BadRequestObjectResult, writing value of type 'Microsoft.AspNetCore.Mvc.ValidationProblemDetails'。net core获取参数验证的错误。找到实体验证的错误

net core获取参数验证的错误,这样写就可以了：

services.Configure<ApiBehaviorOptions>(options =>
{
    options.InvalidModelStateResponseFactory = (context) =>
    {
        //var error = context.ModelState.Select(x => x.Value.Errors?.FirstOrDefault().ErrorMessage).ToList();
        var newError = context.ModelState.Where(x => x.Value.Errors.Count > 0)
        .Select(x => new { Name = x.Key, Message = x.Value.Errors?.FirstOrDefault().ErrorMessage }).ToList();
        //return new Microsoft.AspNetCore.Mvc.BadRequestObjectResult($"参数验证不通过：{string.Join("|",error)}");
        return new UnprocessableEntityObjectResult($"参数验证不通过：{JsonConvert.SerializeObject(newError)}");
    };
});