Question

测试代码使用Autofac是好的，但是DryIoc是错误的。如何使这项工作。

public class HomeController : Controller
        {
            private readonly ITestAppService _testAppService;
            private readonly IEnumerable<ITestAppService> _testAppServiceList;
            public HomeController(ITestAppService testAppService, IEnumerable<ITestAppService> testAppServiceList)
            {
                _testAppService = testAppService;
                _testAppServiceList = testAppServiceList;
            }
    }
public class Test1AppService : ITestAppService{}
public class Test2AppService : ITestAppService{}
public interface ITestAppService: IAppService{}

错误＆＃39;确保控制器具有无参数的公共构造函数＆＃39;是由控制器中的字段ITestAppService而不是IEnumerable字段引起的。以下是我的注册码。

var impls =
                typeof(IAppService).Assembly
                .GetTypes()
                .Where(type =>
                type.IsPublic && 
                !type.IsAbstract && 
                type.GetInterfaces().Length != 0 && typeof(IAppService).IsAssignableFrom(type));

            foreach (var type in impls)
            {
                container.Register(type.GetInterfaces().First(), type, Reuse.Transient);

            }

由dadhi的建议解决，我的容器是

DryIoc.IContainer container = new DryIoc.Container(
                rules =>
                {
                    return rules.WithFactorySelector(Rules.SelectLastRegisteredFactory())
                    .WithResolveIEnumerableAsLazyEnumerable();
                }
            );

关于从多个默认服务中解析的dryioc wiki可能需要一些更新。 Rules.SelectLastRegisteredFactory 是一种方法。

Answer 1

问题在于导致ITestAppService容器doesn't know which to select for the first dependency的两个实现。但您可以明确定义约定：

var container = new Container(rules => rules
    .WithFactorySelector(Rules.SelectLastRegisteredFactory));

如何在DryIoc Mvc控制器中注册IEnumerable <iservice>，如Autofac Enumeration（IEnumerable <b>，IList <b>，ICollection <b>）

1 个答案: