注册新的依赖

Question

我正在使用 asp.net boilerplate 创建新项目。

我定义了如下新服务：

public class Employee : Entity<int>
{
    public string FName { get; set; }
    public string LName { get; set; }
}

public interface IEmployeeAppService : IApplicationService
{
    Employee AddEmployee(Employee emp);
    List<Employee> GetAll();
}

public class EmployeeAppService : MyTestProjectAppServiceBase, IEmployeeAppService
{
    private IRepository<Employee, int> _employeeRepository;

    public EmployeeAppService(IRepository<Employee, int> repo)
    {
        _employeeRepository = repo;
    }

    public Employee AddEmployee(Employee emp)
    {
        return _employeeRepository.Insert(emp);
    }

    public List<Employee> GetAll()
    {
        return _employeeRepository.GetAllList();
    } 
}

我想使用 HomeController 中的服务：

public class HomeController : MyTestProjectControllerBase
{
    IEmployeeAppService service;

    public HomeController(IEmployeeAppService svc)
    {
        service = svc;
    }
}

当我运行应用程序时，出现以下错误：

Can't create component 'MyTestProject.Services.EmployeeAppService' as it has dependencies to be satisfied.

'MyTestProject.Services.EmployeeAppService' is waiting for the following dependencies:
- Service 'Abp.Domain.Repositories.IRepository`2[[MyTestProject.Domain.Employee, MyTestProject.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]' which was not registered.

如何向 HomeController 注册 EmployeeAppService 依赖项？

更新

我尝试了以下代码

IocManager.Register(typeof(IRepository<Employee, int>),
                    typeof(EmployeeAppService),
                    Abp.Dependency.DependencyLifeStyle.Transient);

但随后显示此错误

There is already a component with that name. Did you want to modify the existing component instead? If not, make sure you specify a unique name.

Answer 1

当您的实体（在本例中为 Employee）未在您的 DbContext 中指定时，通常会发生这种情况。

只需将以下属性添加到您的 DbContext class，您就可以开始了：

public virtual IDbSet<Employee> Employees { get; set; }

Answer 2

您无需手动注册应用程序服务。删除代码 IocManager.Register ...

当您基于 IApplicationService 时，它会自动注册到 DI。

错误说 EmployeeAppService 无法解析。所以就像 Jacques Snyman 说的那样，将 Employee 实体添加到 DbContext。

注册新的依赖

Registering new dependency

asp.net

asp.net-mvc

boilerplate

aspnetboilerplate