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ASP.NET Web Application 中使用 Unity 依赖注入容器

news 来源：原创 2024/5/5 22:28:01

下面的示例演示在ASP.NET Web Application 中使用 Unity 依赖注入容器。下载 ASP.NetWeb Application 源码！！！

具体步骤如下：

1. 创建IUnityContainer 接口文件 – IUnity.cs

using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.Practices.Unity;

namespace UnityASPNET
{
interface IUnity
{
IUnityContainer Container { get; }
}
}

2. 基于演示的需要，创建ILogger接口 – ILogger.cs

namespace Microsoft.Practices.Unity.Tests.TestObjects
{
// A dummy interface to support testing type mapping
interface ILogger
{

}
}

3. 创建ILooger接口的实现类 WebLogger.cs

namespace Microsoft.Practices.Unity.Tests.TestObjects
{
// A dummy class to support testing type mapping
public class WebLogger : ILogger
{
}
}

4. 创建 ASP.NET Global.ascx

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.SessionState;
using Microsoft.Practices.Unity;
using Microsoft.Practices.Unity.Tests.TestObjects;

namespace UnityASPNET
{
public class Global : System.Web.HttpApplication, IUnity
{
private static UnityContainer _container; // private 静态成员变量

public static IUnityContainer Container // public 静态成员变量 Container
{
get { return _container; }
}

IUnityContainer IUnity.Container // 实现 IUnity 接口，返回 Continer 对象
{
get { return Container; }
}

protected void Application_Start(object sender, EventArgs e)
{
Initialize();
}

private static void Initialize()
{
// create the container at the application initialization phase.
if (_container == null)
_container = new UnityContainer(); // 初始化静态成员变量 _container

// register type 注册 ILogger 映射
_container.RegisterType<ILogger, WebLogger>();
}
}
}

5. 在ASP.NET 页面调用 IUnityContainer 对象

protected void Page_Load(object sender, EventArgs e)
{
IUnity UnityCtx = Context.ApplicationInstance as IUnity;

// This should find the WebLogger when trying resolve the ILogger
ILogger logger = UnityCtx.Container.Resolve<ILogger>();

Label1.Text = "Found following ILogger from unity container : "+logger.GetType().FullName.ToString();

下载ASP.NET Web Application 源码！！！

Source URL:

http://www.codeplex.com/unitycontributions/Thread/View.aspx?ThreadId=27698 by alexanderQX.

附件:
UnityASPNETSample_VS2008.rar 148 KB, 下载 178 次.