mybatis-config.xml映射文件

<?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>

    <!-- 加载的关于数据库的配置信息 -->

    <properties resource="jdbc.properties"/>

    <environments default="development">

        <environment id="development">

            <!-- ACID -->

            <transactionManager type="JDBC" />

            <dataSource type="POOLED">

                <property name="driver" value="${jdbc.driver}" />

                <property name="url" value="${jdbc.url}" />

                <property name="username" value="${jdbc.username}" />

                <property name="password" value="${jdbc.password}" />

            </dataSource>

        </environment>

    </environments>

    <mappers>

 <!-- 映射你的xxxxMapper.xml文件 -->

<mapper resource="com/../*Mapper.xml"/>
 </mappers> 
</configuration>

jdbc.properties属性文件

jdbc.driver=com.mysql.jdbc.Driver

#修改这里的端口号/数据库/

jdbc.url=jdbc:mysql://127.0.0.1:3306/这里是你的数据库名称?useUnicode=true&characterEncoding=UTF-8

jdbc.username=root

#修改密码

jdbc.password=root