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[英]DependencyResolver in System.Web.Http.HttpConfiguration vs DependencyResolver in System.Web.Mvc
[英]System.web.Mvc DependencyResolver not able to create object for generic classes
我試圖在Controller中使用dependencyinjection並使用System.Web.MvcDependencyResolver.Current.GetService()在控制器類中創建服務實例。
當服務接口非通用時,這可以正常工作,如下所示
public interface IProfileManagementService
{
IList<News> GetSavedSearchList(int userObjectId, ApplicationType applicationType,int? vendorUserObjectId);
}
我的依賴解析器語法如下所示為我提供了ProfileManagementService的實例
DependencyResolver.Current.GetService<IProfileManagementService>();
但是,如果我創建任何通用服務接口,如下所示,
public interface ICommonProfileManagementService<T>
{
IList<T> GetSavedSearchList(int userObjectId, ApplicationType applicationType,int? vendorUserObjectId);
}
但是我為下面的代碼得到了一個null(沒有創建CommonProfileManagementService對象)
DependencyResolver.Current.GetService<ICommonProfileManagementService<News>>();
請建議一些其他的傳球方式
IService<T>
代替
IService
到DependencyResolver.Current.GetService()
以下是完整代碼,包括從DependencyResolver返回泛型所需的語法。
using Microsoft.Practices.Unity;
using System;
using System.Collections.Generic;
using System.Web.Mvc;
using Microsoft.Practices.Unity.Mvc;
namespace ConsoleApplication2
{
class Program
{
public interface IService<T>
{
List<T> GetService();
}
public class Service<T> : IService<T>
{
public List<T> GetService()
{
return new List<T>();
}
}
static void Main(string[] args)
{
var container = new UnityContainer();
container.RegisterType(typeof(IService<>), typeof(Service<>));
DependencyResolver.SetResolver(new UnityDependencyResolver(container));
var service = DependencyResolver.Current.GetService(typeof(IService<string>));
Console.WriteLine(service.ToString());
Console.ReadKey();
}
}
}
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