如何在ASP.NET Core2中正确配置JWT

Question

我正在尝试在我的api应用程序中应用基于JSON Web令牌的auth。问题在于，每次测试我的令牌时，我都会变得无效的令牌签名。此外，我无法在控制器中授权我的请求，我认为这可能与生成后者有关。

我发布了所有相关代码，如果有人可以帮助我，将非常感谢。源代码来自github aspnetcore2jwtauthentication

AppSettings.json

 "BearerTokens": {
  "Key": "iNivDmHLpUA223sqsfhqGbMRdRj1PVkH",
  "Issuer": "http://localhost/",
  "Audience": "http://localhost/",
  "AccessTokenExpirationMinutes": 2,
  "RefreshTokenExpirationMinutes": 60
},

startup.cs /configureservices

            services.AddAuthorization(options =>
                    {
                        options.AddPolicy(CustomRoles.Admin, policy => policy.RequireRole(CustomRoles.Admin));
                        options.AddPolicy(CustomRoles.User, policy => policy.RequireRole(CustomRoles.User));
                        options.AddPolicy(CustomRoles.Editor, policy => policy.RequireRole(CustomRoles.Editor));
                    });

            services.AddAuthentication(options =>
                {
                    options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
                    options.DefaultSignInScheme = JwtBearerDefaults.AuthenticationScheme;
                    options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
                })
                .AddCookie(cfg => 
                { 
                    cfg.SlidingExpiration = true; 
                })
                .AddJwtBearer(cfg =>
                {
                    cfg.RequireHttpsMetadata = false;
                    cfg.SaveToken = true;
                    cfg.TokenValidationParameters = new TokenValidationParameters
                    {
                        ValidIssuer = Configuration["BearerTokens:Issuer"],
                        ValidAudience = Configuration["BearerTokens:Audience"],
                        IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(Configuration["BearerTokens:Key"])),
                        ValidateIssuerSigningKey = true,
                        ValidateLifetime = true,
                        ClockSkew = TimeSpan.Zero
                    };
                    cfg.Events = new JwtBearerEvents
                    {
                        OnAuthenticationFailed = context =>
                        {
                            var logger = context.HttpContext.RequestServices.GetRequiredService<ILoggerFactory>().CreateLogger(nameof(JwtBearerEvents));
                            logger.LogError("Authentication failed.", context.Exception);
                            return Task.CompletedTask;
                        },
                        OnTokenValidated = context =>
                        {
                            var tokenValidatorService = context.HttpContext.RequestServices.GetRequiredService<ITokenValidatorService>();
                            return tokenValidatorService.ValidateAsync(context);
                        },
                        OnMessageReceived = context =>
                         {
                             return Task.CompletedTask;
                         },
                        OnChallenge = context =>
                        {
                            var logger = context.HttpContext.RequestServices.GetRequiredService<ILoggerFactory>().CreateLogger(nameof(JwtBearerEvents));
                            logger.LogError("OnChallenge error", context.Error, context.ErrorDescription);
                            return Task.CompletedTask;
                        }
                    };
                });

            services.AddCors(options =>
            {
                options.AddPolicy("CorsPolicy",
                    builder => builder
                        .WithOrigins("http://localhost:4200") //Note:  The URL must be specified without a trailing slash (/).
                        .AllowAnyMethod()
                        .AllowAnyHeader()
                        .AllowCredentials());
            });
            services.AddMvc();

**Startup.cs** / Configure

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

tokenstoreservice.cs

public async Task<(string accessToken, string refreshToken)> CreateJwtTokens(ApplicationUser user)
{
    var now = DateTimeOffset.UtcNow;
    var accessTokenExpiresDateTime = now.AddMinutes(_configuration.Value.AccessTokenExpirationMinutes);
    var refreshTokenExpiresDateTime = now.AddMinutes(_configuration.Value.RefreshTokenExpirationMinutes);
    var accessToken = await createAccessTokenAsync(user, accessTokenExpiresDateTime.UtcDateTime).ConfigureAwait(false);
    var refreshToken = Guid.NewGuid().ToString().Replace("-", "");
    await AddUserTokenAsync(user, refreshToken, accessToken, refreshTokenExpiresDateTime, accessTokenExpiresDateTime).ConfigureAwait(false); // this method is only to store the generated token in the database, irrelevent to the issue.
    await this.context.SaveChangesAsync();

    return (accessToken, refreshToken);
}
 private async Task<string> createAccessTokenAsync(ApplicationUser user, DateTime expires)
        {
            var claims = new List<Claim>
            {
                // Unique Id for all Jwt tokes
                new Claim(JwtRegisteredClaimNames.Jti, Guid.NewGuid().ToString()),
                // Issuer
                new Claim(JwtRegisteredClaimNames.Iss, _configuration.Value.Issuer),
                // Issued at
                new Claim(JwtRegisteredClaimNames.Iat, DateTime.UtcNow.ToUnixEpochDate().ToString(), ClaimValueTypes.Integer64),
                new Claim(ClaimTypes.NameIdentifier, user.Id.ToString()),
                new Claim(ClaimTypes.Name, user.UserName),
                new Claim("DisplayName", user.LastName),
                // to invalidate the cookie
                new Claim(ClaimTypes.SerialNumber, user.SecurityStamp),
                // custom data
                new Claim(ClaimTypes.UserData, user.Id.ToString())
            };
            // add roles
            var roles = await _rolesService.FindUserRolesAsync(user.Id).ConfigureAwait(false);
            foreach (var role in roles)
            {
                claims.Add(new Claim(ClaimTypes.Role, role.RoleId));
            }
            var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(_configuration.Value.Key));
            var creds = new SigningCredentials(key, SecurityAlgorithms.HmacSha256);
            var token = new JwtSecurityToken(
                issuer: _configuration.Value.Issuer,
                audience: _configuration.Value.Audience,
                claims: claims,
                notBefore: DateTime.UtcNow,
                expires: expires,
                signingCredentials: creds);
            return new JwtSecurityTokenHandler().WriteToken(token);
        }

生成的令牌样本

验证链接

Answer 1

，所以我的问题是我的ITokenValidatorService中的一个错误，这是您自定义的验证您自己的令牌的方法。

 OnTokenValidated = context =>
                        {
                            var tokenValidatorService = context.HttpContext.RequestServices.GetRequiredService<ITokenValidatorService>();
                            return tokenValidatorService.ValidateAsync(context);
                        },

上面显示的配置工作正常

，但我仍然想知道为什么JWT验证器继续返回任何已提交的令牌为无效！