- 我有一个位于“API”文件夹中的API控制器,它在“Controllers”文件夹外。
- 我还尝试将其放置在“Controllers”文件夹中,但似乎没有什么区别。我收到的堆栈跟踪与此问题中提出的相似。
- 我正在使用“Simple Injector MVC Integration Quick Start”NuGet包(v. 2.1.0)的最新安装版。
- 我有从文档中得到的基本
SimpleInjectorWebApiDependencyResolver
,它也与此处找到的相同。 - 我正在使用Entity Framework,并查看了关于更改以正确加载上下文的讨论线程。
这似乎不是问题,但我仍然收到以下错误:
Type 'MyProject.API.ArticleController' does not have a default constructor
System.ArgumentException at
System.Linq.Expressions.Expression.New(Type type) at System.Web.Http.Internal.TypeActivator.Create[TBase](Type instanceType) at System.Web.Http.Dispatcher.DefaultHttpControllerActivator.GetInstanceOrActivator(HttpRequestMessage request, Type controllerType, Func`1& activator) at System.Web.Http.Dispatcher.DefaultHttpControllerActivator.Create(HttpRequestMessage request, HttpControllerDescriptor controllerDescriptor, Type controllerType)
如果有人能为我提供一些建议,告诉我是否应修改任何内容/调用顺序,那将不胜感激。
ArticleController(基本结构):
public class ArticleController : ApiController
{
private readonly IArticleRepository articleRepository;
private readonly IUserRepository userRepository;
private readonly IReleaseRepository releaseRepository;
public ArticleController(IArticleRepository articleRepository, IUserRepository userRepository, IReleaseRepository releaseRepository)
{
this.articleRepository = articleRepository;
this.userRepository = userRepository;
this.releaseRepository = releaseRepository;
}
// GET api/Article
public IEnumerable<Article> GetArticles(){ // code }
// GET api/Article/5
public Article GetArticle(int id){ // code }
// PUT api/Article/5
public HttpResponseMessage PutArticle(int id, Article article){ // code }
// POST api/Article
public HttpResponseMessage PostArticle(ArticleModel article){ // code }
// DELETE api/Article/5
public HttpResponseMessage DeleteArticle(int id){ // code }
}
SimpleInjectorInitializer:
public static class SimpleInjectorInitializer
{
public static void Initialize()
{
var container = new Container();
InitializeContainer(container);
container.RegisterMvcControllers(Assembly.GetExecutingAssembly());
container.RegisterMvcAttributeFilterProvider();
container.Verify();
DependencyResolver.SetResolver(new SimpleInjectorDependencyResolver(container));
}
private static void InitializeContainer(Container container)
{
container.Register<IArticleRepository, ArticleRepository>();
container.Register<IUserRepository, UserRepository>();
container.Register<IReleaseRepository, ReleaseRepository>();
}
}
Global.asax.cs:
public class WebApiApplication : System.Web.HttpApplication
{
private void ConfigureApi()
{
// Create the container as usual.
var container = new Container();
// Verify the container configuration
// container.Verify();
// Register the dependency resolver.
GlobalConfiguration.Configuration.DependencyResolver =
new SimpleInjectorWebApiDependencyResolver(container);
}
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
ConfigureApi();
WebApiConfig.Register(GlobalConfiguration.Configuration);
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
}
}
ConfigureApi
方法真的被执行了吗?你设置了断点吗? - Steven