mybitis.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>
<!-- 读取配置文件 -->
<properties resource="jdbc.properties"></properties>
<!-- 配置链接数据库的环境 -->
<environments default="mysql">
<environment id="mysql">
<!-- 按照jdbc 的方式进行事务的提交和回滚 -->
<transactionManager type="JDBC" />
<!-- POOLED 使用数据库连接池 -->
<dataSource type="POOLED">
<property name="driver" value="${jdbc.driver}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.loginName}" />
<property name="password" value="${jdbc.pwd}" />
</dataSource>
</environment>
</environments>
<!-- 导入mapper文件 -->
<mappers>
<mapper resource="com/lanou/mapper/RoleMapper.xml" />
</mappers>
</configuration>
jdbc.properties
# dataSource key=value
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/shop
jdbc.loginName=root
jdbc.pwd=root
roleMapper.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" >
<!-- namespace 映射的接口 -->
<mapper namespace="com.lanou.mapper.RoleMapper">
<!-- 实体和表的映射 type映射的实体类-->
<resultMap type="com.lanou.entity.Role" id="roleMapper" >
<!-- id 主键列 -->
<id column="id" property="id" javaType="java.lang.Integer"/>
<!-- 非主键列 -->
<result column="roleCode" property="roleCode" javaType="java.lang.String"/>
<result column="roleName" property="roleName" javaType="java.lang.String"/>
<result column="createdBy" property="createdBy" javaType="java.lang.Integer"/>
<result column="creationDate" property="creationDate" javaType="java.util.Date"/>
<result column="modifyBy" property="modifyBy" javaType="java.lang.Integer"/>
<result column="modifyDate" property="modifyDate" javaType="java.util.Date"/>
</resultMap>
<!-- 查询
resultMap 结果集
-->
<select id="selectAll" resultMap="roleMapper">
select * from smbms_role
</select>
</mapper>