DI 依赖注入之unity的MVC版本使用Microsoft.Practices.Unity1.2与2.0版本对比
参考：https://www.cnblogs.com/xishuai/p/3670292.html
必读：
在unity1.2中我们使用构造器注入、属性注入和方法注入会有parameterType节点，就是说在constructor、property和method这些节点可以配置这些方式注入所依赖的类型，但是在unity2.0并不存在parameterType节点了，所有类型注册都是通过register节点进行配置的，相当于unity1.2中的type节点，虽然unity2.0存在constructor、property和method节点，但我感觉只是针对构造器、属性和方法本身进行注入。另外在unity2.0配置中alias节点下的生命管理周期配置并不需要了。
一.下载安装：
Microsoft.Practices.Unity.dll
Microsoft.Practices.Unity.Configuration.dll
下载地址：
二.配置：
1.在App_Start文件夹下创建UnityConfig.cs文件
using Microsoft.Practices.Unity;
using Microsoft.Practices.Unity.Configuration;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using ZLP.BLL;
using ZLP.DAL;
using ZLP.IBLL;
using ZLP.IDAL;
using ZLP.MVC.Controllers;
namespace ZLP.MVC
{
public class UnityConfig
{
public static void RegisterComponents()
{
var container = new UnityContainer();
//代码注入
// container.RegisterType<IUserDAL, UserDAL>();
//container.RegisterType<IUserBLL, UserBLL>();
//配置文件注入
var section=(UnityConfigurationSection)ConfigurationManager.GetSection(UnityConfigurationSection.SectionName);
section.Configure(container);
DependencyResolver.SetResolver(new ZLPDependencyResolver(container));
}
}
}
2.在App_Start文件夹下创建ZLPDependencyResolver.cs文件（创建一个实现IDependencyResolver的类）
using Microsoft.Practices.Unity;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
namespace ZLP.MVC
{
public class ZLPDependencyResolver : IDependencyResolver
{
public ZLPDependencyResolver(IUnityContainer container)
{
this.container = container;
}
IUnityContainer container;
public object GetService(Type serviceType)
{
try
{
return this.container.Resolve(serviceType);
}
catch (Exception)
{
return null;
}
}
public IEnumerable<object> GetServices(Type serviceType)
{
try
{
return this.container.ResolveAll(serviceType);
}
catch (Exception)
{
return Enumerable.Empty<object>();
}
}
}
}
3.在Global文件中Application_Start方法中增加一行代码
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Optimization;
using System.Web.Routing;
namespace ZLP.MVC
{
public class MvcApplication : System.Web.HttpApplication
{
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
UnityConfig.RegisterComponents();//增加unity的方法调用
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Optimization;
using System.Web.Routing;
namespace ZLP.MVC
{
public class MvcApplication : System.Web.HttpApplication
{
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
UnityConfig.RegisterComponents();//增加unity的方法调用
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Optimization;
using System.Web.Routing;
namespace ZLP.MVC
{
public class MvcApplication : System.Web.HttpApplication
{
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
UnityConfig.RegisterComponents();//增加unity的方法调用
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
}
}
}
三.配置文件：
版本：1.2
1.2中的节点：
<configSections>
<section name="unity" type="Microsoft.Practices.Unity.Configuration.UnityConfigurationSection, Microsoft.Practices.Unity.Configuration"/>
</configSections>
<unity>
<typeAliases>
<typeAlias alias="IUserBLL" type="ZLP.IBLL.IUserBLL,ZLP.IBLL" />
<typeAlias alias="UserBLL" type="ZLP.BLL.UserBLL,ZLP.BLL" />
</typeAliases>
<containers>
<container name="defaultContainer">
<type type="IUserBLL" mapTo="UserBLL" name="a"></type >
</container>
</containers>
</unity>
版本：2.0
2.0中节点变更为如下：
- The <unity> Configuration Section
- The <container> Element
- The <register> Element
- The <lifetime> Element
- The <constructor> Element
- The <property> Element
- The <method> Element
- The <param> Element
- The <dependency> Element
- The <value> Element
- The <optional> Element
- The <array> Element
- The <extension> Element
- The <instance> Element
- The <namespace > Element
- The <alias> Element
- The <sectionExtension> Element
-
-
<configSections> <section name="unity" type="Microsoft.Practices.Unity.Configuration.UnityConfigurationSection, Microsoft.Practices.Unity.Configuration" /> </configSections> <unity> <alias alias="IUserDAL" type="ZLP.IDAL.IUserDAL,ZLP.IDAL" /> <alias alias="UserDAL" type="ZLP.DAL.UserDAL,ZLP.DAL" /> <alias alias="IUserBLL" type="ZLP.IBLL.IUserBLL,ZLP.IBLL" /> <alias alias="UserBLL" type="ZLP.BLL.UserBLL,ZLP.BLL" /> <container> <register type="IUserDAL" mapTo="UserDAL"></register> <register type="IUserBLL" mapTo="UserBLL"></register> </container> </unity>
-
- 详细的查看官方地址：https://docs.microsoft.com/en-us/previous-versions/msp-n-p/ff660914(v=pandp.20)?redirectedfrom=MSDN#config_registerelement
原文地址：https://www.cnblogs.com/zlp520/p/12020153.html
时间： 2024-11-13 19:31:21