mybatis-config.xml配置文件（不同情况不同映射路径）

<?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>

<mappers>
<mapper resource="dao/StandardMapper.xml"></mapper>
</mappers>
</configuration>