C# -如何从Web API 2上的JWT添加用户声明/角色

app.UseJwtBearerAuthentication(new JwtBearerAuthenticationOptions
{
    AuthenticationMode = AuthenticationMode.Active,
    TokenValidationParameters = new TokenValidationParameters
    {
        ValidateIssuer = true,
        ValidateAudience = true,
        ValidateLifetime = true,
        ValidateIssuerSigningKey = true,
        ValidIssuer = "your_issuer",
        ValidAudience = "your_audience",
        IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes("your_secret_key"))
    }
});

var claims = new List<Claim>
{
    new Claim(ClaimTypes.Name, "username"),
    new Claim(ClaimTypes.Role, "role")
};

var tokenHandler = new JwtSecurityTokenHandler();
var tokenDescriptor = new SecurityTokenDescriptor
{
    Subject = new ClaimsIdentity(claims),
    Expires = DateTime.UtcNow.AddHours(1),
    SigningCredentials = new SigningCredentials(new SymmetricSecurityKey(Encoding.UTF8.GetBytes("your_secret_key")), SecurityAlgorithms.HmacSha256Signature)
};

var token = tokenHandler.CreateToken(tokenDescriptor);
var tokenString = tokenHandler.WriteToken(token);