SprignMVC+myBatis整合(二)——基于SqlSessionTemplate

奇忠诚

　　上一节SpringMVC+myBatis的整合还可以利用SqlSessionTemplate组件来实现。
　　关于Mapper接口，要求不能重复，参数只能有一个，多个参数使用只对象，查询才有返回值。
　　所有Mapper接口不是DAO，没有DAO灵活方便。所有这里可以用SqlSessionTemplate来操作，把该组件对象注入给DAO，在DAO中利用SqlSessionTemplate编程。
　　基本方法如下：
　　步骤一：编写DAO接口。该接口中方法可以随便定义，不受beanXXX.xml中SQL id的影响。

public interface DeptDao {
public List<Dept> findAllDept();
void addDept(Dept dept);
void deleteDept(Dept dept);
Dept findDeptById(int id);
void updateDept(Dept dept);
List<Dept> findDeptByLoc(String loc);
}
　　步骤二：编写实现类

@Repository
public class OracleDeptDao implements DeptDao {
@Resource  // 注入SqlSessionTemplate对象
private SqlSessionTemplate template;
public List<Dept> findAllDept() {
List<Dept> list = template.selectList("findAllDept");
return list;
}
public void addDept(Dept dept) {
template.insert("addDept", dept);
}
public void deleteDept(Dept dept) {
template.delete("deleteDept", dept);
}
public Dept findDeptById(int id) {
return template.selectOne("findDeptById",id);
}
public List<Dept> findDeptByLoc(String loc) {
return template.selectList("findDeptByLoc", loc);
}
public void updateDept(Dept dept) {
template.update("updateDept", dept);
}
public void setTemplate(SqlSessionTemplate template) {
this.template = template;
}
public SqlSessionTemplate getTemplate() {
return template;
}
　　修改配置文件：

<?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:jdbc="http://www.springframework.org/schema/jdbc" xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xmlns:util="http://www.springframework.org/schema/util" xmlns:mvc="http://www.springframework.org/schema/mvc"
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/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.2.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.2.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.2.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
<context:component-scan base-package="com.lydia" />
<!-- 支持@RequestMapping请求和Controller映射 -->
<mvc:annotation-driven />
<bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="oracle.jdbc.OracleDriver" />
<property name="url" value="jdbc:oracle:thin:@localhost:1521:XE" />
<property name="username" value="jsd1403" />
<property name="password" value="root" />
</bean>
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="myDataSource" />
<property name="mapperLocations" value="classpath:com/lydia/entity/*.xml" />
</bean>
<!-- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
<!-- 定义SqlSessionTemplate -->
<bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg index="0" ref="sqlSessionFactory"></constructor-arg>
</bean>
<!-- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
<!-- 可以把扫描到的Mapper接口变成Mapper对象  -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.lydia" />
<property name="annotationClass" value="com.lydia.annotation.MyBatisRepository" />
</bean>
<!-- 视图解析器 -->
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/jsp/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
</beans>