Mybatis和Spring框架整合，支持MyBatis的注解模式，Mysql

需要的jar包如下，直接引入项目的。 maven还不太会用



在 resources下新建两个xml配置文件：

applicationContext.xml：

<?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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"> <context:annotation-config/>

<context:component-scan base-package="net.trustie.db"/>

</beans>

applicationContext-myBatis.xml：

</pre><pre code_snippet_id="592772" snippet_file_name="blog_20150129_6_8493227" name="code" class="html"></pre><pre code_snippet_id="592772" snippet_file_name="blog_20150129_5_1789028" name="code" class="html"><pre name="code" class="html"><?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> 
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
</bean>

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="net.trustie.db" />
</bean>

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url"
value="jdbc:mysql://localhost:3306/db?characterEncoding=UTF-8" />
<property name="username" value="root" />
<property name="password" value="pwd" />
</bean>
</beans>

新建一个Interface：

public interface FlowDao {

@Insert("INSERT INTO ${targetTable} (${targetFields}) Select ${sourceFields} from ${sourceTable} where id > ${idBegin} and id < ${idEnd}")
public int moveData(@Param("sourceTable") String sourceTableName,@Param("targetTable") String targetTableName,
@Param("sourceFields") String sourceFields,@Param("targetFields") String targetFields,
@Param("idBegin")int idBegin,@Param("idEnd")int idEnd);

}

这个主要用于表的数据迁移的。

如何使用这个Dao呢？看下面的代码示例：

@Component
public class FlowDaoTest {

@Resource
private FlowDao flowDao;

public void test()
{
flowDao.moveData("posts","posts0","id,body","id,body",1,50);
}

public static void main(String[] args) {
ApplicationContext applicationContext = new ClassPathXmlApplicationContext(
"classpath:/spring/applicationContext*.xml");
final FlowDaoTest flowDaoTest= applicationContext
.getBean(FlowDaoTest.class);
flowDaoTest.test();
}
}

这个是可以正常运行的，结果是posts0表中id<50的数据被复制到post表中

在这个过程中，Spring和Mybatis框架会帮我们做好多工作，包括实例化接口，自动注入等。

目前我对框架理解程度还不够，水平仅限于简单应用。