VIP23/SSM/target/classes/mapper/BookMapper.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.sf.mapper.BookMapper">

<!--    图书的添加-->
    <insert id="addBook" parameterType="book">
        insert into book(book_id,book_name,author_name,price) values (#{bookId},#{bookName},#{authorName},#{price})
    </insert>

    <update id="updateBook" parameterType="book">
        update book set
        <if test="bookName != null">book_name = #{bookName},</if>
        <if test="authorName != null">author_name = #{authorName},</if>
        <if test="price != null">price = #{price}</if>
    where book_id = #{bookId}
    </update>

    <delete id="deleteBook" parameterType="int">
        delete from book where book_id = #{bookId}
    </delete>

    <select id="getBookByBookId" parameterType="int" resultType="book">
        select * from book where book_id = #{bookId}
    </select>

    <select id="getList" resultType="book">
        select * from book
    </select>

    <select id="getBookWithLike" resultType="book" parameterType="string">
        select * from book where book_name like concat('%',#{bookName},'%');
    </select>

</mapper>