Question

我正在编写一个ASP.NET MVC 5应用程序，该应用程序scafolded一个身份验证，但登录只使用UserName验证/登录用户。如何编辑登录方法以接受电子邮件或用户名？

Answer 1

如果您对作为电子邮件地址的数据库进行制作和额外调用感到满意，请参阅以下示例。

[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Signin(LoginViewModel model, string returnUrl) {
    if (ModelState.IsValid) {
        string username = model.UserName;
        ApplicationUser user = null;
        // CHECK FOR EMAIL
        if(IsValidEmail(username)) {
            user = await userManager.FindByEmailAsync(username);
            if(user != null) username = user.UserName;
            else {
                // If user with email address does not exists, here is a good place
                // to exit as we have already ascertained that the user is not in the system
                ModelState.AddModelError("", "Invalid user name or password provided.") 
                return View(model); 
            }                
        }
        // END CHECK FOR EMAIL
        user = await userManager.FindAsync(username, model.Password);
        if (user != null) {
            await SignInAsync(user, model.RememberMe);
            .....
        } else {
            ModelState.AddModelError("", "Invalid user name or password provided.") 
        }
    }

    // If we got this far, something failed, re-display form
    return View(model);
}

private static bool IsValidEmail(string email) {
    string MatchEmailPattern =
       @"^(([\w-]+\.)+[\w-]+|([a-zA-Z]{1}|[\w-]{2,}))@" +
       @"((([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\." +
       @"([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])){1}|" +
       @"([a-zA-Z]+[\w-]+\.)+[a-zA-Z]{2,4})$";

    if (!IsNullOrWhiteSpace(email)) {
        string pattern = MatchEmailPattern;
        return System.Text.RegularExpressions.Regex.IsMatch(email, pattern, System.Text.RegularExpressions.RegexOptions.IgnoreCase);
    } else {
        return false;
    }
}

Answer 2

只需使UserName和Email相同即可。与在UserName字段中存储电子邮件一样。

如何在Identity 2中使用ASP.NET中的UserName或Email登录？

2 个答案: