如何处理asp.net核心webapi中的验证异常

app.UseExceptionHandler(errorApp =>
{
    errorApp.Run(async context =>
    {
        context.Response.StatusCode = (int)HttpStatusCode.BadRequest;
        context.Response.ContentType = "application/json";

        var error = context.Features.Get<IExceptionHandlerFeature>();
        if (error != null)
        {
            var errorMessage = new
            {
                Message = "Validation Failed",
                Errors = error.Error.Message
            };

            var json = JsonConvert.SerializeObject(errorMessage);
            await context.Response.WriteAsync(json);
        }
    });
});

public class ValidationExceptionFilter : IExceptionFilter
{
    public void OnException(ExceptionContext context)
    {
        if (context.Exception is ValidationException)
        {
            context.Result = new BadRequestObjectResult(new
            {
                Message = "Validation Failed",
                Errors = ((ValidationException)context.Exception).Errors
            });
            context.ExceptionHandled = true;
        }
    }
}

services.AddMvc(options =>
{
    options.Filters.Add(typeof(ValidationExceptionFilter));
});

[HttpPost]
public IActionResult Create([FromBody] MyModel model)
{
    if (!ModelState.IsValid)
    {
        var errors = ModelState.Values.SelectMany(v => v.Errors)
                                      .Select(e => e.ErrorMessage)
                                      .ToList();
        return BadRequest(new
        {
            Message = "Validation Failed",
            Errors = errors
        });
    }

    // 处理有效的模型数据
    // ...

    return Ok();
}