Spring3整合Mybatis
//@Alias("User")//设置别名，默认是类名
public class User {
private int id;
private String name;
private Date birthday;
private double salary;
//getter and setter
}
dao
/**
* 使用Mybatis实现持久层只要定义 Dao接口和xxxmapper.xml文件 就可以了，不需要编写实现类
* @author Monday
* @date 2013-9-5 上午11:57:51
* @version 1.0
*/
public interface UserMapper {
void save(User user);
void update(User user);
void delete(int id);
User findById(int id);
List<User> findAll();
}
xxxMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="org.monmday.springmybatis.mappers.UserMapper">
<resultMap type="User" id="userResult">
<result column="user_id" property="id"/>
<result column="user_name" property="name"/>
<result column="user_birthday" property="birthday"/>
<result column="user_salary" property="salary"/>
</resultMap>
<!-- 取得插入数据后的id -->
<!-- 方式1 -->
<!--
<insert id="save">
insert into t_user(user_name,user_birthday,user_salary)
values(#{name},#{birthday},#{salary})
<selectKey keyProperty="id" resultType="int">
select last_insert_id() as id
</selectKey>
</insert>
-->
<!-- 方式2 -->
<insert id="save" keyColumn="user_id" keyProperty="id" useGeneratedKeys="true">
insert into t_user(user_name,user_birthday,user_salary)
values(#{name},#{birthday},#{salary})
</insert>
<update id="update">
update t_user
set user_name = #{name},
user_birthday = #{birthday},
user_salary = #{salary}
where user_id = #{id}
</update>
<delete id="delete">
delete from t_user
where user_id = #{id}
</delete>
<select id="findById" resultMap="userResult">
select *
from t_user
where user_id = #{id}
</select>
<select id="findAll" resultMap="userResult">
select *
from t_user
</select>
</mapper>
下面是Spring3整合Mybatis的配置。
下面的配置只是方式之一，算是比较简介的配置吧。
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">
<!-- 属性文件 -->
<context:property-placeholder location="jdbc.properties"/>
<!-- 数据源 -->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"
p:driverClassName="${jdbc.driverClassName}"
p:url="${jdbc.url}"
p:username="${jdbc.username}"
p:password="${jdbc.password}"/>
<!-- sqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"
p:dataSource-ref="dataSource"
p:typeAliasesPackage="org.monmday.springmybatis.domian"/>
<!-- 配置要扫描的xxxMapper.xml -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"
p:basePackage="org.monmday.springmybatis.mappers"
p:sqlSessionFactoryBeanName="sqlSessionFactory"/>
<!-- 事务管理 -->
<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"
p:dataSource-ref="dataSource"/>
<tx:annotation-driven transaction-manager="txManager" />
</beans>
测试：
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("/beans.xml")
public class Main {
@Autowired
private UserMapper userMapper;
@Test
public void save() {
User user = new User();
user.setBirthday(new Date());
user.setName("marry");
user.setSalary(300);
userMapper.save(user);
System.out.println(user.getId());
}
@Test
public void update() {
User user = userMapper.findById(2);
user.setSalary(2000);
userMapper.update(user);
}
@Test
public void delete() {
userMapper.delete(3);
}
@Test
public void findById() {
User user = userMapper.findById(1);
System.out.println(user);
}
@Test
public void findAll() {
List<User> users = userMapper.findAll();
System.out.println(users);
}
}
其他代码在附件中。
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