StaffDao.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.giit.www.college.dao.StaffDao">

    <resultMap id="staff_map" type="Staff">
        <result property="staffId" column="staff_id"/>
        <result property="staffName" column="staff_name"/>
    </resultMap>

    <select id="findAllName" resultType="String">
        SELECT staff_name FROM staff
    </select>

    <select id="findAll" resultMap="staff_map">
        SELECT * FROM staff
    </select>

    <select id="findIdByName" resultType="String">
        SELECT staff_id FROM staff WHERE staff_id = #{value}
    </select>

    <update id="update" parameterType="map">
        UPDATE staff SET spec_name = #{newSpecName} WHERE spec_name = #{specName}
    </update>

    <insert id="add" parameterType="Staff">
        INSERT INTO staff(staff_id,staff_name) VALUES(#{staffId},#{staffName})
    </insert>

    <delete id="delete" parameterType="String">
        DELETE FROM staff WHERE staff_id = #{value}
    </delete>
</mapper>