/// <summary>
/// 获取指定上下文类型的上下文对象
/// </summary>
public static IDbContext GetDbContext <TDbContext>(this IUnitOfWorkManager unitOfWorkManager)
where TDbContext : IDbContext
{
Type dbContextType = typeof(TDbContext);
IUnitOfWork unitOfWork = unitOfWorkManager.GetDbContextUnitOfWork(dbContextType);
return(unitOfWork.GetDbContext(dbContextType));
}