mybatis 批量更新

摘抄自：https://blog.csdn.net/LQQianLee/article/details/79771618

    

二、批量更新——单条件

1.  
   <update id="update" parameterType="java.util.List">
2.  
   update nt_menu
3.  
   <trim prefix="set" suffixOverrides=",">
4.  
   <trim prefix="breakfast =case" suffix="end,">
5.  
   <foreach collection="list" item="cus">
6.  
   <if test="cus.breakfast != null">
7.  
   when menuId=#{cus.menuId} then #{cus.breakfast}
8.  
   </if>
9.  
   </foreach>
10.  
    </trim>
11.  
    <trim prefix="lunch =case" suffix="end,">
12.  
    <foreach collection="list" item="cus">
13.  
    <if test="cus.lunch != null">
14.  
    when menuId=#{cus.menuId} then #{cus.lunch}
15.  
    </if>
16.  
    </foreach>
17.  
    </trim>
18.  
    <trim prefix="dinner =case" suffix="end,">
19.  
    <foreach collection="list" item="cus">
20.  
    <if test="cus.dinner != null">
21.  
    when menuId=#{cus.menuId} then #{cus.dinner}
22.  
    </if>
23.  
    </foreach>
24.  
    </trim>
25.  
    <trim prefix="modifier =case" suffix="end,">
26.  
    <foreach collection="list" item="cus">
27.  
    <if test="cus.modifier != null">
28.  
    when menuId=#{cus.menuId} then #{cus.modifier}
29.  
    </if>
30.  
    </foreach>
31.  
    </trim>
32.  
    </trim>
33.  
    <where>
34.  
    <foreach collection="list" separator="or" item="cus">
35.  
    menuId=#{cus.menuId}
36.  
    </foreach>
37.  
    </where>
38.  
    </update>

批量更新——多条件