mybatisde 配置文件

mybatis.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>

<!--    从外面加载指定的配置文件-->
    <properties resource="db.properties"></properties>

    <typeAliases>
<!--        用来给查询返回值的数据类型取别名的-->
        <typeAlias type="com.mybatis.pojo.User" alias="user"></typeAlias>
    </typeAliases>
    <environments default="development">
        <environment id="development">
            <!--            默认使用觉得不错的事务管理方式-->
            <transactionManager type="JDBC"/>
            <!--            pooLED当前使用连接池，如果不适应连接池，填写UNPOOLED-->
            <dataSource type="POOLED">
                <property name="driver" value="${driver}"/>
                <property name="url" value="${url}"/>
                <property name="username" value="${username}"/>
                <property name="password" value="${password}"/>
            </dataSource>
        </environment>
    </environments>


    <mappers>
        <!--    用来扫描sql所在的映射文件的路径-->
<!--        <mapper resource="com/mybatis/mapper/UserMapper.xml"/>-->
        <!--    用来扫描映射文件及被绑定的接口类所在的包-->
        <package name="com.mybatis.mapper"/>
    </mappers>


</configuration>

数据库的连接配置 ：db.properties

driver=com.mysql.jdbc.Driver

url=jdbc:mysql://localhost:3306/mybatisdata?useSSL=false&characterEncoding=utf8
username = root
password= root

映射文件：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="com.mybatis.mapper.Mapper">
   
</mapper>