使用Spring.Net注入依赖关系ASP.NET MVC ActionFilters [英] Using Spring.Net to inject dependencies into ASP.NET MVC ActionFilters

问题描述

我使用MvcContrib做我的Spring.Net ASP.Net MVC控制器依赖注入。
我的依赖性没有被注入到我的CustomAttribute行为过滤器。
如何让我的依赖关系呢？

假设你有一个看起来像这样的ActionFilter：

 公共类CustomAttribute：ActionFilterAttribute，ICustomAttribute
{
    私人IAwesomeService awesomeService;    公共CustomAttribute（）{}    公共CustomAttribute（IAwesomeService awesomeService）
    {
          this.awesomeService = awesomeService;
    }    公共覆盖无效OnActionExecuting（ActionExecutingContext filterContext）
    {
         //做一些工作
    }
}
 

随着Spring.Net配置部分看起来像这样：

 ＆LT;对象ID =CustomAttributeTYPE =Assembly.CustomAttribute，集结号单身=false的＆GT;
    ＆LT;构造 - 精氨酸REF =AwesomeService/＆GT;
＆LT; /对象＆gt;
 

和使用属性，像这样：

  [自定义]
公共FooController的：控制器
{
    //做一些工作
}
 

解决方案

在这里艰难的部分是ActionFilters似乎得到新的实例化的每个请求，并在背景下，是春天的地方是知道外面。我用我的ActionFilter构造的春天ContextRegistry类处理相同的情况。不幸的是它引入了春天特定API的使用到code，这是一个很好的做法，以避免，如果可能的话。

下面就是我的构造函数如下：

 公共MyAttribute（）
{
    CustomHelper = ContextRegistry.GetContext（）GetObject的（CustomHelper）作为IConfigHelper。
}
 

请记住，如果要加载多个Spring上下文的，你需要指定你在的getContext（...）方法想要的内容。

I'm using MvcContrib to do my Spring.Net ASP.Net MVC controller dependency injection. My dependencies are not being injected into my CustomAttribute action filter. How to I get my dependencies into it?

Say you have an ActionFilter that looks like so:

public class CustomAttribute : ActionFilterAttribute, ICustomAttribute
{
    private IAwesomeService awesomeService;

    public CustomAttribute(){}

    public CustomAttribute(IAwesomeService awesomeService)
    {
          this.awesomeService= awesomeService;
    }

    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
         //Do some work
    }
}

With a Spring.Net configuration section that looks like so:

<object id="CustomAttribute " type="Assembly.CustomAttribute , Assembly" singleton="false">
    <constructor-arg ref="AwesomeService"/>
</object>

And you use the Attribute like so:

[Custom]
public FooController : Controller
{
    //Do some work
}

解决方案

The tough part here is that ActionFilters seem to get instantiated new with each request and in a context that is outside of where Spring is aware. I handled the same situations using the Spring "ContextRegistry" class in my ActionFilter constructor. Unfortunately it introduces Spring specific API usage into your code, which is a good practice to avoid, if possible.

Here's what my constructor looks like:

public MyAttribute()
{
    CustomHelper = ContextRegistry.GetContext().GetObject("CustomHelper") as IConfigHelper;
}

Keep in mind that if you are loading multiple Spring contexts, you will need to specify which context you want in the GetContext(...) method.

这篇关于使用Spring.Net注入依赖关系ASP.NET MVC ActionFilters的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！