spring与mybatis三种整合方法

本文主要介绍Spring与Mybatis三种常用整合方法，需要的整合架包是mybatis-spring.jar，可通过链接
http://code.google.com/p/mybatis/下载到。

1、采用数据映射器（MapperFactoryBean）的方式，不用写mybatis映射文件，采用注解方式提供相应的sql语句和输入参数。
（1）Spring配置文件：

Java代码

1. <!--引入jdbc配置文件-->
2. <context:property-placeholderlocation="jdbc.properties"/>
4. <!--创建jdbc数据源-->
5. <beanid="dataSource"class="org.apache.commons.dbcp.BasicDataSource"destroy-method="close">
6. <propertyname="driverClassName"value="${driver}"/>
7. <propertyname="url"value="${url}"/>
8. <propertyname="username"value="${username}"/>
9. <propertyname="password"value="${password}"/>
10. <propertyname="initialSize"value="${initialSize}"/>
11. <propertyname="maxActive"value="${maxActive}"/>
12. <propertyname="maxIdle"value="${maxIdle}"/>
13. <propertyname="minIdle"value="${minIdle}"/>
14. </bean>
16. <!--创建SqlSessionFactory，同时指定数据源-->
17. <beanid="sqlSessionFactory"class="org.mybatis.spring.SqlSessionFactoryBean">
18. <propertyname="dataSource"ref="dataSource"/>
19. </bean>
21. <!--创建数据映射器，数据映射器必须为接口-->
22. <beanid="userMapper"class="org.mybatis.spring.mapper.MapperFactoryBean">
23. <propertyname="mapperInterface"value="com.xxt.ibatis.dbcp.dao.UserMapper"/>
24. <propertyname="sqlSessionFactory"ref="sqlSessionFactory"/>
25. </bean>
27. <beanid="userDaoImpl2"class="com.xxt.ibatis.dbcp.dao.impl.UserDaoImpl2">
28. <propertyname="userMapper"ref="userMapper"/>
29. </bean>

<!-- 引入jdbc配置文件 --> <context:property-placeholder location="jdbc.properties"/> <!--创建jdbc数据源 --> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="${driver}"/> <property name="url" value="${url}"/> <property name="username" value="${username}"/> <property name="password" value="${password}"/> <property name="initialSize" value="${initialSize}"/> <property name="maxActive" value="${maxActive}"/> <property name="maxIdle" value="${maxIdle}"/> <property name="minIdle" value="${minIdle}"/> </bean> <!-- 创建SqlSessionFactory，同时指定数据源--> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> </bean> <!--创建数据映射器，数据映射器必须为接口--> <bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean"> <property name="mapperInterface" value="com.xxt.ibatis.dbcp.dao.UserMapper" /> <property name="sqlSessionFactory" ref="sqlSessionFactory" /> </bean> <bean id="userDaoImpl2" class="com.xxt.ibatis.dbcp.dao.impl.UserDaoImpl2"> <property name="userMapper" ref="userMapper"/> </bean>

（2）数据映射器UserMapper,代码如下:

Java代码

1. publicinterfaceUserMapper{
2. @Select("SELECT*FROMuserWHEREid=#{userId}")
3. UsergetUser(@Param("userId")longid);
4. }

public interface UserMapper { @Select("SELECT * FROM user WHERE id = #{userId}") User getUser(@Param("userId") long id); }

(3)dao接口类UserDao，代码如下：

Java代码

1. publicinterfaceUserDao{
2. publicUsergetUserById(Useruser);
3. }

public interface UserDao { public User getUserById(User user); }

(4)dao实现类UserDaoImpl2,，代码如下:

Java代码

1. publicclassUserDaoImpl2implementsUserDao{
2. privateUserMapperuserMapper;
4. publicvoidsetUserMapper(UserMapperuserMapper){
5. this.userMapper=userMapper;
6. }
8. publicUsergetUserById(Useruser){
9. returnuserMapper.getUser(user.getId());
10. }
11. }

public class UserDaoImpl2 implements UserDao { private UserMapper userMapper; public void setUserMapper(UserMapper userMapper) { this.userMapper = userMapper; } public User getUserById(User user) { return userMapper.getUser(user.getId()); } }

2、采用接口org.apache.ibatis.session.SqlSession的实现类org.mybatis.spring.SqlSessionTemplate。
mybatis中,sessionFactory可由SqlSessionFactoryBuilder.来创建。MyBatis-Spring中，使用了SqlSessionFactoryBean来替代。SqlSessionFactoryBean有一个必须属性dataSource，另外其还有一个通用属性configLocation（用来指定mybatis的xml配置文件路径）。
（1）Spring配置文件：

Xml代码

1. <!--创建SqlSessionFactory，同时指定数据源-->
2. lt;beanid="sqlSessionFactory"class="org.mybatis.spring.SqlSessionFactoryBean">
3. <propertyname="dataSource"ref="dataSource"/>
4. <!--指定sqlMapConfig总配置文件，订制的environment在spring容器中不在生效-->
5. <propertyname="configLocation"value="classpath:sqlMapConfig.xml"/>
6. <!--指定实体类映射文件，可以指定同时指定某一包以及子包下面的所有配置文件，mapperLocations和configLocation有一个即可，当需要为实体类指定别名时，可指定configLocation属性，再在mybatis总配置文件中采用mapper引入实体类映射文件-->
7. <!--<propertyname="mapperLocations"value="classpath*:com/xxt/ibatis/dbcp/**/*.xml"/>-->
8. lt;/bean>

<!-- 创建SqlSessionFactory，同时指定数据源--> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <!-- 指定sqlMapConfig总配置文件，订制的environment在spring容器中不在生效--> <property name="configLocation" value="classpath:sqlMapConfig.xml"/> <!--指定实体类映射文件，可以指定同时指定某一包以及子包下面的所有配置文件，mapperLocations和configLocation有一个即可，当需要为实体类指定别名时，可指定configLocation属性，再在mybatis总配置文件中采用mapper引入实体类映射文件 --> <!- - <property name="mapperLocations" value="classpath*:com/xxt/ibatis/dbcp/**/*.xml"/> --> </bean>

(2)mybatis总配置文件sqlMapConfig.xml：

Xml代码

1. <configuration>
2. <typeAliases>
3. <typeAliastype="com.xxt.ibatis.dbcp.domain.User"alias="User"/>
4. </typeAliases>
5. <mappers>
6. <mapperresource="com/xxt/ibatis/dbcp/domain/user.map.xml"/>
7. </mappers>
8. </configuration>

<configuration> <typeAliases> <typeAlias type="com.xxt.ibatis.dbcp.domain.User" alias="User" /> </typeAliases> <mappers> <mapper resource="com/xxt/ibatis/dbcp/domain/user.map.xml" /> </mappers> </configuration>

(3)实体类映射文件user.map.xml:

Java代码

1. <mappernamespace="com.xxt.ibatis.dbcp.domain.User">
2. <resultMaptype="User"id="userMap">
3. <idproperty="id"column="id"/>
4. <resultproperty="name"column="name"/>
5. <resultproperty="password"column="password"/>
6. <resultproperty="createTime"column="createtime"/>
7. </resultMap>
8. <selectid="getUser"parameterType="User"resultMap="userMap">
9. select*fromuserwhereid=#{id}
10. </select>
11. <mapper/>

<mapper namespace="com.xxt.ibatis.dbcp.domain.User"> <resultMap type="User" id="userMap"> <id property="id" column="id" /> <result property="name" column="name" /> <result property="password" column="password" /> <result property="createTime" column="createtime" /> </resultMap> <select id="getUser" parameterType="User" resultMap="userMap"> select * from user where id = #{id} </select> <mapper/>

(4)dao层接口实现类UserDaoImpl：

Java代码

1. publicclassUserDaoImplimplementsUserDao{
2. publicSqlSessionTemplatesqlSession;
3. publicUsergetUserById(Useruser){
4. return(User)sqlSession.selectOne("com.xxt.ibatis.dbcp.domain.User.getUser",user);
5. }
6. publicvoidsetSqlSession(SqlSessionTemplatesqlSession){
7. this.sqlSession=sqlSession;
8. }
9. }

public class UserDaoImpl implements UserDao { public SqlSessionTemplate sqlSession; public User getUserById(User user) { return (User)sqlSession.selectOne("com.xxt.ibatis.dbcp.domain.User.getUser", user); } public void setSqlSession(SqlSessionTemplate sqlSession) { this.sqlSession = sqlSession; } }

3、采用抽象类org.mybatis.spring.support.SqlSessionDaoSupport提供SqlSession。
(1)spring配置文件:

Java代码

1. <beanid="sqlSessionFactory"class="org.mybatis.spring.SqlSessionFactoryBean">
2. <propertyname="dataSource"ref="dataSource"/>
3. <propertyname="configLocation"value="classpath:sqlMapConfig.xml"/>
4. <!--<propertyname="mapperLocations"value="classpath*:com/xxt/ibatis/dbcp/domain/user.map.xml"/>-->
5. </bean>
7. <beanid="sqlSession"class="org.mybatis.spring.SqlSessionTemplate">
8. <constructor-argindex="0"ref="sqlSessionFactory"/>
9. </bean>
11. <beanid="userDaoImpl3"class="com.xxt.ibatis.dbcp.dao.impl.UserDaoImpl3">
12. <!--注入SqlSessionTemplate实例-->
13. <propertyname="sqlSessionTemplate"ref="sqlSession"/>
14. <!--也可直接注入SqlSessionFactory实例，二者都指定时，SqlSessionFactory失效-->
15. <!--<propertyname="sqlSessionFactory"ref="sqlSessionFactory"/>
16. -->
17. </bean>

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="configLocation" value="classpath:sqlMapConfig.xml"/> <!-- <property name="mapperLocations" value="classpath*:com/xxt/ibatis/dbcp/domain/user.map.xml"/ > --> </bean> <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate"> <constructor-arg index="0" ref="sqlSessionFactory" /> </bean> <bean id="userDaoImpl3" class="com.xxt.ibatis.dbcp.dao.impl.UserDaoImpl3"> <!--注入SqlSessionTemplate实例 --> <property name="sqlSessionTemplate" ref="sqlSession" /> <!--也可直接注入SqlSessionFactory实例，二者都指定时，SqlSessionFactory失效 --> <!-- <property name="sqlSessionFactory" ref="sqlSessionFactory" /> --> </bean>

(2)dao层接口实现类UserDaoImpl3：

Java代码

1. publicclassUserDaoImpl3extendsSqlSessionDaoSupportimplementsUserDao{
2. publicUsergetUserById(Useruser){
3. return(User)getSqlSession().selectOne("com.xxt.ibatis.dbcp.domain.User.getUser",user);
4. }
5. }