MyEclipse xml 手动添加 dtd

<?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>