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>
    <properties resource="db.properties"></properties>

    <plugins>
        <plugin interceptor="com.mybatis.test.MyBatisLog"></plugin>
    </plugins>

    <environments default="development">
        <environment id="development"><!--环境-->
            <transactionManager type="JDBC"/><!--事务管理器-->
            <dataSource type="POOLED"><!--数据源-->
                <property name="driver" value="${mysql.driver}"/>
                <property name="url" value="${mysql.url}"/>
                <property name="username" value="${mysql.username}"/>
                <property name="password" value="${mysql.password}"/>
            </dataSource>
        </environment>
    </environments>
</configuration>