Mybatis

<!--    设置数据库连接环境-->
    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC"/>
            <dataSource type="POOLED">
<!--                mysql8版本-->
<!--                <property name="driver" value="com.mysql.cj.jdbc.Driver"/>-->
<!--                <property name="url" value="jdbc:mysql://localhost:3306/db220106?serverTimezone=UTC"/>-->
<!--                mysql5版本-->
                <property name="driver" value="${db.driver}"/>
                <property name="url" value="${db.url}"/>
                <property name="username" value="${db.username}"/>
                <property name="password" value="${db.password}"/>
            </dataSource>
        </environment>
    </environments>

<!--    设置映射文件路径-->
    <mappers>
        <mapper resource="mapper/EmployeeMapper.xml"/>
        <!-- 要求：接口的包名与映射文件的包名需要一致-->
<!--        <package name="com.atguigu.mybatis.mapper"/>-->
    </mappers>