java mybatis核心配置

mybatis核心配置，在resources中添加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">
<!--  核心配置文件  -->
<configuration>
    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC"/>
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver"/>
                <!--分别是数据库的jdbc:mysql://ip:port/数据库-->
                <property name="url"
                          value="jdbc:mysql://localhost:3306/mybatis"/>
                <!--账号密码-->
                <property name="username" value="root"/>
                <property name="password" value="mysql"/>
            </dataSource>
        </environment>
    </environments>
    <!--  每一个mapper.xml都需要  -->
    <mappers>
        <mapper resource="com/pipi/dao/UserMapper.xml"/>
        <!--  <mapper resource="com.pipi.dao.UserMapper.xml"/>  // 错误 特别注意，我自己就踩来了这个坑-->
    </mappers>
</configuration>