角色：新增前查询 确保角色名未重复新增

duhe

2025-02-14 0ddfefd21654c1a2199277bdd0fb6e1af92e3035

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using System.Web;
using System.Web.Mvc;
 
namespace WebAPI
{
    public class FilterConfig
    {
        public static void RegisterGlobalFilters(GlobalFilterCollection filters)
        {
            filters.Add(new HandleErrorAttribute());
        }
    }
}