mybatis批量插入和批量更新

在工作中遇到这一块，也是百度解决了烦恼。在此整理了一下。

/**
 * <p>
 * 数据展示内容配置明细 Mapper 接口
 * </p>
 *
 * @author dsh123
 * @since 2018-05-23
 */
public interface AdminDataContentDetailMapper extends BaseMapper<AdminDataContentDetail> {
    public void insertBatch(@Param(value="contentDetail") List<AdminDataContentDetail> contentDetail);

    void updateListByScan(@Param(value="contentDetail") List<AdminDataContentDetail> contentDetail);

}

mapper层里注释要注意一下。

mapper.xml:批量插入

    <insert id="insertBatch"  parameterType="java.util.List"  >

        INSERT INTO admin_data_content_detail(
            id,
            datasource_id,
            content_id,
            column_name,
            column_type,
            create_by,
            create_date,
            update_by,
            update_date,
            remarks,
            del_flag
        ) VALUES
        <foreach collection="contentDetail" item="content" index="index" separator=",">
                       (
            #{content.id},
            #{content.datasourceId},
            #{content.contentId},
            #{content.columnName},
            #{content.columnType},
            #{content.createBy},
            #{content.createDate},
            #{content.updateBy},
            #{content.updateDate},
            #{content.remarks},
            #{content.delFlag}
        )

        </foreach>
    </insert>

mapper.xml:批量更新

 1      <update id="updateListByScan" parameterType="java.util.List">
 2          update admin_data_content
 3     <trim prefix="set" suffixOverrides=",">
 4
 5         <trim prefix="id =case" suffix="end,">
 6             <foreach collection="contentDetail" item="content">
 7                 <if test="content.id!=null">
 8                      when id = #{content.id} then #{content.id}
 9                 </if>
10             </foreach>
11         </trim>
12         <trim prefix="data_source_id =case" suffix="end,">
13             <foreach collection="contentDetail" item="content">
14                 <if test="content.datasourceId!=null">
15                      when id = #{content.id} then  #{content.datasourceId}
16                 </if>
17             </foreach>
18         </trim>
19         <trim prefix="create_by =case" suffix="end,">
20             <foreach collection="contentDetail" item="content">
21                 <if test="content.createBy!=null">
22                       when id = #{content.id} then  #{content.createBy}
23                 </if>
24             </foreach>
25         </trim>
26         <trim prefix="create_date =case" suffix="end,">
27            <foreach collection="contentDetail" item="content">
28                 <if test="content.createDate!=null">
29                      when id = #{content.id}  then #{content.createDate}
30                 </if>
31             </foreach>
32         </trim>
33          <trim prefix="update_by =case" suffix="end,">
34            <foreach collection="contentDetail" item="content">
35                 <if test="content.updateBy!=null">
36                     when id = #{content.id}  then #{content.updateBy}
37                 </if>
38             </foreach>
39         </trim>
40          <trim prefix="update_date =case" suffix="end,">
41            <foreach collection="contentDetail" item="content">
42                 <if test="content.updateDate!=null">
43                      when id = #{content.id}  then #{content.updateDate}
44                 </if>
45             </foreach>
46         </trim>
47          <trim prefix="remarks =case" suffix="end,">
48            <foreach collection="contentDetail" item="content">
49                 <if test="content.remarks!=null">
50                     when id = #{content.id} then #{content.remarks}
51                 </if>
52             </foreach>
53         </trim>
54     </trim>
55     <where>
56         <foreach collection="contentDetail" separator="or" item="content">
57             id = #{content.id}
58         </foreach>
59     </where>
60     </update>  

批量更新的时候本意是采用插入的那种xml写法，结果报错问题没解决采用了这种写法。由于整理的时间间隔太长，记忆模糊了。汗。这也提醒我要及时总结

满足150字。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。

原文地址：https://www.cnblogs.com/dsh2018/p/9290095.html