使用Spring.net中对Ado.net的抽象封装来访问数据库

使用Spring.net中对Ado.net的抽象封装来访问数据库

　    Spring.NET是一个应用程序框架，其目的是协助开发人员创建企业级的.NET应用程序。它提供了很多方面的功能，比如依赖注入、面向方面编程（AOP）、数据访问抽象及ASP.NET扩展等等。Spring.NET以Java版的Spring框架为基础，将Spring.Java的核心概念与思想移植到了.NET平台上。

要采用spring.net的数据访问抽象来访问sql server数据库，首先要引用spring.net的相应程序集spring.core,spring.data,common.Logging等，从 AdoDaoSupport 派生一个用于数据访问的类，然后项目的配置文件app.config中要添加相应的配置，然后就可以访问数据库了。

1.从 AdoDaoSupport 派生一个用于数据访问的类AdoDaoBase.cs

namespace AdoNetAccess
{
    public class AdoDaoBase:AdoDaoSupport
    {
        private string cmdText = @"select Address, City, CompanyName, ContactName, " +
                    "ContactTitle, Country, Fax, CustomerID, Phone, PostalCode, " +
                    "Region from Customers ";

        public DataTable GetCustomer()
        {
            return AdoTemplate.DataTableCreate(CommandType.Text, cmdText);
        }

    }
}

2.app.config要添加如下的配置：

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <sectionGroup name="common">
      <section name="logging" type="Common.Logging.ConfigurationSectionHandler, Common.Logging"/>
    </sectionGroup>
    <sectionGroup name="spring">
      <section name="parsers" type="Spring.Context.Support.NamespaceParsersSectionHandler, Spring.Core"/>
      <section name="context" type="Spring.Context.Support.ContextHandler, Spring.Core"/>
      <section name="objects" type="Spring.Context.Support.DefaultSectionHandler, Spring.Core"/>
    </sectionGroup>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
  </configSections>
  <common>
    <logging>
      <factoryAdapter type="Common.Logging.Log4Net.Log4NetLoggerFactoryAdapter, Common.Logging.Log4Net">
        <arg key="configType" value="INLINE"/>
      </factoryAdapter>
    </logging>
  </common>
  <log4net>
    <appender name="FileAppender" type="log4net.Appender.FileAppender">
      <file type="log4net.Util.PatternString" value="Logs\%date{yyyMMdd}.log"/>
      <appendToFile value="true"/>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date %-5level - %message%newline"/>
      </layout>
    </appender>
    <root>
      <level value="INFO"/>
      <appender-ref ref="FileAppender"/>
    </root>
    <logger name="Spring">
      <level value="WARN"/>
    </logger>
    <logger name="Clubank">
      <level value="DEBUG"/>
    </logger>
  </log4net>



  <spring>
    <parsers>
      <parser type="Spring.Data.Config.DatabaseNamespaceParser, Spring.Data"/>
    </parsers>

    <context>
      <resource uri="config://spring/objects"/> 
    </context>

    <objects xmlns="http://www.springframework.net" xmlns:db="http://www.springframework.net/database" xmlns:tx="http://www.springframework.net/tx">
      <db:provider id="dbProvider" provider="System.Data.SqlClient"  connectionString="Data Source=.SQLEXPRESS2005;Initial Catalog=Northwind;Persist Security Info=True;User ID=sa;Password=1234;Trusted_Connection=False"/>

      <object id="adoTemplate" type="Spring.Data.Core.AdoTemplate, Spring.Data">
        <property name="DbProvider" ref="dbProvider"/>
      </object>

      <!-- 查询定义 -->
      <object id="AdoDaoBase" type="AdoNetAccess.AdoDaoBase, AdoNetAccess">
        <!-- 注入 AdoTemplate -->
        <property name="AdoTemplate" ref="adoTemplate"/>
      </object>
    </objects>

  </spring>

</configuration>

3.测试访问数据库，Program.cs中的代码：

using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace AdoNetAccess
{
    class Program
    {
        static void Main(string[] args)
        {
            Spring.Context.IApplicationContext context = Spring.Context.Support.ContextRegistry.GetContext();
            Spring.Data.Common.IDbProvider provider = context.GetObject("dbProvider") as Spring.Data.Common.IDbProvider;
            Spring.Data.Core.AdoTemplate adoTemplate = context.GetObject("adoTemplate") as Spring.Data.Core.AdoTemplate;
            object result = adoTemplate.ExecuteScalar(System.Data.CommandType.Text, "select count(*) from Customers");

            AdoDaoBase dao = context.GetObject("AdoDaoBase") as AdoDaoBase;
            DataTable dt = dao.GetCustomer();

            Console.WriteLine();

        }
    }
}

上面是一个简单的示例，参考了很多的文章，有：

1. http://www.cnblogs.com/haogj/archive/2011/06/13/2079928.html
2. http://www.cnblogs.com/haogj/archive/2011/06/18/2084065.html
3. http://www.cnblogs.com/GoodHelper/archive/2009/11/20/SpringNet_blogs.html
4. http://www.cnblogs.com/heartstill/archive/2011/08/25/2153832.html
5. http://www.cnblogs.com/GoodHelper/archive/2009/11/20/SpringNet_Index.html
6. http://www.cnblogs.com/MyNameEPC/archive/2009/05/09/1453409.html

谢谢以上博客的博主。

 代码下载： SpringNET.rar