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

2024-07-08 13:02:38   215人阅读

  1 public class DBUtil  2     {  3         /// <summary>  4         /// 数据库连接字符串  5         /// </summary>  6         private static string DataBase_Connection = System.Configuration.ConfigurationManager.ConnectionStrings["DNT"].ToString();  7   8         /// <summary>  9         /// 脚本文件存放路径 10         /// </summary> 11         private static string Data_File_Path = System.Configuration.ConfigurationManager.AppSettings["Data_File_Path"].ToString(); 12  13         /// <summary> 14         /// 全局配置文件列表 15         /// </summary> 16         public static Dictionary<string, DataConfig> DataConfigList; 17  18         /// <summary> 19         /// 加载配置文件 20         /// </summary> 21         public static void InitConfig() 22         { 23             var filePath =  Path.Combine(AppDomain.CurrentDomain.BaseDirectory,Data_File_Path); 24  25             DirectoryInfo TheFolder = new DirectoryInfo(filePath); 26             foreach (FileInfo NextFile in TheFolder.GetFiles().Where(f=>f.Extension == ".config")) 27             { 28                 Spring.Context.Support.XmlApplicationContext context = new Spring.Context.Support.XmlApplicationContext(NextFile.FullName); 29                 string[] fileNames = context.ObjectFactory.GetObjectDefinitionNames(); 30  31                 foreach (var fileName in fileNames) 32                 { 33                     var mObj = context.GetObject(fileName); 34  35                     if (DataConfigList == null) 36                     { 37                         DataConfigList = new Dictionary<string, DataConfig>(); 38                     } 39  40                     string keyName = NextFile.Name.Split(‘.‘)[0].ToString() + "." + fileName; 41  42                     if (!DataConfigList.ContainsKey(keyName)) 43                     { 44                         DataConfigList.Add(keyName, mObj as DataConfig); 45                     } 46                     else 47                     { 48                         throw new ApplicationException("The existence of multiple identical configuration node,plseae check!"); 49                     } 50                 } 51             } 52              53         } 54  55         /// <summary> 56         /// 获取指定名称SQL 57         /// </summary> 58         /// <param name="commandName"></param> 59         /// <returns></returns> 60         public static string GetSql(string commandName) 61         { 62             InitConfig(); 63  64             if (!DataConfigList.ContainsKey(commandName)) 65             { 66                 throw new ApplicationException("Data file can‘t be found!"); 67             } 68             else 69             { 70                 return DataConfigList[commandName].commandText; 71             } 72  73         } 74  75         /// <summary> 76         /// 获取数据库连接 77         /// </summary> 78         /// <returns></returns> 79         public static SqlConnection GetConnection() 80         { 81             SqlConnection connection = new SqlConnection(DataBase_Connection); 82             connection.Open(); 83  84             return connection; 85         } 86  87         /// <summary> 88         /// 获取Command 89         /// </summary> 90         /// <param name="commandName"></param> 91         /// <returns></returns> 92         public static IDbCommand CreateCommand(string commandName) 93         { 94             var connection = GetConnection(); 95  96             using (IDbCommand command = connection.CreateCommand()) 97             { 98                 command.CommandText = GetSql(commandName); 99                 return command;100             }101         }102 103         /// <summary>104         /// 执行查询动作105         /// </summary>106         /// <typeparam name="T"></typeparam>107         /// <param name="command"></param>108         /// <param name="pars"></param>109         /// <returns></returns>110         public static List<T> Query<T>(string commandName, dynamic pars)111         {112             using (IDbCommand command = DBUtil.CreateCommand(commandName))113             {114                 return SqlMapper.Query<T>(command.Connection, command.CommandText, pars);115             }116         }117     }

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.
 1 <?xml version="1.0" encoding="utf-8" ?> 2 <objects xmlns="http://www.springframework.net" 3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4     xsi:schemaLocation="http://www.springframework.net 5         http://www.springframework.net/xsd/spring-objects.xsd"> 6   <object id="GetOrderList" type="SpringDemo.DataConfig,SpringDemo"> 7     <property name="commandText"> 8       <value> 9         <![CDATA[10            SELECT TOP(@Size) * FROM dbo.Order11          ]]>12       </value>13     </property>14   </object>15 16 <object id="GetOrderDetail" type="SpringDemo.DataConfig,SpringDemo">17     <property name="commandText">18       <value>19         <![CDATA[20            SELECT TOP(@Size) * FROM dbo.OrderDetail WHERE OrderID = @OrderID21          ]]>22       </value>23     </property>24   </object>25 </objects>

 

Demo代码

class Program    {        static void Main(string[] args)        {            List<Order> OrderList = GetOrderList(1000);            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();        }
}

 


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