ASP.NET服务与存储库层

考虑这个例子：

class UserRepository : IUserRepository
{
   public void Create(User userToCreate)
   {
       //update tracking and save to repository
       _userToCreate.DateCreated = DateTime.Now;
       _dataContext.AddNew(userToCreate);
   }
}


class UserService : IUserService 
{
   private IUserRepository _repository;

   public UserService(IUserRepository repository)
   {
        _repository = repository;
   }

   public void Create(User createdByUser,User userToCreate)
   {
       //implement some business rules
       if(!createdByUser.HasRights(UserRights.CanCreateNewUser))
           throw new Exception("This user '"+createdByUser.Name+"' does not have the rights to create a new user");

       //update rules auditing
       _userToCreate.CreatedByUserId = createdByUser.Id;

       //save entity to repository
       _repository.Create(userToCreate);
   }
}

然后在您的控制器操作中，您将直接使用可以应用所有业务规则的服务。这样，您可以使用嘲笑单独/独立地测试控制器，业务规则(服务)和持久性(存储库)。

public ActionResult CreateUser(User newUser)
    {
        if(ModelState.IsValid)
        {
           _userService.Create(this.CurrentUser,newUser);
           if(newUser.Id > 0)
               return RedirectToAction("UserCreated");
        }
        return View(newUser);
    }