sqlMapConfig约束

<?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>


<environments default="mysql">
<environment id="mysql">
<transactionManager type="JDBC"/>
<dataSource type="POOLED">
<property name="driver" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql:///ssm"/>
<property name="username" value="root"/>
<property name="password" value="root"/>
</dataSource>
</environment>
</environments>
<!-- 使用的是注解 -->
<mappers>
<!-- <mapper class="cn.itcast.dao.AccountDao"/> -->
<!-- 该包下所有的dao接口都可以使用 -->
<package name="cn.itcast.dao"/>
</mappers>


</configuration>