说明：这不是第一个步骤，后面再补一下前面的文档

实现接口 IProfileService

    /// <summary>
    /// 通过此实现可以拓展相关的用户Profile信息
    /// </summary>
    public class PerryProfileService : IProfileService
    {
        public async Task GetProfileDataAsync(ProfileDataRequestContext context)
        {
            await Task.CompletedTask;
        }

        public async Task IsActiveAsync(IsActiveContext context)
        {
            await Task.CompletedTask;
        }
    }

实现接口 IResourceOwnerPasswordValidator

    /// <summary>
    /// 通过此实现可以在返回token前自定义校验用户账号和密码
    /// 这里注入了自己实现的ApplicationUserService
    /// </summary>
    public class PerryResourceOwnerPasswordValidator : IResourceOwnerPasswordValidator
    {
        public IApplicationUserService UserService { get; }
        public PerryResourceOwnerPasswordValidator(IApplicationUserService userService)
        {
            UserService = userService;
        }

        public async Task ValidateAsync(ResourceOwnerPasswordValidationContext context)
        {
            var validateResult = await UserService.ValidateCredentialsAsync(context.UserName, context.Password);

            if (validateResult.Result)
            {
                var user = await UserService.GetByUserNameAsync(context.UserName);
                context.Result = new GrantValidationResult(
                    subject:user.Id,
                    authenticationMethod:"",
                    claims: new List<Claim>()
                    );
            }
        }
    }

将上述实现类替换到IdentityServer

• Startup.cs/ConfigureServices里配置注入信息

            services.AddTransient<IResourceOwnerPasswordValidator, PerryResourceOwnerPasswordValidator>();
            services.AddTransient<IProfileService, PerryProfileService>();

• 使用自己实现的类

           var builder = services.AddIdentityServer()
                // 其他配置
                // 。。。
                // 其他配置
                .AddResourceOwnerValidator<PerryResourceOwnerPasswordValidator>()
                .AddProfileService<PerryProfileService>();

---

经过上述操作后，访问 https://localhost:5001/connect/token 即可进入到自己的校验并返回有效的Token

• 获取Token测试
  

{
    "access_token": "eyJhbGciOiJSUzI1NiIsImtpZCI6IkFDMjg3MjVCOTRCOTU4MDI1RDdEOUUwNjNCNjVGN0NFIiwidHlwIjoiYXQrand0In0.eyJuYmYiOjE2MzI1NTEyMTgsImV4cCI6MTYzMjU1NDgxOCwiaXNzIjoiaHR0cHM6Ly9sb2NhbGhvc3Q6NTAwMSIsImF1ZCI6Imh0dHBzOi8vbG9jYWxob3N0OjUwMDEvcmVzb3VyY2VzIiwiY2xpZW50X2lkIjoid2ViIiwic3ViIjoiYTg4ZDUxY2ItMGU4MC00MTAwLThmYjgtMTM2MzI0ODRjYTE4IiwiYXV0aF90aW1lIjoxNjMyNTUxMjE4LCJpZHAiOiJsb2NhbCIsImp0aSI6Ijk5MjM4QjIyMTA0NDNFMUU3Njc0RjdGRDVFNTI1Q0I5IiwiaWF0IjoxNjMyNTUxMjE4LCJzY29wZSI6WyJvcGVuaWQiLCJwcm9maWxlIiwib2ZmbGluZV9hY2Nlc3MiXSwiYW1yIjpbIiJdfQ.hssfoHyF8zZsdgDqzDzcx4fYaEl2q6FETdA9UWxUgxuFrZhSqq6hJU5ENnWFIBmdcQfZMVgwULX4bGoyymT5glljH1I7bdIGQpTuUYEC8BHyxCjL4yrFziPTQ5pnPCk0BdeOL0KsIdoaQUDUh4wS_AGNdwT9svKw6ae3TgciHfY2XTTZRXxEvbZBCV1KwVFgO2S040_2F7D68ZRAkF0Y2Xz27iihXcnVNQ2_j8kRqfgEbLuQ2HArJiC6FUOHRLnu8EvwGS4P6ckaVbiiKREduB_B_qq5LVz2SB0L4Y7dsCNdLUvTtoE0Onm5i5fAOkp46DflXCYhzn50hX6y4JAyzw",
    "expires_in": 3600,
    "token_type": "Bearer",
    "refresh_token": "0B27364E6504FB451DD4287D1F1B21BF12DC0FF70AC4E93267F2AB57AD7660F2",
    "scope": "offline_access openid profile"
}

• 校验Token测试：没有Token
  

• 校验Token测试：使用上方得到的Token