//根據條件查詢 查詢語句條件引數一定要判空，判斷null空和字串空 不判空會出現奇怪的問題，查出來的不是根據條件查到的結果


 <select id="list" resultMap="typeResultMap" >
        select * from type
        <where>
            <!--id-->
            <if test="id!=null and id!=''">
                and id like '%${id}%'
            </if>
            <!--ISBN-->
            <if
 
 test="name!=null and name!=''">
                and name like '%${name}%'
            </if>
            <!--書名-->
            <if test="remake!=null and remake!=''">
                and remake like '%${remake}%'
            </if>
        </where>

    </select>

<select 
 
id="list" resultMap="typeResultMap" >
select * from type
<where>
<!--id-->
<if test="id!=null and id!=''">
and id like '%${id}%'
</if>
<!--ISBN-->
<if test="name!=null and name!=''">
and name like '%${name}%'
</if>
<!--書名-->
<if test="remake!=null and remake!=''"
 
>
and remake like '%${remake}%'
</if>
</where>

</select>