spring.net +dapper 打造简易的DataAccess 工具类.

 public class DBUtil
     {
         /// <summary>
         /// 数据库连接字符串
         /// </summary>
         private static string DataBase_Connection = System.Configuration.ConfigurationManager.ConnectionStrings["DNT"].ToString();

         /// <summary>
         /// 脚本文件存放路径
         /// </summary>
         private static string Data_File_Path = System.Configuration.ConfigurationManager.AppSettings["Data_File_Path"].ToString();

         /// <summary>
         /// 全局配置文件列表
         /// </summary>
         public static Dictionary<string, DataConfig> DataConfigList;

         /// <summary>
         /// 加载配置文件
         /// </summary>
         public static void InitConfig()
         {
             var filePath =  Path.Combine(AppDomain.CurrentDomain.BaseDirectory,Data_File_Path);

             DirectoryInfo TheFolder = new DirectoryInfo(filePath);
             foreach (FileInfo NextFile in TheFolder.GetFiles().Where(f=>f.Extension == ".config"))
             {
                 Spring.Context.Support.XmlApplicationContext context = new Spring.Context.Support.XmlApplicationContext(NextFile.FullName);
                 string[] fileNames = context.ObjectFactory.GetObjectDefinitionNames();

                 foreach (var fileName in fileNames)
                 {
                     var mObj = context.GetObject(fileName);

                     if (DataConfigList == null)
                     {
                         DataConfigList = new Dictionary<string, DataConfig>();
                     }

                     string keyName = NextFile.Name.Split('.')[].ToString() + "." + fileName;

                     if (!DataConfigList.ContainsKey(keyName))
                     {
                         DataConfigList.Add(keyName, mObj as DataConfig);
                     }
                     else
                     {
                         throw new ApplicationException("The existence of multiple identical configuration node,plseae check!");
                     }
                 }
             }

         }

         /// <summary>
         /// 获取指定名称SQL
         /// </summary>
         /// <param name="commandName"></param>
         /// <returns></returns>
         public static string GetSql(string commandName)
         {
             InitConfig();

             if (!DataConfigList.ContainsKey(commandName))
             {
                 throw new ApplicationException("Data file can't be found!");
             }
             else
             {
                 return DataConfigList[commandName].commandText;
             }

         }

         /// <summary>
         /// 获取数据库连接
         /// </summary>
         /// <returns></returns>
         public static SqlConnection GetConnection()
         {
             SqlConnection connection = new SqlConnection(DataBase_Connection);
             connection.Open();

             return connection;
         }

         /// <summary>
         /// 获取Command
         /// </summary>
         /// <param name="commandName"></param>
         /// <returns></returns>
         public static IDbCommand CreateCommand(string commandName)
         {
             var connection = GetConnection();

             using (IDbCommand command = connection.CreateCommand())
             {
                 command.CommandText = GetSql(commandName);
                 return command;
             }
         }

         /// <summary>
         /// 执行查询动作
         /// </summary>
         /// <typeparam name="T"></typeparam>
         /// <param name="command"></param>
         /// <param name="pars"></param>
         /// <returns></returns>
         public static List<T> Query<T>(string commandName, dynamic pars)
         {
             using (IDbCommand command = DBUtil.CreateCommand(commandName))
             {
                 return SqlMapper.Query<T>(command.Connection, command.CommandText, pars);
             }
         }
     }

SQL配置文件管理

• 支持多文件 (Order.config,  Item.config....), DBUtil 会在调用时加配置文件加入内存中缓存，待下次时候，直接读取内存数据.

 <?xml version="1.0" encoding="utf-8" ?>
 <objects xmlns="http://www.springframework.net"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://www.springframework.net
         http://www.springframework.net/xsd/spring-objects.xsd">
   <object id="GetOrderList" type="SpringDemo.DataConfig,SpringDemo">
     <property name="commandText">
       <value>
         <![CDATA[
            SELECT TOP(@Size) * FROM dbo.Order
          ]]>
       </value>
     </property>
   </object>

 <object id="GetOrderDetail" type="SpringDemo.DataConfig,SpringDemo">
     <property name="commandText">
       <value>
         <![CDATA[
            SELECT TOP(@Size) * FROM dbo.OrderDetail WHERE OrderID = @OrderID
          ]]>
       </value>
     </property>
   </object>
 </objects>

Demo代码

class Program
    {
        static void Main(string[] args)
        {
            List<Order> OrderList = GetOrderList();

            OrderList.ForEach(f =>
            {
                Console.WriteLine(f.OrderNumber);
            });

            Console.ReadLine();
        }

        public static List<Order> GetOrderLIST(int size)
        {
            return DBUtil.Query<Order>("Order.GetOrderList", new { Size = size }).ToList();
        }

       public static List<OrderDetail> GetOrderDetail(int size,int orderId)
        {
            return DBUtil.Query<OrderDetail>("Order.GetOrderDetail", new { Size = size,OrderID = orderId  }).ToList();
        }

}