是否有一种简单的方法可以使用另一个现有SQL Server数据库表中的用户名数据在登录Blazor服务器模板中进行身份验证？
我在Login.cshtml 中有这个表格
<form id="account" method="post">
<h5>Usa il tuo account per accedere al sito.</h5>
<div asp-validation-summary="All" class="text-danger"></div>
<div class="form-group">
<label asp-for="Input.Email"></label>
<input asp-for="Input.Email" class="form-control" />
<span asp-validation-for="Input.Email" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="Input.Password"></label>
<input asp-for="Input.Password" class="form-control" />
<span asp-validation-for="Input.Password" class="text-danger"></span>
</div>
<div class="form-group">
<div class="checkbox">
<label asp-for="Input.RememberMe">
<input asp-for="Input.RememberMe" />
@Html.DisplayNameFor(m => m.Input.RememberMe)
</label>
</div>
</div>
<div class="form-group">
<button type="submit" class="btn btn-primary">Accedi</button>
</div>
</form>
这是我的Login.cshtml.cs
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text.Encodings.Web;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Identity.UI.Services;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
using Microsoft.Extensions.Logging;
namespace BbcSrUI.Areas.Identity.Pages.Account
{
[AllowAnonymous]
public class LoginModel : PageModel
{
private readonly UserManager<IdentityUser> _userManager;
private readonly SignInManager<IdentityUser> _signInManager;
private readonly ILogger<LoginModel> _logger;
public LoginModel(SignInManager<IdentityUser> signInManager,
ILogger<LoginModel> logger,
UserManager<IdentityUser> userManager)
{
_userManager = userManager;
_signInManager = signInManager;
_logger = logger;
}
[BindProperty]
public InputModel Input { get; set; }
public IList<AuthenticationScheme> ExternalLogins { get; set; }
public string ReturnUrl { get; set; }
[TempData]
public string ErrorMessage { get; set; }
public class InputModel
{
[Required]
[EmailAddress]
public string Email { get; set; }
[Required]
[DataType(DataType.Password)]
public string Password { get; set; }
[Display(Name = "Remember me?")]
public bool RememberMe { get; set; }
}
public async Task OnGetAsync(string returnUrl = null)
{
if (!string.IsNullOrEmpty(ErrorMessage))
{
ModelState.AddModelError(string.Empty, ErrorMessage);
}
returnUrl ??= Url.Content("~/");
// Clear the existing external cookie to ensure a clean login process
await HttpContext.SignOutAsync(IdentityConstants.ExternalScheme);
ExternalLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync()).ToList();
ReturnUrl = returnUrl;
}
public async Task<IActionResult> OnPostAsync(string returnUrl = null)
{
returnUrl ??= Url.Content("~/");
ExternalLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync()).ToList();
if (ModelState.IsValid)
{
// This doesn't count login failures towards account lockout
// To enable password failures to trigger account lockout, set lockoutOnFailure: true
var result = await _signInManager.PasswordSignInAsync(Input.Email, Input.Password, Input.RememberMe, lockoutOnFailure: false);
if (result.Succeeded)
{
_logger.LogInformation("User logged in.");
return LocalRedirect(returnUrl);
}
if (result.RequiresTwoFactor)
{
return RedirectToPage("./LoginWith2fa", new { ReturnUrl = returnUrl, RememberMe = Input.RememberMe });
}
if (result.IsLockedOut)
{
_logger.LogWarning("User account locked out.");
return RedirectToPage("./Lockout");
}
else
{
ModelState.AddModelError(string.Empty, "Invalid login attempt.");
return Page();
}
}
// If we got this far, something failed, redisplay form
return Page();
}
}
}
我想用用户名和密码链接一个现有的DB表，以检查输入用户是否有效。
谢谢！
一种解决方案是创建自己的身份验证系统，检查输入的密码是否匹配，并生成cookie或JWT令牌。不过出于安全考虑，我建议不要这样做。
您应该使用ASP.NET附带的标识系统。在该系统中，您可以使用UserManager类对用户进行身份验证。
首先，将其添加到您的服务集合中：
services.AddIdentity<ApplicationUser, IdentityRole>()
.AddEntityFrameworkStores<UserDbContext>()
.AddDefaultTokenProviders();
CCD_ 2是将由CCD_ 3使用的数据库上下文。它继承自IdentityDbContext<ApplicationUser>或IdentityDbContext。
之后，为了登录用户，如果你想通过API来实现，你可以做这样的事情：
[HttpPost]
[Route("login")]
[AllowAnonymous]
public async Task<IActionResult> Login([FromBody] LoginModel loginModel)
{
ApplicationUser user = await userManager.FindByNameAsync(loginModel.Username);
if ((user is not null) && await userManager.CheckPasswordAsync(user, loginModel.Password))
{
IList<string> userRoles = await userManager.GetRolesAsync(user);
List<Claim> authClaims = new()
{
new Claim(ClaimTypes.Name, user.UserName),
new Claim(ClaimTypes.NameIdentifier, user.Id),
new Claim(Microsoft.IdentityModel.JsonWebTokens.JwtRegisteredClaimNames.Jti, Guid.NewGuid().ToString()),
new Claim(ClaimTypes.AuthenticationMethod, "pwd")
};
foreach (string role in userRoles)
{
authClaims.Add(new Claim(ClaimTypes.Role, role));
}
SymmetricSecurityKey authSigningKey = new(Encoding.UTF8.GetBytes(_configuration["JWT:Secret"]));
//SymmetricSecurityKey authSigningKey = Startup.SecurityAppKey;
JwtSecurityToken token = new(
issuer: _configuration["JWT:ValidIssuer"],
audience: _configuration["JWT:ValidAudience"],
expires: DateTime.Now.AddHours(3),
claims: authClaims,
signingCredentials: new SigningCredentials(authSigningKey, SecurityAlgorithms.HmacSha256)
);
return Ok(new
{
token = new JwtSecurityTokenHandler().WriteToken(token),
expiration = token.ValidTo
});
}
return Unauthorized();
}
在阅读了我们的问题后，我编写了一个模板项目，解释了如何在Blazor中处理身份验证。
Blazor中的身份验证过于复杂，无法在此处获得完整答案。
目标是
- 与数据库无关
- 支持多语言
- 支持页面重新加载
https://github.com/iso8859/AspNetCoreAuthMultiLang