hust-epi/whepi-web/src/main/resources/mapper/User.xml

<?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.bofeng.dao.UserMapper">



    <update id="updatePassword">
        update sys_user set
        login_pwd=#{newPassword}
        where
        user_id=#{userId} and login_pwd = #{password}
    </update>

    <select id="checkLoginName" resultType="integer">
select count(*) from sys_user u where u.user_id!=#{userId} and u.login_name=#{loginName}
    </select>
</mapper>