如何设置由GenerateUserTokenAsync在asp.net核心中创建的令牌的TimeSpan

我有"忘记密码"；页面。在这个页面上，我使用_userManager.GenerateUserTokenAsync(user, TokenOptions.DefaultPhoneProvider, "ResetPasswordTokenPurpose");创建了6位数字然后将此代码发送给用户。现在我想设置这个代码的时间跨度，让它在2分钟后过期。我向服务容器添加了一个自定义提供程序，但它不适用于GenerateUserTokenAsync创建的代码。而且我不想设置适用于所有令牌的timeSpan。如何为此设置自定义时间跨度？

这是我的ForgotPassword方法：

public async Task<IActionResult> OnPostAsync()
{
if (ModelState.IsValid)
{
var user = await _userManager.FindByEmailAsync(Input.Email);
if (user == null || !(await _userManager.IsEmailConfirmedAsync(user)))
{
return RedirectToPage("./ForgotPasswordConfirmation");
}

var code = await _userManager.GenerateUserTokenAsync(user, TokenOptions.DefaultPhoneProvider, "ResetPasswordTokenPurpose");//create 6 digit code and use it in send sms

code = WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(code));
sendSms(code);                
return RedirectToPage("./ForgotPasswordConfirmation");
}
return Page();
}

这是ResetPassword方法：

public async Task<IActionResult> OnPostAsync()
{
if (!ModelState.IsValid)
{
return Page();
}
var user = await _userManager.FindByEmailAsync(Input.Email);
if (user == null)
{
// Don't reveal that the user does not exist
return RedirectToPage("./ResetPasswordConfirmation");
}
var tokenVerified = await _userManager.VerifyUserTokenAsync(user, TokenOptions.DefaultPhoneProvider, "ResetPasswordTokenPurpose", Input.Code);//check validate 6 digit code
if (!tokenVerified)
return Page();
var token = await _userManager.GeneratePasswordResetTokenAsync(user);//new token for reseting password
var result = await _userManager.ResetPasswordAsync(user, token, Input.Password);
if (result.Succeeded)
{
return RedirectToPage("./ResetPasswordConfirmation");
}
foreach (var error in result.Errors)
{
ModelState.AddModelError(string.Empty, error.Description);
}
return Page();
}

更改ResetPassword令牌寿命：

public class CustomResetPasswordTokenProvider<TUser>
: DataProtectorTokenProvider<TUser> where TUser : class
{
public CustomResetPasswordTokenProvider(
IDataProtectionProvider dataProtectionProvider,
IOptions<ResetPasswordTokenProviderOptions> options)
: base(dataProtectionProvider, options)
{
}
}
public class ResetPasswordTokenProviderOptions : DataProtectionTokenProviderOptions
{
public ResetPasswordTokenProviderOptions()
{
Name = "ResetPasswordProtectorTokenProvider";
TokenLifespan = TimeSpan.FromMinutes(2);
}
}

在StartUp.cs:中调用它

services.AddDefaultIdentity<IdentityUser>(config =>
{
config.Tokens.ProviderMap.Add("CustomResetPassword",
new TokenProviderDescriptor(
typeof(CustomResetPasswordTokenProvider<IdentityUser>)));
config.Tokens.PasswordResetTokenProvider = "CustomResetPassword";
}).AddEntityFrameworkStores<ApplicationDbContext>();
services.AddTransient<CustomResetPasswordTokenProvider<IdentityUser>>();