enterprise library 5 unity使用方法

通过使用unity容器,从配置文件里读取配置,解析出一个接口的实现,或在程序里指定一个接口的实现:

1、先建一个项目,名字为ClassLibrary,里面有ILogger.cs Logger.cs

Logger.cs:

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

namespace ClassLibrary
{
  public class TextLogger : ILogger
  {
    public void Log(string str)
    {
      Console.WriteLine(str + ":TextLogger.Log()");
    }
  }

  public class DBLogger : ILogger
  {
    public void Log(string str)
    {
      Console.WriteLine(str + ":DBLogger.Log()");
    }
  }

}

 

ILogger.cs:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ClassLibrary
{
  public interface ILogger
  {
    void Log(string str);
  }
}

 

Main.cs:

public static void Main()
{

  IUnityContainer c = new UnityContainer();
  c.LoadConfiguration();
  c.Resolve<ILogger>().Log("abbbbb");//从默认注册里取,见配置文件的Container>>Register节点
  c.Resolve<ILogger>("special").Log("abbbbb");//从name为special的注册里取,见配置文件的Container>>Register节点
  return;

  using (IUnityContainer container = new UnityContainer())
  {

    container.RegisterType<ILogger, TextLogger>();
    container.RegisterType<ILogger, TextLogger>("text");
    container.RegisterType<ILogger, DBLogger>("db");


    container.Resolve<ILogger>().Log("abc");
    IEnumerable<ILogger> i = container.ResolveAll<ILogger>();

    foreach (ILogger l in i) {
      l.Log("lllll");
    }

  }

}

 

配置文件:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="unity" type="Microsoft.Practices.Unity.Configuration.UnityConfigurationSection, Microsoft.Practices.Unity.Configuration"/>
  </configSections>

  <unity xmlns="http://schemas.microsoft.com/practices/2010/unity">
    <alias alias="ILogger" type="ClassLibrary.ILogger, ClassLibrary" /><!--这一行可选,可不要-->
    <namespace name="ClassLibrary" />
    <assembly name="ClassLibrary, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" />

    <container>
      <register type="ILogger" mapTo="DBLogger" />
      <register type="ILogger" name="special" mapTo="TextLogger" />
    </container>

  </unity>
</configuration>

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