UseJwtBearerAuthentication(new JwtBearerOptions { /* options */ }) to Startup.Configure() method

and to follow this answer, I've also added JwtBearerAuthentication middleware in my app by adding app.UseJwtBearerAuthentication(new JwtBearerOptions { /* options */ }) to Startup.Configure() method.

现在，我被卡住了如何在HTTP标头中传递此令牌?我在登录时生成了此令牌，但是接下来呢?我怎么知道JWT已添加并且工作正常?

Now I'm stuck how could I pass this token inside HTTP header? I'm generating this token on Login but whats next? How could I get to know that JWT is added and working fine??

任何帮助将不胜感激.

推荐答案

这是ASP.NET Core中用于承载令牌身份验证的可运行示例.
如何在ASP.NET Core中实现承载令牌身份验证和授权

This is a runnable sample for bearer token authentication in ASP.NET Core.
How to achieve a bearer token authentication and authorization in ASP.NET Core

在后端，您可以按照以下代码生成令牌:

At back end, you can generate the token following this code:

[Route("api/[controller]")]
public class TokenAuthController : Controller
{
    [HttpPost]
    public string GetAuthToken(User user)
    {
        var existUser = UserStorage.Users.FirstOrDefault(u => u.Username == user.Username && u.Password == user.Password);

        if (existUser != null)
        {
            var requestAt = DateTime.Now;
            var expiresIn = requestAt + TokenAuthOption.ExpiresSpan;
            var token = GenerateToken(existUser, expiresIn);

            return JsonConvert.SerializeObject(new {
                stateCode = 1,
                requertAt = requestAt,
                expiresIn = TokenAuthOption.ExpiresSpan.TotalSeconds,
                accessToken = token
            });
        }
        else
        {
            return JsonConvert.SerializeObject(new { stateCode = -1, errors = "Username or password is invalid" });
        }
    }

    private string GenerateToken(User user, DateTime expires)
    {
        var handler = new JwtSecurityTokenHandler();

        ClaimsIdentity identity = new ClaimsIdentity(
            new GenericIdentity(user.Username, "TokenAuth"),
            new[] {
                new Claim("ID", user.ID.ToString())
            }
        );

        var securityToken = handler.CreateToken(new SecurityTokenDescriptor
        {
            Issuer = TokenAuthOption.Issuer,
            Audience = TokenAuthOption.Audience,
            SigningCredentials = TokenAuthOption.SigningCredentials,
            Subject = identity,
            Expires = expires
        });
        return handler.WriteToken(securityToken);
    }
}

在Startup.cs/ConfigureServices方法中

In Startup.cs/ConfigureServices method

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

并将此代码添加到Configure方法中

And add this code in Configure method

app.UseJwtBearerAuthentication(new JwtBearerOptions {
    TokenValidationParameters = new TokenValidationParameters {
        IssuerSigningKey = TokenAuthOption.Key,
        ValidAudience = TokenAuthOption.Audience,
        ValidIssuer = TokenAuthOption.Issuer,
        ValidateIssuerSigningKey = true,
        ValidateLifetime = true,
        ClockSkew = TimeSpan.FromMinutes(0)
    }
});

在前端，您只需将令牌添加到标头中，如下所示:

At front end, you just add the token to header like this:

$.ajaxSetup({
    headers: { "Authorization": "Bearer " + accessToken }
});

或

$.ajax("http://somedomain/somepath/somepage",{
    headers:{ "Authorization": "Bearer " + accessToken },
    /*some else parameter for ajax, see more you can review the Jquery API*/
});

这篇关于在点网核心MVC中使用Jwt进行简单身份验证的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！