UserDao:
public interface UserDao { public List<User> selectAll(); }
UserDaoImpl:让接口的实现类继承SqlSessionDaoSupport
public class UserDaoImpl extends SqlSessionDaoSupport implements UserDao{ @Override public List<User> selectAll() { return getSqlSession().selectList("cn.xst.vo.user.mapper.selectAll"); } }
User.mapper.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="cn.xst.vo.user.mapper"> <select id="selectAll" resultType="User"> select * from user </select> <insert id="add" parameterType="User" useGeneratedKeys="true"> insert into user(name,pwd) values(#{name},#{pwd}) </insert> <delete id="remove" > delete from user where id =#{id} </delete> </mapper>
Spring的IOC容器:beans.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:tx="http://www.springframework.org/schema/tx" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.1.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd"> <!-- 配置数据源 --> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver"></property> <property name="url" value="jdbc:mysql://127.0.0.1:3306/webservice"></property> <property name="username" value="root"></property> <property name="password" value="sorry"></property> </bean> <!-- 1.配置事物管理 --> <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"></property> </bean> <!-- 2.配置事物的通知 --> <tx:advice id="txadvice" transaction-manager="txManager"> <tx:attributes> <!-- 配置哪些方法使用什么样的事物,配置事物的传播特性 --> <tx:method name="add" propagation="REQUIRED" /> <tx:method name="update" propagation="REQUIRED" /> <tx:method name="delete" propagation="REQUIRED" /> <tx:method name="remove*" propagation="REQUIRED" /> <tx:method name="insert" propagation="REQUIRED" /> <tx:method name="get" read-only="true" /> <tx:method name="*" propagation="REQUIRED" /> </tx:attributes> </tx:advice> <!-- 3.配置事物的切面 --> <aop:config> <aop:pointcut expression="execution(* cn.xst.dao.impl.*.*(..))" id="pointcut" /> <aop:advisor advice-ref="txadvice" pointcut-ref="pointcut" /> </aop:config> <!-- 配置mybatis的SqlSessionFactory --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"></property> <!-- mybatis的全局配置文件 --> <property name="configLocation" value="classpath:mybatis.cfg.xml"></property> </bean> <!-- dao里面需要注入sqlSessionFactory(这里采用的是接口的实现类来继承SqlSessionDaoSupport) --> <bean id="userDao" class="cn.xst.dao.impl.UserDaoImpl"> <property name="sqlSessionFactory" ref="sqlSessionFactory"></property> </bean> </beans>
接口的实现类继承SqlSessionDaoSupport不用需要在spring的IOC容器里面配置sqlSessionTemplate代码简介很多！
