asp.net-web-api - Web API 控制器的集成测试给出以下错误：类型“XXXController”没有默认构造函数

Question

完整的错误信息：

{
    "Message":"An error has occurred.",
    "ExceptionMessage":"Type 'XXXController' does not have a default constructor",
    "ExceptionType":"System.ArgumentException",
    "StackTrace":"   at System.Linq.Expressions.Expression.New(Type type)\r\n   at System.Web.Http.Internal.TypeActivator.Create[TBase](Type instanceType)\r\n   at System.Web.Http.Dispatcher.DefaultHttpControllerActivator.GetInstanceOrActivator(HttpRequestMessage request, Type controllerType, Func`1& activator)\r\n   at System.Web.Http.Dispatcher.DefaultHttpControllerActivator.Create(HttpRequestMessage request, HttpControllerDescriptor controllerDescriptor, Type controllerType)"
}

我已经做了一些谷歌搜索，现在我坚持下一步要尝试什么。

我已经安装了一个NinjectDependencyResolver通过：

PM> Install-Package Ninject.WebApi.DependencyResolver

并在方法中使用以下代码TestInitialize来创建HttpClient：

 var kernel = new StandardKernel(/* ... */);

var config = new HttpSelfHostConfiguration(BaseAddress);

/* ... */

config.DependencyResolver = new NinjectDependencyResolver(kernel);

_client = new HttpClient(new HttpServer(config));

然后在客户端发出PostAsync请求。结果的内容顶部有错误。

提前致谢！

Answer 1

在输入这个问题时，我仔细检查并注意到我没有将我的一个NinjectModule's 传递到StandardKernel. 添加注册了传递给构造函数的类型的模块解决了该异常。如果我缺少一个类型的绑定，我希望它会说别的东西（比如“找不到绑定IMyInterface”）。