构造函数参数为字符串的Castle Windsor 3
构造函数参数为字符串的Castle Windsor 3
提问于 2011-11-28 19:29:35
我以前从未使用过Windsor，但使用过其他依赖注入框架，目前我遇到了一个相当奇怪的问题。
我有一个工厂类，它在它的构造函数中接受一个字符串，但是每当我尝试解析那个对象时，我都会得到一个异常，说：
Handler for System.String was not found.
<Message>Handler for System.String was not found.</Message>
<StackTrace>at Castle.MicroKernel.Resolvers.DefaultDependencyResolver
.TryGetHandlerFromKernel(DependencyModel dependency, CreationContext context)
in d:\60b7fa65294e7792\src\Castle.Windsor\MicroKernel\Resolvers\DefaultDependencyResolver.cs:line 403
at Castle.MicroKernel.Resolvers.DefaultDependencyResolver.ResolveCore(CreationContext context, ComponentModel model, DependencyModel dependency) in d:\60b7fa65294e7792\src\Castle.Windsor\MicroKernel\Resolvers\DefaultDependencyResolver.cs:line 270</StackTrace>
<Type>Castle.MicroKernel.Handlers.HandlerException</Type>
</InnerException>
<Message>Missing dependency.
Component SomeExampleFactory has a dependency on System.String, which could not be
resolved.
Make sure the dependency is correctly registered in the container as a service, or
provided as inline argument.</Message>这个类看起来像这样：
public interface IDummyFactory
{
void DoSomething();
}
public class DummyFactory : IDummyFactory
{
private string someString;
public DummyFactory(string someConstructorArg)
{
someString = someConstructorArg;
}
}DI设置如下：
var someString = "some constructor arg";
_container.Register(Component.For<IDummyFactory>()
.ImplementedBy<DummyFactory>()
.DependsOn(someString));我假设它正在尝试进行某种类型的转换或格式化，这会导致它崩溃，但由于类型本身是一个字符串，而变量是在字符串中传递的……它甚至可能试图映射该变量的类型，而不是变量内容，但我对DI框架和这方面的文档了解不够
回答 1
Stack Overflow用户
回答已采纳
发布于 2011-11-28 19:35:35
尝试调用DependsOn的重载，它采用键/值对的IDictionary来指定依赖关系：
_container.Register(
Component.For<IDummyFactory>()
.ImplementedBy<DummyFactory>()
.DependsOn(new Hashtable
{
{ "someConstructorArg", "some constructor arg" }
}));页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/8295167
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