在Asp.NET Core3.0API控制器中未使用Authorize修饰方法时，User.Identity.Name使用JWT为空

services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
    .AddJwtBearer(options =>
    {
        options.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"))
        };
    });

app.UseAuthentication();
app.UseAuthorization();

app.UseRouting();

// 其他中间件配置

[Authorize]
[ApiController]
[Route("api/[controller]")]
public class MyController : ControllerBase
{
    [HttpGet]
    public IActionResult Get()
    {
        var userName = User.Identity.Name;
        // 其他逻辑
    }
}