自定义令牌类型及令牌有效期

添加自定义令牌配置 CustomEmailConfirmationTokenProviderOptions：

/// <summary>
/// 自定义的令牌配置类
/// </summary>
public class CustomEmailConfirmationTokenProviderOptions : DataProtectionTokenProviderOptions { }

添加自定义令牌 CustomEmailConfirmationTokenProvider：

/// <summary>
/// 自定义邮件验证令牌提供程序
/// </summary>
/// <typeparam name="TUser"></typeparam>
public class CustomEmailConfirmationTokenProvider<TUser> : DataProtectorTokenProvider<TUser> where TUser : class
{
    public CustomEmailConfirmationTokenProvider(IDataProtectionProvider dataProtectionProvider,
        IOptions<CustomEmailConfirmationTokenProviderOptions> options) : base(dataProtectionProvider, options)
    {
    }
}

在 Startup 中配置自定义令牌的过期时间：

public void ConfigureServices(IServiceCollection services)
{
    ...
    services.Configure<IdentityOptions>(options =>
    {
        options.Password.RequiredLength = 6;
        options.Password.RequireNonAlphanumeric = false;
        options.Password.RequireUppercase = false;
        options.SignIn.RequireConfirmedEmail = true;
        // 通过自定义的CustomEmailConfirmation名称来覆盖旧有token名称，
        // 是它与AddTokenProvider<CustomEmailConfirmationTokenProvider<ApplicationUser>>("ltmEmailConfirmation")
        // 关联在一起
        options.Tokens.EmailConfirmationTokenProvider = "ItmEmailConfirmation";
    });
    // Token 有效期修改为 10h
    services.Configure<DataProtectionTokenProviderOptions>(
        opt => opt.TokenLifespan = TimeSpan.FromHours(10));
    // 仅更改电子邮件验证令牌类型的有效时间为 10s
    services.Configure<CustomEmailConfirmationTokenProviderOptions>(
        opt => opt.TokenLifespan = TimeSpan.FromMilliseconds(10));
    ...
    // 1.添加 Identity 服务    2.使用 AppDbContext 存储与身份认证相关的数据
    services.AddIdentity<ApplicationUser, IdentityRole>()
        .AddErrorDescriber<CustomIdentityErrorDescriptor>()
        .AddEntityFrameworkStores<AppDbContext>()
        .AddDefaultTokenProviders()
        .AddTokenProvider<CustomEmailConfirmationTokenProvider<ApplicationUser>>("ItmEmailConfirmation");
    ...
}