依赖注入框架Autofac的简单使用，以及在 ASP.NET MVC 中的使用

Autofac 基础

转载自：/article/4758622.html

Autofac是一款IOC框架，比较于其他的IOC框架，如Spring.NET，Unity，Castle等等所包含的，它很轻量级性能上也是很高的。于是，今天抽空研究了下它。下载地址：http://code.google.com/p/autofac/downloads/list

代码：

using System;
using Autofac;
using Autofac.Configuration;

namespace DearBruce.AutofacDemo.ConsoleApp
{
class Program
{
static void Main(string[] args)
{
#region Demo1 - 硬编码注册

//var builder = new ContainerBuilder();
//builder.RegisterType<DatabaseManager>();
//builder.RegisterType<SqlDatabase>().As<IDatabase>();
//using (var container = builder.Build())
//{
//    var manager = container.Resolve<DatabaseManager>();
//    manager.Search("SELECT * FORM USER");
//}

#endregion

#region Demo2 - 读取配置文件

//var builder = new ContainerBuilder();
//builder.RegisterType<DatabaseManager>();
//builder.RegisterModule(new ConfigurationSettingsReader("autofac"));
//using (var container = builder.Build())
//{
//    var manager = container.Resolve<DatabaseManager>();
//    manager.Search("SELECT * FORM USER");
//}

#endregion

#region Demo2 - 通过 Register 方法进行注册

var builder = new ContainerBuilder();
//builder.RegisterType<DatabaseManager>();
builder.RegisterModule(new ConfigurationSettingsReader("autofac"));
builder.Register(c => new DatabaseManager(c.Resolve<IDatabase>()));
using (var container = builder.Build())
{
var manager = container.Resolve<DatabaseManager>();
manager.Search("SELECT * FORM USER");
}

#endregion
}
}

/// <summary>
/// Database operate interface
/// </summary>
public interface IDatabase
{
string Name { get; }

void Select(string commandText);

void Insert(string commandText);

void Update(string commandText);

void Delete(string commandText);
}

public class SqlDatabase : IDatabase
{
public string Name
{
get { return "sqlserver"; }
}

public void Select(string commandText)
{
Console.WriteLine(string.Format("'{0}' is a query sql in {1}!", commandText, Name));
}

public void Insert(string commandText)
{
Console.WriteLine(string.Format("'{0}' is a insert sql in {1}!", commandText, Name));
}

public void Update(string commandText)
{
Console.WriteLine(string.Format("'{0}' is a update sql in {1}!", commandText, Name));
}

public void Delete(string commandText)
{
Console.WriteLine(string.Format("'{0}' is a delete sql in {1}!", commandText, Name));
}
}

public class OracleDatabase : IDatabase
{
public string Name
{
get { return "oracle"; }
}

public void Select(string commandText)
{
Console.WriteLine(string.Format("'{0}' is a query sql in {1}!", commandText, Name));
}

public void Insert(string commandText)
{
Console.WriteLine(string.Format("'{0}' is a insert sql in {1}!", commandText, Name));
}

public void Update(string commandText)
{
Console.WriteLine(string.Format("'{0}' is a update sql in {1}!", commandText, Name));
}

public void Delete(string commandText)
{
Console.WriteLine(string.Format("'{0}' is a delete sql in {1}!", commandText, Name));
}
}

public class DatabaseManager
{
IDatabase _database;

public DatabaseManager(IDatabase database)
{
_database = database;
}

public void Search(string commandText)
{
_database.Select(commandText);
}

public void Add(string commandText)
{
_database.Insert(commandText);
}

public void Save(string commandText)
{
_database.Update(commandText);
}

public void Remove(string commandText)
{
_database.Delete(commandText);
}

}
}

Demo 下载： http://files.cnblogs.com/Music/AutofacDemo.rar

Autofac 在 ASP.NET MVC 下的注册

请参考下面的代码，来自于 https://github.com/MarlabsInc/SocialGoal/

using System.Web.Mvc;
using Autofac;
using Autofac.Integration.Mvc;
using System.Reflection;
using SocialGoal.Data.Repository;
using SocialGoal.Data.Infrastructure;
using SocialGoal.Service;
using SocialGoal.Mappings;
using SocialGoal.Web.Core.Authentication;
using Microsoft.AspNet.Identity.EntityFramework;
using SocialGoal.Model.Models;
using SocialGoal.Data.Models;
using Microsoft.AspNet.Identity;

namespace SocialGoal
{
public static class Bootstrapper
{
public static void Run()
{
SetAutofacContainer();
//Configure AutoMapper
AutoMapperConfiguration.Configure();
}
private static void SetAutofacContainer()
{
var builder = new ContainerBuilder();
builder.RegisterControllers(Assembly.GetExecutingAssembly());
builder.RegisterType<UnitOfWork>().As<IUnitOfWork>().InstancePerHttpRequest();
builder.RegisterType<DatabaseFactory>().As<IDatabaseFactory>().InstancePerHttpRequest();
builder.RegisterAssemblyTypes(typeof(FocusRepository).Assembly)
.Where(t => t.Name.EndsWith("Repository"))
.AsImplementedInterfaces().InstancePerHttpRequest();
builder.RegisterAssemblyTypes(typeof(GoalService).Assembly)
.Where(t => t.Name.EndsWith("Service"))
.AsImplementedInterfaces().InstancePerHttpRequest();

builder.RegisterAssemblyTypes(typeof(DefaultFormsAuthentication).Assembly)
.Where(t => t.Name.EndsWith("Authentication"))
.AsImplementedInterfaces().InstancePerHttpRequest();

builder.Register(c => new UserManager<ApplicationUser>(new UserStore<ApplicationUser>( new SocialGoalEntities())))
.As<UserManager<ApplicationUser>>().InstancePerHttpRequest();

builder.RegisterFilterProvider();
IContainer container = builder.Build();
DependencyResolver.SetResolver(new AutofacDependencyResolver(container));
}
}
}

谢谢浏览！