Mikel
来源： MyBatis.Net 学习手记 – 菩提树下的杨过 – 博客园
MyBatis.NET的前身为IBatis，是JAVA版MyBatis在.NET平台上的翻版，相对NHibernate、EntityFramework等重量级ORM框架而言，MyBatis.NET必须由开发人员手动写SQL，相对灵活性更大，更容易保证DB访问的性能，适用开发团队里有SQL熟手的场景。
下面是使用步骤：
1、到官网http://code.google.com/p/mybatisnet/ 下载相关dll和文档
Doc-DataAccess-1.9.2.zip
Doc-DataMapper-1.6.2.zip
IBatis.DataAccess.1.9.2.bin.zip
IBatis.DataMapper.1.6.2.bin.zip
一共有4个zip包
2、创建一个Web应用，参考下图添加程序集引用
3、修改web.config，主要是配置log4net，参考下面的内容：
1 <?xml version="1.0"?>
2 <configuration>
3 <configSections>
4 <sectionGroup name="iBATIS">
5 <section name="logging" type="IBatisNet.Common.Logging.ConfigurationSectionHandler, IBatisNet.Common"/>
6 </sectionGroup>
7 <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
8 </configSections>
9 <system.web>
10 <compilation debug="true" targetFramework="4.0"/>
11 </system.web>
12 <iBATIS>
13 <logging>
14 <logFactoryAdapter type="IBatisNet.Common.Logging.Impl.Log4NetLoggerFA, IBatisNet.Common.Logging.Log4Net">
15 <arg key="configType" value="inline"/>
16 <arg key="showLogName" value="true"/>
17 <arg key="showDataTime" value="true"/>
18 <arg key="level" value="ALL"/>
19 <arg key="dateTimeFormat" value="yyyy/MM/dd HH:mm:ss:SSS"/>
20 </logFactoryAdapter>
21 </logging>
22 </iBATIS>
23 <log4net>
24 <!-- Define some output appenders -->
25 <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
26 <param name="File" value="mybatis.log"/>
27 <param name="AppendToFile" value="true"/>
28 <param name="MaxSizeRollBackups" value="2"/>
29 <param name="MaximumFileSize" value="100KB"/>
30 <param name="RollingStyle" value="Size"/>
31 <param name="StaticLogFileName" value="true"/>
32 <layout type="log4net.Layout.PatternLayout">
33 <param name="Header" value="[Header]\r\n"/>
34 <param name="Footer" value="[Footer]\r\n"/>
35 <param name="ConversionPattern" value="%d [%t] %-5p %c [%x] - %m%n"/>
36 </layout>
37 </appender>
38 <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
39 <layout type="log4net.Layout.PatternLayout">
40 <param name="ConversionPattern" value="%d [%t] %-5p %c [%x] <%X{auth}> - %m%n"/>
41 </layout>
42 </appender>
43 <!-- Set root logger level to ERROR and its appenders -->
44 <root>
45 <level value="DEBUG"/>
46 <appender-ref ref="RollingLogFileAppender"/>
47 <appender-ref ref="ConsoleAppender"/>
48 </root>
49 <!-- Print only messages of level DEBUG or above in the packages -->
50 <logger name="IBatisNet.DataMapper.Configuration.Cache.CacheModel">
51 <level value="DEBUG"/>
52 </logger>
53 <logger name="IBatisNet.DataMapper.Configuration.Statements.PreparedStatementFactory">
54 <level value="DEBUG"/>
55 </logger>
56 <logger name="IBatisNet.DataMapper.LazyLoadList">
57 <level value="DEBUG"/>
58 </logger>
59 <logger name="IBatisNet.DataAccess.DaoSession">
60 <level value="DEBUG"/>
61 </logger>
62 <logger name="IBatisNet.DataMapper.SqlMapSession">
63 <level value="DEBUG"/>
64 </logger>
65 <logger name="IBatisNet.Common.Transaction.TransactionScope">
66 <level value="DEBUG"/>
67 </logger>
68 <logger name="IBatisNet.DataAccess.Configuration.DaoProxy">
69 <level value="DEBUG"/>
70 </logger>
71 </log4net>
72 </configuration>
4、添加Providers.config
把从官方下载的压缩包解开，就能找到providers.config文件，里面定义了MyBatis.Net支持的各种数据库驱动，本例以oracle为例，把其它不用的db provider全删掉，只保留下oracleClient1.0，同时把enabled属性设置成true，参考下面这样：
1 <?xml version="1.0"?> 2 <providers xmlns="http://ibatis.apache.org/providers" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> 4 5 <clear/> 6 7 <!--Oracle Support--> 8 <provider 9 name="oracleClient1.0" 10 description="Oracle, Microsoft provider V1.0.5000.0" 11 enabled="true" 12 assemblyName="System.Data.OracleClient, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" connectionClass="System.Data.OracleClient.OracleConnection" 13 commandClass="System.Data.OracleClient.OracleCommand" 14 parameterClass="System.Data.OracleClient.OracleParameter" 15 parameterDbTypeClass="System.Data.OracleClient.OracleType" 16 parameterDbTypeProperty="OracleType" 17 dataAdapterClass="System.Data.OracleClient.OracleDataAdapter" 18 commandBuilderClass="System.Data.OracleClient.OracleCommandBuilder" 19 usePositionalParameters="false" 20 useParameterPrefixInSql="true" 21 useParameterPrefixInParameter="false" 22 parameterPrefix=":" 23 allowMARS="false" 24 /> 25 26 </providers>
把这个文件复制到Web项目根目录下
5、添加SqlMap.config，内容如下：
1 <?xml version="1.0" encoding="utf-8"?> 2 <sqlMapConfig xmlns="http://ibatis.apache.org/dataMapper" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> 4 5 <settings> 6 <setting useStatementNamespaces="false"/> 7 <setting cacheModelsEnabled="true"/> 8 </settings> 9 10 <!--db provider配置文件路径--> 11 <providers resource="providers.config"/> 12 13 <!--db provider类型及连接串--> 14 <database> 15 <provider name="oracleClient1.0" /> 16 <dataSource name="oracle" connectionString="Data Source=ORCL;Persist Security Info=True;User ID=scott;Password=tiger;Unicode=True" /> 17 </database> 18 19 <!--db与Entity的映射文件--> 20 <sqlMaps> 21 <sqlMap resource="Maps/ProductMap.xml"/> 22 </sqlMaps> 23 24 </sqlMapConfig>
这个文件也复制到Web项目根目录下，它的作用主要是指定db连接串，告诉系统providers.config在哪? 以及db与entity的映射文件在哪?（映射文件后面会讲到，这里先不管）
6、在Oraccle中先建表Product以及Sequence，方便接下来测试
1 -- CREATE TABLE 2 CREATE TABLE PRODUCT 3 ( 4 PRODUCTID NUMBER NOT NULL, 5 PRODUCTNAME VARCHAR2(100), 6 PRODUCTCOMPANY VARCHAR2(100), 7 SIGNDATE DATE, 8 UPDATEDATE DATE 9 ); 10 -- CREATE/RECREATE PRIMARY, UNIQUE AND FOREIGN KEY CONSTRAINTS 11 ALTER TABLE PRODUCT 12 ADD CONSTRAINT PK_PRODUCT_ID PRIMARY KEY (PRODUCTID); 13 14 -- CREATE SEQUENCE 15 CREATE SEQUENCE SQ_PRODUCT 16 MINVALUE 1 17 MAXVALUE 9999999999999999999999999 18 START WITH 1 19 INCREMENT BY 1 20 CACHE 20;
7、创建Maps目录，并在该目录下，添加映射文件ProductMap.xml，内容如下：
1 <?xml version="1.0" encoding="utf-8" ?> 2 <sqlMap namespace="EntityModel" xmlns="http://ibatis.apache.org/mapping" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> 4 5 <alias> 6 <!--类的别名--> 7 <typeAlias alias="Product" type="Web.Product,Web"/> 8 </alias> 9 10 <resultMaps> 11 <!--Product类与db表的映射--> 12 <resultMap id="SelectAllResult" class="Product"> 13 <result property="ProductId" column="ProductId"/> 14 <result property="ProductName" column="ProductName"/> 15 <result property="ProductCompany" column="ProductCompany" /> 16 <result property="SignDate" column="SignDate" /> 17 <result property="UpdateDate" column="UpdateDate" /> 18 </resultMap> 19 </resultMaps> 20 21 <statements> 22 23 <!--查询所有记录--> 24 <select id="SelectAllProduct" resultMap="SelectAllResult"> 25 <![CDATA[SELECT ProductId,ProductName,ProductCompany,SignDate,UpdateDate FROM Product]]> 26 </select> 27 28 <!--查询单条记录--> 29 <select id="SelectByProductId" parameterClass="int" resultMap="SelectAllResult" extends="SelectAllProduct"> 30 <![CDATA[ where ProductId = #value# ]]> 31 </select> 32 33 <!--插入新记录--> 34 <insert id="InsertProduct" parameterClass="Product"> 35 <!--oracle sequence的示例用法--> 36 <selectKey property="ProductId" type="pre" resultClass="int"> 37 select SQ_Product.nextval as ProductId from dual 38 </selectKey> 39 <![CDATA[INSERT into Product(ProductId,ProductCompany,ProductName,SignDate,UpdateDate) 40 VALUES(#ProductId#,#ProductCompany#, #ProductName# , #SignDate# , #UpdateDate#)]]> 41 </insert> 42 43 <!--更新单条记录--> 44 <update id="UpdateProduct" parameterClass="Product"> 45 <![CDATA[Update Product SET ProductName=#ProductName#, 46 ProductCompany=#ProductCompany#, 47 SignDate=#SignDate#, 48 UpdateDate=#UpdateDate# 49 Where ProductId=#ProductId#]]> 50 </update> 51 52 <!--根据主键删除单条记录--> 53 <delete id="DeleteProductById" parameterClass="int"> 54 <![CDATA[Delete From Product Where ProductId=#value#]]> 55 </delete> 56 57 58 </statements> 59 60 </sqlMap>
它的作用就是指定各种sql，以及db表与entity的映射规则，注意下insert中Sequence的用法！
8、创建实体类Product
1 using System;
2
3 namespace Web
4 {
5 public class Product
6 {
7 public int ProductId { get; set; }
8 public string ProductName { get; set; }
9 public string ProductCompany { get; set; }
10 public DateTime SignDate { get; set; }
11 public DateTime UpdateDate { get; set; }
12
13 public Product() { }
14 }
15 }
9、写一个通用的BaseDA类，对MyBatis.Net做些基本的封装
1 using IBatisNet.DataMapper;
2 using System.Collections.Generic;
3
4 namespace Web
5 {
6 public static class BaseDA
7 {
8 public static int Insert<T>(string statementName, T t)
9 {
10 ISqlMapper iSqlMapper = Mapper.Instance();
11 if (iSqlMapper != null)
12 {
13 return (int)iSqlMapper.Insert(statementName, t);
14 }
15 return 0;
16 }
17
18 public static int Update<T>(string statementName, T t)
19 {
20 ISqlMapper iSqlMapper = Mapper.Instance();
21 if (iSqlMapper != null)
22 {
23 return iSqlMapper.Update(statementName, t);
24 }
25 return 0;
26 }
27
28 public static int Delete(string statementName, int primaryKeyId)
29 {
30 ISqlMapper iSqlMapper = Mapper.Instance();
31 if (iSqlMapper != null)
32 {
33 return iSqlMapper.Delete(statementName, primaryKeyId);
34 }
35 return 0;
36 }
37
38 public static T Get<T>(string statementName, int primaryKeyId) where T : class
39 {
40 ISqlMapper iSqlMapper = Mapper.Instance();
41 if (iSqlMapper != null)
42 {
43 return iSqlMapper.QueryForObject<T>(statementName, primaryKeyId);
44 }
45 return null;
46 }
47
48 public static IList<T> QueryForList<T>(string statementName, object parameterObject = null)
49 {
50 ISqlMapper iSqlMapper = Mapper.Instance();
51 if (iSqlMapper != null)
52 {
53 return iSqlMapper.QueryForList<T>(statementName, parameterObject);
54 }
55 return null;
56 }
57 }
58 }
10、然后就可以在Default.aspx.cs上测试了，参考下面的代码：
using System;
using System.Web.UI;
namespace Web
{
public partial class Default : Page
{
protected void Page_Load(object sender, EventArgs e)
{
//插入
var insertProductId = BaseDA.Insert<Product>("InsertProduct", new Product()
{
ProductCompany = "INFOSKY",
ProductName = "iGSA2",
SignDate = DateTime.Now,
UpdateDate = DateTime.Now
});
//查单条记录
var model = BaseDA.Get<Product>("SelectByProductId", insertProductId);
ShowProduct(model);
Response.Write("<hr/>");
//修改记录
if (model != null)
{
model.ProductName = (new Random().Next(0, 99999999)).ToString().PadLeft(10, '0');
int updateResult = BaseDA.Update<Product>("UpdateProduct", model);
Response.Write("update影响行数:" + updateResult + "<br/><hr/>");
}
//查列表
var products = BaseDA.QueryForList<Product>("SelectAllProduct");
foreach (var pro in products)
{
ShowProduct(pro);
}
Response.Write("<hr/>");
//删除记录
int deleteResult = BaseDA.Delete("DeleteProductById", insertProductId);
Response.Write("delete影响行数:" + deleteResult + "<br/><hr/>");
}
void ShowProduct(Product pro)
{
if (pro == null) return;
Response.Write(string.Format("{0} , {1} , {2} , {3} , {4}<br/>",
pro.ProductId, pro.ProductName, pro.ProductCompany, pro.SignDate, pro.UpdateDate));
}
}
}
整个项目的目录结构如下：
