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(实践篇)剖析最近项目使用的一个框架

本篇用到的纯理论知识在此,大抵是引用一些网友的博文:

http://www.cnblogs.com/jangwewe/archive/2013/03/22/2975012.html,理论过后,来看实战

前段时间完成了一个项目,照例过段时间应该总结一下,这里补上,

主要是关于系统架构的总结,这里记下作为以后参考:

1 先来看下系统的总体架构,如图

--------------------------------------

2 各层简要介绍:

bll:逻辑层

commonUtil 通用方法层(如处理字符串,excel导入到处,序列化等方法)

dal 数据层 

dbUtil层(主要是封装了访问数据库的一些操作)

dll  包含项目中引用的各种dll

entity 实体层,对应数据库中的每一张表

iterface 接口层,又分为ibll逻辑层接口,和idal数据层接口

web 展示层

-----------------------------------------

3 各层之间的引用关系:

web层,引用所有层

interface层,引用commonUtil,dbUtil,entity层

bll层,引用commonUtil,dbUtil,entity,dal,interface层

dal层,引用commonUtil,dbUtil,entity,interface层

------------------------------------------

4 以一个小例子来看各层展开之后,如图:

页面调用如下:

5 看完这个调用,估计你已经想到了,这里使用的是IOC依赖注入的方式来实现调用,

那么它又是怎么实现的呢,如下:

(1)首先在web.config里新增配置节:

 <configSections>
    <section name="unity" type="Microsoft.Practices.Unity.Configuration.UnityConfigurationSection, Microsoft.Practices.Unity.Configuration, Version=1.2.0.0, Culture=neutral, PublicKeyToken=4c5a798e9f2ad114"/>
  </configSections>
<unity configSource="Setting\Unity.config"   />

 

Unity.config是一个标准的xml文件,内容如下图:

(2)commonUitl里新增容器处理类:

 
public class UnityContainerAccessor
    {
 
        private static IUnityContainer logicUnityContainer = null;
        /// <summary>
        /// 获取逻辑层IoC容器
        /// </summary>
        public static IUnityContainer  LogicContainer
        {
            get
            {
                if (logicUnityContainer == null)
                {
 
                    IUnityContainer container = new UnityContainer();
                    UnityConfigurationSection section = (UnityConfigurationSection)ConfigurationManager.GetSection("unity");
                    section.Containers["LogicContainer"].Configure(container);
                    logicUnityContainer = container;
                }
                return logicUnityContainer;
            }
        }
 
 
        private static IUnityContainer daoUnityContainer = null;
        /// <summary>
        /// 获取DAO层IoC容器
        /// </summary>
        public static IUnityContainer DaoContainer
        {
            get
            {
                if (daoUnityContainer == null)
                {
 
                    IUnityContainer container = new UnityContainer();
                    UnityConfigurationSection section = (UnityConfigurationSection)ConfigurationManager.GetSection("unity");
                    section.Containers["DaoContainer"].Configure(container);
                    daoUnityContainer = container;
                }
                return daoUnityContainer;
            }
        }
 
 
    }

 



(3)bll层里实现如下,实例如下:
public class ExampleMethodBLL:MyStructOne.INTERFACE.BLL.IExampleBLL
    {
        private MyStructOne.INTERFACE.DAL.IExampleDAL  _DAL = null;
        private Database _dataBase;
 
 
        public Database dataBase
        {
            get { return _dataBase; }
            set
            {
                _dataBase = value;
                _DAL.dataBase = value;
            }
        }
 
 
        public ExampleMethodBLL()
        {
            _DAL = UnityContainerAccessor.DaoContainer.Resolve<MyStructOne.INTERFACE.DAL.IExampleDAL>();
            dataBase = DatabaseFactory.CreateDatabase(System.Configuration.ConfigurationManager.ConnectionStrings["ExampleConnectionKey"].ConnectionString);
                       
        }
 
       public DataTable ExampleMethod()
        {
            return _DAL.ExampleMethod();
        }
    }

 


 (4)dal层里则是具体的数据操作和实现:
 
class ExampleMethodDAL:MyStructOne.INTERFACE.DAL.IExampleDAL
    {
       private Database _dataBase;
 
 
        public Database dataBase
        {
            get { return _dataBase; }
            set
            {
                _dataBase = value;
                _dataBase = value;
            }
        }
 
 
        public ExampleMethodDAL()
        {
            
        }
 
         public DataTable ExampleMethod()
        {
            string strSql = @"select top(10) * from UM_MENU";
             return dataBase.ExecuteDataTable(strSql);
        }
 
    }

 



以上是抽取项目中的架构做的一个示例,留作参考之用!
posted @ 2013-04-01 17:08  流水刀客  阅读(206)  评论(0编辑  收藏  举报