[Java知识库]spring整合mybatis

jdbc.properties文件
jdbc.driver = com.mysql.jdbc.Driver
jdbc.url = jdbc:mysql:///ssmtest
jdbc.username = root
jdbc.password = 123456

applicationContext-service.xml文件

```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:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="
sqlMapConfig.xml
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd">

    <!--spring整合mybatis-->
    <context:property-placeholder location="classpath:jdbc.properties"></context:property-placeholder>

    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="${jdbc.driver}"></property>
        <property name="url" value="${jdbc.url}"></property>
        <property name="username" value="${jdbc.username}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>

    <!--sqlSessionFactory的创建权交给了spring 生产sqlSession-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <property name="typeAliasesPackage" value="com.lagou.domain"></property>
        
        <!--引入加载mybatis的核心配置文件-->
        <property name="configLocation" value="classpath:SqlMapConfig.xml"></property>
    </bean>

    <!--mapper映射扫描 MapperScannerConfigurer扫描该包下所有接口，生成代理对象存到IOC容
器中-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.lagou.dao"></property>
    </bean>
</beans>

SqlMapConfig.xml文件

<?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>
    <settings>
        <!-- 是否开启自动驼峰命名规则（camel case）映射，即从数据库列名 A_COLUMN 到属性名
        aColumn 的类似映射 a_name aName-->
        <setting name="mapUnderscoreToCamelCase" value="true"/>
    </settings>
</configuration>