最佳实践:结构图和ASP.NET抽象基控制器中的mvc2-Setter注入/结构注入

public abstract class ConventionController : Controller
{
    public const int PageSize = 5;

    public IMappingService MappingService { get; set;}
}

如何设置StructureMap来获取IMappingService的实例?

在…的帮助下 约书亚·弗拉纳根 我现在有以下代码:

员工控制员

public class EmployeeController : ConventionController
{
    private readonly ITeamEmployeeRepository _teamEmployeeRepository;

    public EmployeeController(ITeamEmployeeRepository teamEmployeeRepository)
    {
        _teamEmployeeRepository = teamEmployeeRepository;
    }

    public ActionResult Index(int page = 1)
    {
        // The IMappingService dependency is hidden in the AutoMappedHybridView method that is a part of the ConventionController, easy use in the controller
        return AutoMappedHybridView<TeamEmployee, TeamEmployeeForm>(_teamEmployeeRepository.GetPagedEmployees(page, PageSize));

       // With constructor injection I had to write this ...
       // return new HybridViewResult<TSourceElement, TDestinationElement>(_mappingService, _teamEmployeeRepository.GetPagedEmployees(page, PageSize));
    }
 }

约定控制员

public abstract class ConventionController : Controller
{
    public const int PageSize = 5;

    // This property is inject via StructureMap
    public IMappingService MappingService { get; private set; }

    public HybridViewResult<TSourceElement, TDestinationElement> AutoMappedHybridView<TSourceElement,TDestinationElement>(PagedList<TSourceElement> pagedList, string viewNameForAjaxRequest)
    {
        return new HybridViewResult<TSourceElement, TDestinationElement>(MappingService, pagedList, viewNameForAjaxRequest);
    }

    public HybridViewResult<TSourceElement, TDestinationElement> AutoMappedHybridView<TSourceElement,TDestinationElement>(PagedList<TSourceElement> pagedList)
    {
        return new HybridViewResult<TSourceElement, TDestinationElement>(MappingService, pagedList);
    }

    public HybridViewResult<TSourceElement, TDestinationElement> AutoMappedHybridView<TSourceElement, TDestinationElement>(TSourceElement sourceElement)
    {
        return new HybridViewResult<TSourceElement, TDestinationElement>(MappingService, sourceElement);
    }

    public HybridViewResult<TSourceElement, TDestinationElement> AutoMappedHybridView<TSourceElement, TDestinationElement>(TSourceElement sourceElement, string viewNameForAjaxRequest)
    {
        return new HybridViewResult<TSourceElement, TDestinationElement>(MappingService, sourceElement, viewNameForAjaxRequest);
    }
}

杂交结果

public class HybridViewResult<TSourceElement, TDestinationElement> : BaseHybridViewResult
{
    public HybridViewResult(IMappingService mappingService, PagedList<TSourceElement> pagedList)
    {
        ViewModel = mappingService.MapToViewModelPagedList<TSourceElement, TDestinationElement>(pagedList);
    }

    public HybridViewResult(IMappingService mappingService, PagedList<TSourceElement> pagedList, string viewNameForAjaxRequest)
    {
        ViewNameForAjaxRequest = viewNameForAjaxRequest;
        ViewModel = mappingService.MapToViewModelPagedList<TSourceElement, TDestinationElement>(pagedList);
    }

    public HybridViewResult(IMappingService mappingService, TSourceElement model)
    {
        ViewModel = mappingService.Map<TSourceElement, TDestinationElement>(model);
    }

    public HybridViewResult(IMappingService mappingService, TSourceElement model, string viewNameForAjaxRequest)
    {
        ViewNameForAjaxRequest = viewNameForAjaxRequest;
        ViewModel = mappingService.Map<TSourceElement, TDestinationElement>(model);
    }
}

如您所见,HybridViewResult需要IMappingService依赖项。

如果EmployeeController直接需要IMapping依赖项,我将使用构造函数进行注入。但这不是必需的,因为ConventionController已经有IMapping属性。所以

如何重构代码?我真的必须使用构造函数注入吗?

编辑2

我如何命令StructureMap创建HybridViewResult的实例?如果这是可能的,控制器就不需要知道IMapping依赖关系。有没有可能从StructureMap中得到一个通用对象(不是装箱的)?