依赖注入框架Autofac的简单使用

转载自：http://www.cnblogs.com/liping13599168/archive/2011/07/16/2108209.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： https://files.cnblogs.com/Music/AutofacDemo.rar