1.引入jar包
2.编写db.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mybatis?serverTimezone=UTC
jdbc.username=root
jdbc.password=123456
jdbc.maxTotal=30
jdbc.maxIdle=10
jdbc.initialSize=5
3.编写spring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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.3.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.3.xsd">
<!--读取db.properties -->
<context:property-placeholder location="classpath:db.properties"/>
<!-- 配置数据源 -->
<bean id="dataSource"
class="org.apache.commons.dbcp2.BasicDataSource">
<!--数据库驱动 -->
<property name="driverClassName" value="${jdbc.driver}" />
<!--连接数据库的url -->
<property name="url" value="${jdbc.url}" />
<!--连接数据库的用户名 -->
<property name="username" value="${jdbc.username}" />
<!--连接数据库的密码 -->
<property name="password" value="${jdbc.password}" />
<!--最大连接数 -->
<property name="maxTotal" value="${jdbc.maxTotal}" />
<!--最大空闲连接 -->
<property name="maxIdle" value="${jdbc.maxIdle}" />
<!--初始化连接数 -->
<property name="initialSize" value="${jdbc.initialSize}" />
</bean>
<!-- 事务管理器，依赖于数据源 -->
<bean id="transactionManager" class=
"org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<!--开启事务注解 -->
<tx:annotation-driven transaction-manager="transactionManager"/>
<!--配置MyBatis工厂 -->
<bean id="sqlSessionFactory"
class="org.mybatis.spring.SqlSessionFactoryBean">
<!--注入数据源 -->
<property name="dataSource" ref="dataSource" />
<!--指定核心配置文件位置 -->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean>
<!--实例化Dao -->
<bean id="customerDao" class="com.itheima.dao.impl.CustomerDaoImpl">
<!-- 注入SqlSessionFactory对象实例-->
<property name="sqlSessionFactory" ref="sqlSessionFactory" />
</bean>
<!-- Mapper代理开发（基于MapperFactoryBean） -->
<!-- <bean id="customerMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
<property name="mapperInterface" value="com.itheima.mapper.CustomerMapper" />
<property name="sqlSessionFactory" ref="sqlSessionFactory" />
</bean> -->
<!-- Mapper代理开发（基于MapperScannerConfigurer） -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.itheima.mapper" />
</bean>
<!-- 开启扫描 -->
<context:component-scan base-package="com.itheima.service" />
</beans>
4.编写mybatis配置配件mybatis-config.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<!--配置别名 -->
<typeAliases>
<package name="com.itheima.po" />
</typeAliases>
<!--配置Mapper的位置 -->
<mappers>
<mapper resource="com/itheima/po/CustomerMapper.xml" />
<!-- Mapper接口开发方式 -->
<mapper resource="com/itheima/mapper/CustomerMapper.xml" /
</mappers>
</configuration>
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