创建者模式

创建者模式

是一种复杂对象创建模式,它将客户端与包含多个组成部分的复杂对象的创建过程分离.客户无需知道复杂对象的内部组成部分与装配方式,只需要知道所需要建造者的类型即可.
建造模式关注如何逐步创建 一个复杂对象,不同的具体建造者定义了不同的创建过程,且具体建造者相互独立,更换建造者或增加新的建造非常方便,系统具有较好的扩展性.

//创建者模式
//是一种复杂对象创建模式,它将客户端与包含多个组成部分的复杂对象的创建过程分离.客户无需知道复杂对象的内部组成部分与装配方式,只需要知道所需要建造者的类型即可.
//建造模式关注如何逐步创建 一个复杂对象,不同的具体建造者定义了不同的创建过程,且具体建造者相互独立,更换建造者或增加新的建造非常方便,系统具有较好的扩展性.

//下面有两个盒子，一个涉及到对象的建造，后面一个是涉及对象建造的。

var builder = new Elephent();

builder.Close();


 class Elephent : Builder
{
    protected override void Step1()
    {
        Console.WriteLine("把冰箱门打开");
    }

    protected override void Step2()
    {
        Console.WriteLine("把大象装进冰箱");

    }

    protected override void Step3()
    {
        Console.WriteLine("把冰箱门关上");

    }
}
abstract class Builder
{
    protected abstract void Step1();
    protected abstract void Step2();
    protected abstract void Step3();
    public void Close()
    {
        Step1();
        Step2();
        Step3();
    }
}

下面涉及到对象的建造

//顶级语句




using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;


//IHost host = Host.CreateDefaultBuilder()
//    .ConfigureServices(services =>
//    {
//        services.AddSingleton<ActorController>();
//        services.AddSingleton<ActorBuilder, HeroBuilder>();
//        // services.AddSingleton<ActorBuilder, AngeBuilder>();

//        services.AddSingleton<Actor>();
//    })
//    .Build();
//ActorController actorController= host.Services.GetRequiredService<ActorController>();
//var actor=actorController.Bluid();

IServiceCollection services = new ServiceCollection();
services.AddSingleton<ActorBuilder, AngeBuilder>();
services.AddSingleton<ActorController>();
services.AddSingleton<Actor>();

ServiceProvider serviceProvider = services.BuildServiceProvider();

ActorController actorController = serviceProvider.GetRequiredService<ActorController>();
var actor = actorController.Bluid();



Console.WriteLine($"角色:{actor.type}");
Console.WriteLine($"性别:{actor.Sex}");
Console.WriteLine($"面容:{actor.Face}");
Console.WriteLine($"服装:{actor.Costume}");
Console.WriteLine($"发型:{actor.Hairstyle}");


/// <summary>
/// 英雄角色建造者
/// </summary>
class HeroBuilder : ActorBuilder
{
    public HeroBuilder(Actor actor) : base(actor)
    {
    }

    public override void BuilderCostume()
    {
        _actor.type = "英雄";
    }

    public override void BuilderFace()
    {
        _actor.Sex = "男";
    }

    public override void BuilderHairstyle()
    {
        _actor.Face = "英俊";
    }

    public override void BuilderSex()
    {
        _actor.Costume = "盔甲";
    }

    public override void BuilderType()
    {
        _actor.Hairstyle = "飘逸";
    }
}

/// <summary>
/// 天使角色建造者
/// </summary>
class AngeBuilder : ActorBuilder
{
    public AngeBuilder(Actor actor) : base(actor)
    {
    }

    public override void BuilderCostume()
    {
        _actor.type = "天使";
    }

    public override void BuilderFace()
    {
        _actor.Sex = "女";
    }

    public override void BuilderHairstyle()
    {
        _actor.Face = "漂亮";
    }

    public override void BuilderSex()
    {
        _actor.Costume = "白袍";
    }

    public override void BuilderType()
    {
        _actor.Hairstyle = "披肩长发";
    }


}

public class Actor
{
    /// <summary>
    /// 角色类型
    /// </summary>
    public string type { get; set; }
    /// <summary>
    /// 性别
    /// </summary>
    public string Sex { get; set; }
    /// <summary>
    /// 面容
    /// </summary>
    public string Face { get; set; }
    //服装
    public string Costume { get; set; }
    /// <summary>
    /// 发型
    /// </summary>
    public string Hairstyle { get; set; }

}

abstract class ActorBuilder
{
    protected Actor _actor;
    protected ActorBuilder(Actor actor)
    {
        _actor = actor;
    }
    abstract public void BuilderType();
    abstract public void BuilderSex();
    abstract public void BuilderFace();
    abstract public void BuilderCostume();
    abstract public void BuilderHairstyle();

    public Actor CreateActor()
    {
        return _actor;
    }
}

class ActorController
{
    private readonly ActorBuilder _builder;

    public ActorController(ActorBuilder actorBuilder)
    {
        _builder = actorBuilder;

    }
    public Actor Bluid()
    {
        _builder.BuilderType();
        _builder.BuilderSex();
        _builder.BuilderFace();
        _builder.BuilderCostume();
        _builder.BuilderHairstyle();
        return _builder.CreateActor();
    }
}