控制器本身是不带有参的构造函数的，如果我们为控制器仅仅提供有参的构造函数，就会报错。不过，可以利用DependencyResolver的SetResolver方法，让ASP.NET MVC支持有参的构造函数。
1：为系统准备两个类型，如下：
注意，这里要实现的是让控制器支持Unity注入。
UnityControllerFactory代码如下：
public
class
UnityControllerFactory : DefaultControllerFactory
{
IUnityContainer container;
public
UnityControllerFactory(IUnityContainer container)
{
this
.container = container;
}
protected
override
IController GetControllerInstance(RequestContext reqContext,
Type controllerType)
{
if
(controllerType ==
null
)
{
return
null
;
}
return
container.Resolve(controllerType)
as
IController;
}
}
|
UnityDependencyResolver代码如下：
public
class
UnityDependencyResolver : IDependencyResolver
{
IUnityContainer container;
public
UnityDependencyResolver(IUnityContainer container)
{
this
.container = container;
}
public
object
GetService(Type serviceType)
{
if
(!
this
.container.IsRegistered(serviceType))
{
return
null
;
}
return
container.Resolve(serviceType);
}
public
IEnumerable<
object
> GetServices(Type serviceType)
{
return
container.ResolveAll(serviceType);
}
}
|
2：在Application_Start中注册
代码如下：
using
(IUnityContainer container =
new
UnityContainer())
{
UnityConfigurationSection section = (UnityConfigurationSection)ConfigurationManager.GetSection(
"unity"
);
section.Configure(container,
"containerOne"
);
//tell mvc use UnityDependencyResolver to create controll instances;
container.RegisterType<IControllerFactory, UnityControllerFactory>();
//_container.RegisterType<ISubjectRepository, SubjectRepository>(new TransientLifetimeManager());
DependencyResolver.SetResolver(
new
UnityDependencyResolver(container));
}
|
3：Web.config配置如下
<configSections>
<section name=
"unity"
type=
"Microsoft.Practices.Unity.Configuration.UnityConfigurationSection,Microsoft.Practices.Unity.Configuration"
/>
</configSections>
<assembly name=
"SampleProject"
/>
<
namespace
name=
"SampleProject"
/>
<alias alias=
"ISampleClass"
type=
"ISampleClass"
/>
<alias alias=
"SampleClass"
type=
"SampleClass"
/>
<container name=
"containerOne"
>
<register type=
"ISampleClass"
mapTo=
"SampleClass"
/>
</container>
</unity>
|
至此，完成本文所述功能。
本文转自最课程陆敏技博客园博客，原文链接：http://www.cnblogs.com/luminji/archive/2011/12/22/2298262.html，如需转载请自行联系原作者
