7、生成器模式

7、生成器模式  一种的材料，不同生产者通过同样的加工步骤生成不同的产品 （指导者通过不同的加工步骤，又可以生成不同的产品）——构建复杂的产品， 产品构建和表现的分离
作用：程序结构松散、扩展更容易、复用性更好，代码更清晰、意图更明确

 

namespace SJ.DesignMode
{
    /// <summary>
    /// 设计模式
    /// </summary>
    class Program
    {
        static void Main(string[] args)
        {

 string title = "title";
            string body = "body";
            string footer = "footer";

            //IBuilder ibuilder = new TxtBuilder();
            IBuilder ibuilder = new Xmluilder();

            Builder builder = new Builder(ibuilder);
            string end = builder.Create(title, body, footer);
            Console.WriteLine(end);


  }
    }


  public class Builder
    {
        private IBuilder _builder;

        public Builder(IBuilder builder)
        {
            _builder = builder;
        }

        public string Create(string title, string body, string footer)
        {
            //生成器 执行同样的加工步骤
            _builder.Head(title);
            _builder.Body(body);
            _builder.Footer(footer);

            return _builder.GetEnd();
        }
    }

    public interface IBuilder
    {
        void Head(string head);
        void Body(string body);
        void Footer(string footer);

        string GetEnd();
    }

    public class TxtBuilder : IBuilder
    {
        private StringBuilder sb = new StringBuilder();
        public void Body(string body)
        {
            sb.Append("body /r/n");
        }

        public void Footer(string footer)
        {
            sb.Append("footer /r/n");
        }

        public string GetEnd()
        {
            return sb.ToString();
        }

        public void Head(string head)
        {
            sb.Append("head /r/n");
        }
    }

    public class Xmluilder : IBuilder
    {
        private StringBuilder sb = new StringBuilder();
        public void Body(string body)
        {
            sb.Append("<body> body </body> /r/n");
        }

        public void Footer(string footer)
        {
            sb.Append("<Footer> footer </Footer> /r/n");
        }
        public string GetEnd()
        {
            return sb.ToString();
        }

        public void Head(string head)
        {
            sb.Append("<Head> head </Head> /r/n");
        }
    }
}

　　

posted @ 2021-12-21 14:21  二维一加零  阅读(53)  评论(0)    收藏  举报