原文地址:https://www.cnblogs.com/chen-yun/p/9274734.html
1.因爲在向動態表中插入數據後,要返回主鍵id,所以我建了實體類。(若是不需要返回主鍵,則不需要建實體類)
xml代碼
<insert id="insertInfo" parameterType="com.entity.InsertMap" useGeneratedKeys="true" keyProperty="id">
insert ignore into ${tableName}
<foreach collection="params.keys" item="key" open="(" close=")" separator="," >
${key}
</foreach>
values
<foreach collection="params.keys" item="key" open="(" close=")" separator=",">
#{params.${key}}
</foreach>
</insert>
①若是不需要返回插入數據的主鍵id,則 parameterType="java.util.Map"即可,無需建實體類
②需要返回主鍵id的,實體類如下
2.向動態表名,動態屬性表中更新數據
<update id="updateInfoByID" parameterType="java.util.Map">
UPDATE ${tableName} set
<foreach item="value" index="key" collection="params" separator=",">
<if test="key != 'id'">
${key} = #{value}
</if>
</foreach>
WHERE
<foreach item="value" index="key" collection="params" separator=",">
<if test="key == 'id'">
ID = #{value}
</if>
</foreach>
</update>