http://www.cnblogs.com/lmei/p/7102506.html

http://www.cnblogs.com/lmei/p/7102506.html

（2）在conf.xml文件中引用properties文件，修改conf.xml如下：原文不全

<?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>      
     <!-- 引用db.properties配置文件 -->
    <properties resource="db.properties"/>


    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC" />
            <!-- 配置数据库连接信息 -->
            <dataSource type="POOLED">
                <!-- value属性值引用db.properties配置文件中配置的值 -->
                <property name="driver" value="${driver}" />
                <property name="url" value="${url}" />
                <property name="username" value="${name}" />
                <property name="password" value="${password}" />
            </dataSource>
        </environment>
    </environments>


    
      <mappers>
        <!-- 注册userMapper.xml文件(基于xml实现)--> 
        <mapper resource="mapper/UserMapper.xml"/>
        <!-- 注册UserMapper映射接口（基于注解实现）-->
        <mapper class="mapper.UserMapperI"/>
    </mappers>


</configuration>