Question

我是IoC和Autofac的新手。我创建了一个简单的控制台项目来测试该技术。当我运行该应用程序时，出现以下错误：所请求的服务'AutoFac.BLL.IEmployeeDetail'未注册。以下是我的代码。这行抛出错误：build.Register（y => new Employee（y.Resolve（）））;

public class Employee
{
    IEmployeeDetail _employeeDetail;

    public Employee(IEmployeeDetail employeeDetail)
    {
        _employeeDetail = employeeDetail;
    }

    public string GetName()
    {
        return _employeeDetail.Name();
    }
}

public class EmployeeDetail : IEmployeeDetail
{
    public string Name()
    {
        return "John Doe";
    }
}

public interface IEmployeeDetail
{
    string Name();
}

public class Program
{
    static void Main(string[] args)
    {
        var build = new ContainerBuilder();
        build.Register(y => new Employee(y.Resolve<IEmployeeDetail>()));
        var container = build.Build();
        Employee employee = container.Resolve<Employee>();

        Console.WriteLine(employee.GetName());
        Console.ReadLine();
    }
}

Answer 1

尝试：

static void Main(string[] args)
{
    var build = new ContainerBuilder();
    build.Register<EmployeeDetail>().As<IEmployeeDetail>().InstancePerDepenency();
    build.Register<Employee>().AsSelf().InstancePerDependency();
    var container = build.Build();
    Employee employee = container.Resolve<Employee>();

    Console.WriteLine(employee.GetName());
    Console.ReadLine();
}

说明：

不仅必须注册作为依赖项的类型，还必须注册使用这些依赖项的类型。基本上，您要解决的所有问题。

无法使用Autofac注入对象

1 个答案: