MyEclipse xml 手动添加 dtd详解数据库

<?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">  
<mapper namespace="com.mycom.mybatis_1.test1.userMapper">  
    <!-- 根据id查询，得到一个user对象 --> 
    <select id="getUser" parameterType="int"  
        resultType="com.mycom.mybatis_1.test1.User"> 
        select * from users where id=#{id} 
    </select> 
     
</mapper>