具有多个存储库的 ASP.Net MVC 单控制器

Question

我有一个返回存储库的数据访问层。 例如，我有以下存储库接口：

我有这些存储库的实体框架实现。这些实现在运行时使用 Ninject 注入。

我有一个控制器，下面给出了多个存储库

 IUploadRepository _uploadRepository;
 ISalesRepository _salesRepository; 
 ITRSalesRepository _trsalesRepository;
 ILocalPurchaseRepository _localRepository;

使用名为 -HomeController 的单个控制器

为了功能操作，我需要在实现中使用 DBContext，这就是为什么我实现所有这些接口，如下所示：

public class UploadRepository : IUploadRepository
{
    private readonly XMANEntities _entities;
    public UploadRepository(XMANEntities entities)
    {
        _entities = entities;
    }
    *here goes all implementation with context for specific*
}

现在我在 HomeController 中有一个构造函数，看起来像这样：

public class HomeController : Controller
{
  private IUploadRepository uploadRepository;

  public HomeController()
  {
     this.uploadRepository = new UploadRepository(new XMANContext());
  }

  public HomeController(IUploadRepository uploadRepository)
  {
     this.uploadRepository = uploadRepository;
  }
}

如何在此控制器中使用其他人。将多个 repo 注入控制器是不好的做法吗？ 我已经尝试过这种方式，如下所示：

public HomeController() : this(new UploadRepository(
    new XMANEntities()), new SalesRepository(new XMANEntities()), 
    new TRSalesRepository(
       new XMANEntities()), new LocalPurchaseRepository(new XMANEntities()))
{
}

public HomeController(UploadRepository uploadRepository, SalesRepository salesRepository, 
      TRSalesRepository trsalesRepository, LocalPurchaseRepository localPurchaseRepository)
{
    this.uploadRepository = uploadRepository;
    this.salesRepository = salesRepository;
    this.trsalesRepository = trsalesRepository;
    this.localPurchaseRepository = localPurchaseRepository;
}

Answer 1

在一个对象上注入多个依赖项是完全可以接受的。但是，尽可能避免它（事务对象除外）以防止职责混合。您可以查看的一种方法是存储过程。

 private IUploadRepository _uploadRepository;
 private ISalesRepository _salesRepository; 
 private ITRSalesRepository _trsalesRepository;
 private ILocalPurchaseRepository _localRepository;

 public HomeController(
      IUploadRepository uploadRepository,
      ISalesRepository salesRepository,
      ITRSalesRepository trsalesRepository,
      ILocalPurchaseRepository localRepository
 )
 {
     this._uploadRepository = uploadRepository;
     this._salesRepository= salesRepository;
     this._trsalesRepository= trsalesRepository;
     this._localRepository= localRepository;
 }