Question

我正在使用jwt令牌进行身份验证，我想从数据库中查找，但是我不知道如何访问数据库来检查用户而不是硬代码用户名

请看下面的代码=>

启动：

          var key = "123456789fsdphvsaihbviasvsifhdsfdsilafhiopadhfiafosia";
        services.AddSingleton<IJwtAuthentication>(new JwtAuthentication(key)); 

        services.AddAuthentication(z =>
        {
            z.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
            z.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
        }).AddJwtBearer(z =>
        {
            z.RequireHttpsMetadata = false;
            z.SaveToken = true;
            z.TokenValidationParameters = new TokenValidationParameters
            {
                ValidateIssuerSigningKey = true,
                IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(JwtSettings.Secret)),
                ValidateIssuer = false,
                ValidateAudience = false,
                ValidateLifetime = true
            };
        });

我的jwt令牌管理器：

 public class JwtAuthentication : IJwtAuthentication
{
    private readonly DataContext _db;
    private readonly string _key;
    private IDictionary<string, string> db;
    public JwtAuthentication(/*DataContext db,*/ string key)
    {
        // _db = db; 
         db = new Dictionary<string, string>();
        db.Add("user", "password"); 
        _key = key;
    }
    public string Authenticate(string username, string password)
    {
        /*  if (!_db.Set<Account>().Any(z => z.UserName == username && z.Password == password.Hash()))
              return null;*/
        if (!db.Any(z => z.Key == username && z.Value == password))
        {
            return null;
        }

        var tokenHandler = new JwtSecurityTokenHandler();
        var tokenKey = Encoding.UTF8.GetBytes(_key);
        var tokenDescriptor = new SecurityTokenDescriptor
        {
            Subject = new ClaimsIdentity(new Claim[]
            {
                new Claim(ClaimTypes.Name, username)/*,
                new Claim("Authenticated","true")*/
            }),
            Expires = DateTime.UtcNow.AddMinutes(10),
            SigningCredentials = new SigningCredentials(new SymmetricSecurityKey(tokenKey), SecurityAlgorithms.HmacSha512Signature)
        };
        var token = tokenHandler.CreateToken(tokenDescriptor);
        return tokenHandler.WriteToken(token);
    }
}

jwt管理器界面：

 public interface IJwtAuthentication
{
    string Authenticate(string username, string password);
}

注意：这里要进行测试，我正在使用字典，但是我想从数据库中检查用户

如果有人共享教程链接，我将非常感谢。谢谢您的帮助

Answer 1

Here是我个人遵循的一个很好的例子。它可能在某些地方已经过时，但仍然可以使用。

真正的Jwt令牌认证

1 个答案: